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Background The association between grass pollen exposure and early markers of asthma exacerbations such as lung function changes and increase in airway inflammation is limited. We investigated the associations between short-term grass pollen exposure and lung function and airway inflammation in a community-based sample, and whether any such associations were modified by current asthma, current hay fever, pollen sensitization, age, and other environmental factors. Methods Cross-sectional and short-term analyses of data from the Melbourne Atopy Cohort Study (MACS) participants (n = 936). Lung function was assessed using spirometry. Airway inflammation was assessed by fractional exhaled nitric oxide (FeNO) and exhaled breath condensate pH and nitrogen oxides (NOx). Daily pollen counts were collected using a volumetric spore trap. The associations were examined by linear regression. Results Higher ambient levels of grass pollen 2 days before (lag 2) were associated with lower mid-forced expiratory flow (FEF25%-75%) and FEV1/FVC ratio (Coef. [95% CI] = −119 [−226, −11] mL/s and −1.0 [−3.0, −0.03] %, respectively) and also 3 days before (lag 3). Increased levels of grass pollen a day before (lag 1) were associated with increased FeNO (4.35 [−0.1, 8.7] ppb) and also at lag 2. Adverse associations between pollen and multiple outcomes were greater in adults with current asthma, hay fever, and pollen sensitization. Conclusion Grass pollen exposure was associated with eosinophilic airway inflammation 1-2 days after exposure and airway obstruction 2-3 days after exposure. Adults and individuals with asthma, hay fever, and pollen sensitization may be at higher risk.

Objective: The Australian COVID-19 Frontline Healthcare Workers study examined the prevalence and severity of mental health symptoms during the second wave of the COVID-19 pandemic. This substudy examined the differences in psychological well-being between rural and metropolitan health care workers (HCWs). Design: A nationwide survey conducted between August and October 2020. Setting and Participants: Australian HCWs were recruited through multiple strategies. Main outcome measures: Demographics, mental health outcomes (anxiety, depression, post-traumatic stress disorder [PTSD] and burnout). Results: Complete responses were included from 7846 participants, with 1473 (18.8%) in regional or remote (‘rural’) areas and 81.2% in metropolitan areas. Rural participants were older, more likely to work in allied health, nursing or in health administration, and had worked longer in their profession than metropolitan participants. Levels of resilience were similar (p = 0.132), but there was significantly higher prevalence of pre-COVID-19 pandemic mental illness in the rural workforce (p < 0.001). There were high levels of current mental health issues: moderate–severe PTSD (rural 38.0%; metropolitan 41.0% p = 0.031); high depersonalisation (rural 18.1%; metropolitan 20.7% p = 0.047); and high emotional exhaustion (rural 46.5%; metropolitan 43.3% p = 0.002). Among rural participants, mental health symptoms were associated with younger age, worry about being blamed if they contracted COVID-19, fear of transmitting COVID-19 to their family, experiencing worsening relationships and working in primary care or allied health. Conclusion: Despite having low COVID-19 case numbers in rural Australian health services compared with metropolitan counterparts over the course of 2020, there were widespread mental health impacts on the workforce. Rural health services need specific and flexible training, education, work policies and practices that support psychological well-being now in preparedness for ongoing or future crises.

Background While the relationship between outdoor particulate matter (PM) and lower respiratory tract infections in children and adolescents is accepted, we know little about the impacts of outdoor PM on the risk of developing or aggravating upper respiratory tract infections (URTIs). Methods We aimed to review the literature examining the relationship between outdoor PM exposure and URTIs in children and adolescents. A systematic search of EMBASE, MEDLINE, PubMed, Scopus, CINAHL and Web of Science databases was undertaken on April 3, 2020 and October 27, 2021. Comparable short-term studies of time-series or case-crossover designs were pooled in meta-analyses using random-effects models, while the remainder of studies were combined in a narrative analysis. Quality, risk of bias and level of evidence for health effects were appraised using a combination of emerging frameworks in environmental health. Results Out of 1366 articles identified, 34 were included in the systematic review and 16 of these were included in meta-analyses. Both PM2.5 and PM10 levels were associated with hospital presentations for URTIs (PM2.5: RR = 1.010, 95%CI = 1.007–1.014; PM10: RR = 1.016, 95%CI = 1.011–1.021) in the meta-analyses. Narrative analysis found unequivocally that total suspended particulates were associated with URTIs, but mixed results were found for PM2.5 and PM10 in both younger and older children. Conclusion This study found some evidence of associations between PM and URTIs in children and adolescents, the relationship strength increased with PM10. However, the number of studies was limited and heterogeneity was considerable, thus there is a need for further studies, especially studies assessing long-term exposure and comparing sources.

Background There is preliminary evidence that greenery/greenspace around schools may be positively associated with children's cognitive development and academic outcomes, whereas traffic-related air pollution (TRAP) may have a detrimental effect. Few studies have examined pathways between both exposures and academic outcomes. This study aimed to assess associations between greenery, road traffic density (a proxy for TRAP) surrounding primary (elementary) schools, and academic achievement of primary schoolchildren in Melbourne, Australia. Methods This cross-sectional study examined mean academic scores in Years 3 and 5 for primary schools (n = 851) in Greater Melbourne. Scores were from the 2018 ‘National Assessment Program – Literacy and Numeracy’ (NAPLAN) in five domains: ‘Reading’; ‘Writing’; ‘Spelling’; ‘Grammar & Punctuation’ and ‘Numeracy’. Greenery was measured within school boundaries and surrounding Euclidean buffers (100, 300, 1000 and 2000 m) using the Normalized Difference Vegetation Index (NDVI). Measured TRAP proxies were weighted road density (WRD) within the buffers and distance to a major road. Generalised Linear Models were used to examine associations of greenery and TRAP with academic scores (adjusted for school socio-educational status), and to identify mediating pathways. Results Greenery was positively associated with Reading scores in Year 3 (all buffers except 2000 m) and in Year 5 (all buffers), with Numeracy in Years 3 and 5 (all buffers) and with Grammar & Punctuation in Year 5 (all buffers). WRD was inversely associated with Reading scores in Year 5 (all buffers), with Numeracy in Year 3 (all buffers) and Year 5 (300 and 1000 m buffers), and with Grammar & Punctuation in Year 3 (100 and 300 m buffers) and Year 5 (all buffers). Distance to a major road was not associated with any score. TRAP partially mediated associations of greenery within 300 m with Numeracy in Year 3 and Grammar & Punctuation in Year 5, and within 2000 m for Reading in Year 5. Conclusions Preliminary evidence indicated that greenery around primary schools was positively associated with Reading, Numeracy and Grammar & Punctuation scores, with TRAP mediating some associations. Further research is required to improve TRAP exposure assessment around schools to verify these findings and inform town/school planners and educators regarding optimal school locations and environments for promoting learning.

Translating Neuroscience to education involves providing accurate and simplified information about neuroscience to teachers. The aim of this research was to understand if providing translated abstr...

BACKGROUND: Evolving evidence suggests that vegetation surrounding schools is beneficial to children's academic performance, however vehicle emissions are adversely related. Little is known about concurrent impacts of vegetation and vehicle emissions on academic performance. This study examined associations of vegetation and vehicle emissions near urban Australian primary schools with children's academic performance.METHODS: Vegetation within schoolyards and Euclidean buffers (100, 300 and 1000m) was assessed using the Normalised Difference Vegetation Index (NDVI). Weighted road density (WRD) was computed for each buffer as a vehicle emissions proxy. Cross-sectional associations and mediating pathways between vegetation and vehicle emissions and standardised average academic scores in Literacy (Reading, Writing, Language Conventions) and Mathematics for Grades 3 and 5 attending 3745 primary schools in urban areas (population ≥10,000) of Australia in 2018 were assessed using generalised linear models adjusted for school socio-educational status.RESULTS: Significant positive associations were found between vegetation and Reading in Grades 3 and 5, Mathematics in Grade 3 (all buffers), Writing in Grade 3 (100 and 300m), and Language Conventions in Grades 3 and 5 (most buffers). Increased vehicle emissions were negatively associated with Reading and Mathematics in Grades 3 and 5 (most buffers), and Language Conventions in Grade 3 (300 and 1000m) and Grade 5 (100-1000m). Within 300m, vehicle emissions partially mediated associations between vegetation with Mathematics in Grade 3 (proportion mediated, 21%), Reading and Language Conventions in Grade 5 (15%, 37% respectively).CONCLUSIONS: Our findings contribute to growing evidence that vegetation around primary schools is associated with higher achievement in Literacy and Mathematics, with partial mediation by vehicle emissions. Future studies should conduct on-site measurement of vehicle emissions and audit vegetation around schools to confirm findings and inform urban/school planners and school leaders on designing and modifying school environments to support learning.

Parental preconception exposures to built and natural outdoor environments could influence pregnancy and birth outcomes either directly, or via a range of health-related behaviours and conditions. However, there is no existing review summarising the evidence linking natural and built characteristics, such as air and noise pollution, walkability, greenness with pregnancy and birth outcomes. Therefore, the planned scoping review aims to collate and map the published literature on parental preconception exposures to built and natural outdoor environments and adverse pregnancy and birth outcomes. We will search electronic databases (MEDLINE, EMBASE, Scopus) to identify studies for inclusion. Studies will be included if they empirically assess the relationship between maternal and paternal preconception exposures to physical natural and built environment features that occur outdoors in the residential neighbourhood and adverse pregnancy and birth outcomes. Two reviewers will independently screen titles and abstracts, and then the full text. Data extraction and assessment of study quality will be performed by one researcher and checked by a second researcher. Results will be summarised in a narrative synthesis, with additional summaries presented as tables and figures. The scoping review will be disseminated via a peer-reviewed publication, at academic conferences, and published on a website.

Traffic-related air pollution is ubiquitous and almost impossible to avoid. It is important to understand the role that traffic-related air pollution may play in neurodegenerative diseases, such as dementia, Alzheimer’s disease, and Parkinson’s disease, particularly among older populations and at-risk groups. There is a growing interest in this area among the environmental epidemiology literature and the body of evidence identifying this role is emerging and strengthening. This review focuses on the principal components of traffic-related air pollutants (particulate matter and nitrogen oxides) and the epidemiological evidence of their contribution to common neurodegenerative diseases. All studies reported are currently observational in nature and there are mixed findings depending on the study design, assessment of traffic-related air pollutant levels, assessment of the neurodegenerative disease outcome, time period of assessment, and the role of confounding environmental factors and at-risk genetic characteristics. All current studies have been conducted in income-rich countries where traffic-related air pollution levels are relatively low. Additional longer-term studies are needed to confirm the levels of risk, consider other contributing environmental factors and to be conducted in settings where air pollution exposures are higher and at-risk populations reside and work. Better understanding of these relationships will help inform the development of preventive measures and reduce chronic cognitive and physical health burdens (cost, quality of life) at personal and societal levels.

Traffic-related air pollution is ubiquitous and almost impossible to avoid. It is important to understand the role that traffic-related air pollution may play in neurodegenerative diseases, such as dementia, Alzheimer’s disease, and Parkinson’s disease, particularly among older populations and at-risk groups. There is a growing interest in this area among the environmental epidemiology literature and the body of evidence identifying this role is emerging and strengthening. This review focuses on the principal components of traffic-related air pollutants (particulate matter and nitrogen oxides) and the epidemiological evidence of their contribution to common neurodegenerative diseases. All studies reported are currently observational in nature and there are mixed findings depending on the study design, assessment of traffic-related air pollutant levels, assessment of the neurodegenerative disease outcome, time period of assessment, and the role of confounding environmental factors and at-risk genetic characteristics. All current studies have been conducted in income-rich countries where traffic-related air pollution levels are relatively low. Additional longer-term studies are needed to confirm the levels of risk, consider other contributing environmental factors and to be conducted in settings where air pollution exposures are higher and at-risk populations reside and work. Better understanding of these relationships will help inform the development of preventive measures and reduce chronic cognitive and physical health burdens (cost, quality of life) at personal and societal levels.

Environmental correlates, barriers, and facilitators of physical activity, healthy eating, and socializing are understudied in older immigrants to developed countries. This study developed/adapted and validated measures of perceived barriers and neighborhood environmental characteristics related to these health-enhancing behaviors appropriate for older Chinese immigrants to Australia and similar Western countries. Older Chinese immigrants living in Melbourne (Australia) were recruited from neighborhoods varying in walkability and percentage of Chinese residents. Versions of the Neighborhood Environment for Healthy Aging–Chinese Immigrants to Australia (NEHA-CIA) questionnaire (20 subscales) and the Perceived Barriers to Health-Enhancing Behaviors questionnaire (four subscales) were developed from extant validated scales and information collected in formative qualitative research. Thirty-one participants took part in cognitive interviews aimed to pilot-test and refine the questionnaires. The modified questionnaires were administered to 52 participants twice, two weeks apart. Test-retest reliability (intraclass correlation coefficients), internal consistency (Cronbach’s α), and construct validity (associations with theoretically-relevant constructs) were examined. Most items and subscales of both questionnaires had good test-retest reliability and internal consistency, while the NEHA-CIA also showed good construct validity. Future studies need to further examine the construct validity of the questionnaire of perceived barriers and determine the factorial validity of both measures on large representative samples.

The unprecedented COVID-19 pandemic has indelibly impacted routine healthcare provision across the globe. Nevertheless, management of traumatic injuries has remained a priority patient care service of oral and maxillofacial (OMF) practice. This study aimed to explore the pattern and mechanisms of OMF injuries presenting at a major public dental hospital during a COVID-19 lockdown period in Sri Lanka. An enhanced OMF injury surveillance system was established at the National Dental Hospital (Teaching) Sri Lanka (NDHTSL) on 1 March 2020. OMF injury surveillance data from 1 March 2020 to 31 May 2020 were collated from the &ldquo, enhanced injury surveillance form&rdquo, This period overlapped with the strictly imposed island-wide COVID-19 community lockdown. Pre-COVID-19 period (November 2017 to January 2020) OMF injury data were compared with this period. OMF injuries were categorized as hard tissue, extra-oral or intra-oral soft tissue, upper and middle face fractures and mandibular fractures. Data were analyzed with descriptive statistics, Fisher&rsquo, s exact and Chi-square tests of significance. A total of 361 OMF injuries were identified among 208 patients who were predominantly males (71.6%), mean age was 24.95 &plusmn, 2.76 years. Injuries to gingivae and oral mucosa (26.9%) were the leading type, followed by extra-oral soft tissues (22.1%), periodontal injuries (20.7%) and hard tissue injuries (20.2%). Upper face and mandibular fractures accounted for 2.9% and 1.9%, respectively. Most patients sustained their injuries due to falls at their homes and surrounds. This was significantly increased compared to the pre-COVID-19 period (p = 0.0001). The significant increase in OMF injuries associated with falls around the home during the COVID-19 lockdown scenario in Sri Lanka compared to the pre-COVID-19 period may need further investigation in order to understand the how these injuries may be prevented.

Background: The transformation of the global energy sector from fossil-based fuels to low/non-carbon fuels will reduce environmental pollutant load, which in turn will benefit human health. However, with upscaling of emerging renewable technologies and energy sources, it is important to identify the potential for unintended health impacts, and to understand where the knowledge gaps lie with respect to health. We aimed to identify these gaps by conducting a scoping review. Methods: We conducted a systematic search of Medline, Web of Science, PubMed and EMBASE. We used broad search terms to capture literature associated with energy transitioning to low/non-carbon energy sources or related technologies, combined with terms relevant to measuring or estimating health outcomes/impacts associated with environmental exposures. We included original epidemiological studies, reviews, health impact assessments (HIAs), life cycle assessments (LCAs), and modelling studies that examined health impacts. Results: The search identified 6933 papers of which 81 original research and review papers were included in the review. The majority of studies were based on modelling scenarios. There were few papers reporting empirical epidemiological studies, either observational or interventional. The principal foci of the studies were: alternative energy scenario modelling; biofuels; wind energy; photovoltaic cells; transport; and building energy efficiency. Within those studies the depth and breadth of the health impact research was limited. Conclusions: There is a need to determine the potential for unintended health impacts that may arise from each energy transition scenario, as an adjunct to consideration of environmental and social impacts. Conducting LCAs or HIAs associated with current and emerging transitions, technologies, energy interventions, and policy decisions are likely to be the best methods, currently, for determining the potential for health impacts. Such research needs to be multidisciplinary and iterative to keep abreast of developments in new energy technologies, modelling methods and policy shifts in energy transitions.

Article is free to read on publisher website Abstract Background In the context of increased asthma exacerbations associated with climatic changes such as thunderstorm asthma, interest in establishing the link between pollen exposure and asthma hospital admissions has intensified. Here, we systematically reviewed and performed a meta‐analysis of studies on pollen and emergency department (ED) attendance. Methods A search for studies with appropriate search strategy in MEDLINE, EMBASE, Web of Science and CINAHL was conducted. Each study was assessed for quality and risk of bias. The available evidence was summarized both qualitatively and meta‐analysed using random‐effects models when moderate heterogeneity was observed. Results Fourteen studies were included. The pollen taxa investigated differed between studies, allowing meta‐analysis only of the effect of grass pollen. A statistically significant increase in the percentage change in the mean number of asthma ED presentations (MPC) (pooled results from 3 studies) was observed for an increase in 10 grass pollen grains per cubic metre of exposure 1.88% (95% CI = 0.94%, 2.82%). Time series studies showed positive correlations between pollen concentrations and ED presentations. Age‐stratified studies found strongest associations in children aged 5‐17 years old. Conclusion Exposure to ambient grass pollen is an important trigger for childhood asthma exacerbations requiring ED attendance. As pollen exposure is increasingly a problem especially in relation to thunderstorm asthma, studies with uniform measures of pollen and similar analytical methods are necessary to fully understand its impact on human health.

Background: Outdoor air pollution and childhood asthma are increasing problems in South Asian countries. However, little is known about the associations between levels of air pollution and severe childhood asthma requiring hospital treatment in these regions. Methods: We undertook a systematic review to assess the evidence between outdoor air pollution exposure and childhood and adolescent asthma hospitalization in South Asia. MEDLINE, Web of Science, Google Scholar, CINAHL, Embase, Scopus, ProQuest Central databases were searched for peer-reviewed papers, and examination of reference lists was conducted for additional studies. We identified all the literature published in English up to January 2021 for the study population comprised of children aged less than 19 years. The search strategy was designed to identify all the studies and screen them as per the inclusion criteria. The method of qualitative synthesis using the standard tool determined the comprehensiveness of the assessment of bias. Results: Of the original 367 studies screened three studies were ultimately included from India, Pakistan and Sri Lanka and a narrative synthesis was conducted. Although studies reported adverse effects of outdoor pollution on asthma hospitalizations, limitations in exposure assessments, varying definitions of asthma hospitalizations and limited data analysis were identified. Conclusions: There is currently limited evidence that can provide meaningful risk estimates of the impact of outdoor air pollution on asthma hospitalizations during childhood and adolescence. Studies with comparable outcome definitions, appropriate exposure assessments and study designs are needed to inform future public and environmental health policy. PROSPERO registration: CRD42020156714 (28/04/2020)

Background Elevated cord blood IgE is important on the pathway to allergic disease. The association between season of birth and infant cord blood IgE is not well-established. Study findings differ on which birth season is associated with higher cord blood IgE risk and its magnitude. We conducted a systematic review and meta-analysis of studies on season of birth and cord blood IgE. Methods We searched Medline, Web of Science, Scopus and ProQuest Health databases, and reviewed reference lists of articles that met the inclusion criteria. All included studies measured IgE as a binary variable using various cut-off values. We performed multivariate-random-effects meta-analysis to handle an exposure with multiple categories of Season of Birth. Results Our search identified 275 records and 10 had sufficient data to be included in a meta-analysis. Relative to summer, winter birth had the greatest odds of high IgE (≥ 0.1 IU/ml), meta-analysis OR = 1.24 (95%CI: 1.01–1.52). A similar OR, was found for IgE ≥ 0.5 IU/ml, OR = 1.30 (95%CI: 0.99–1.71). Conclusions A winter season of birth was associated with statistically significant higher odds of elevated cord blood IgE at cut-off ≥ 0.1 IU/ml but borderline at cut-off ≥ 0.5 IU/ml. This winter effect is likely to be a marker for a range of other environmental exposures during specific stages of pregnancy, such as aeroallergen exposures, maternal infections and vitamin D levels. Further research is required to support our finding and to identify the exact mechanisms that lead to the winter season of birth effect on circulating IgE levels, as this may have implications for allergic disease prevention.

Background: Studies on air pollution and depression in the elderly are limited and the results are heterogeneous. Objectives: We examined the association of ambient air pollution exposure and diagnosis and symptoms of depression in the elderly; and whether any associations were confounded or modified by cognitive decline. Methods: We enrolled 821 elderly women from the German SALIA cohort (follow-up examination, 2007–2010). Self-reported depressive symptoms and level of cognition were evaluated using the CESD-R Scale and the CERAD-Plus test, respectively. We used two depression endpoints for analyses: self-reported doctor diagnosis of depression and frequency of depressive symptoms (CESD-R score). Long-term concentrations of particulate matter (PM) size fractions and nitrogen oxides (NOx) modeled by land-use regression were assigned to home addresses. Cross-sectional associations were assessed using adjusted logistic and linear regression models. Results: Concentrations of coarse particles (PMcoarse), fine particles (PM2.5 and PM2.5 abs) and NO2 were significantly associated with diagnosis of depression (e.g. for PM2.5 OR = 1.62, 95%CI: 1.06, 2.46 and for NO2 OR = 1.54, 95% CI: 1.08, 2.19). Similarly, an increase of one interquartile range in PM10, PM2.5, NO2 and NOx was associated with depressive symptoms assessed with the CESD-R score (e.g. for PM2.5 16.2% difference in the mean; 95% CI: 5.8%, 26.5% and for NO2 14.5%; 95% CI: 4.8%, 24.2%). These associations were stronger in women with cognitive decline (e.g. Pint for PM2.5:0.022 and NO2:0.017) compared to women with normal cognition. In addition, living less than 100 m distance to major roads was significantly associated with diagnosis (OR = 1.99, 95% CI: 1.14, 3.47) and symptoms (19.7%; 95% CI: 4.3%, 35.1%) of depression. We did not observe any interaction effect of cognition on prior diagnosis of depression. Conclusions: Exposure to air pollution was associated with diagnosis of depression and depressive symptoms in elderly women. Women with impaired cognition may be at greater risk of depressive symptoms when exposed to air pollution. Keywords: Aging, Air pollution, Cognition, Depressive symptoms, Elderly, Mental health

Background Asthma-related outcomes are regularly used by studies to investigate the association between human exposure to landscape fire smoke and health. Robust summary effect estimates are required to inform health protection policy for fire smoke exposure. Objective To conduct a systematic review and meta-analysis to estimate the association between short-term exposure to landscape fire smoke (LFS) fine particulate matter (PM2.5) and asthma-related outcomes. Methods We conducted a systematic review and meta-analysis following PRISMA guidelines. Four databases (PubMed, Medline, EMBASE and Scopus) and reference lists of recent fire smoke and health reviews were searched. The Newcastle-Ottawa Scale was used to evaluate the quality of case-crossover studies, and a previously validated quality assessment framework was used for observational studies lacking control groups. Publication bias was assessed using funnel plots and Egger's Test. The trim and fill method was used when there was evidence of publication bias. Sensitivity and influence analyses were conducted on all endpoints to test the robustness of estimates. Summary estimates were obtained for hospitalisations and emergency department (ED) visits. A descriptive analysis was conducted for physician visits, medication use, and salbutamol dispensations. Results From an initial 181 articles (after duplicate removal), 20 studies were included for quantitative assessment and descriptive synthesis. LFS PM2.5 levels were positively associated with asthma hospitalisations (RR = 1.06, 95% CI: 1.02–1.09) and emergency department visits (RR = 1.07, 95% CI: 1.04–1.09). Subgroup analyses found that females were more susceptible than males for ED visits, and that there was an increasing association by age groups for hospital admissions and ED visits. High heterogeneity between studies was observed, but results were robust to sensitivity analysis. Conclusions Females and all adults aged over 65 years appear to be the population groups most sensitive to asthma-related outcomes when exposed to LFS PM2.5. Overall, results were higher than those obtained for a typical PM2.5 mixture.

Background Many outdoor fungal spores are ubiquitous, respirable and possibly allergenic. They may contribute to asthma symptoms; however, little is known about their effects on respiratory function. Objective To investigate if outdoor fungal spore levels were associated with lung function or airway inflammation, and whether fungal sensitization or current asthma modified any associations. Methods Cross-sectional associations between same day (Lag0) and cumulative 3-day lagged (Lag0-3) counts of 12 outdoor fungal spore taxa and pre-bronchodilator spirometry (FEV1, FVC, FEF25%–75%), bronchodilator response (BDR) and airway inflammation (fractional exhaled nitric oxide (FeNO) and exhaled breath condensate (EBC) nitrogen oxides (NOx) and pH were investigated in 936 Melbourne Atopy Cohort Study participants during September 2009 to December 2011. Generalized linear models were used to quantify associations with lung function, FeNO and EBC pH; generalized estimating equations for BDR; and ordinal logistic regression for EBC NOx. Models were adjusted for age, sex, height, temperature, relative humidity, grass pollen and sample storage time. Potential effect modification by fungal sensitization and current asthma were examined using interaction terms. Results Mixed associations were found. Higher levels of Ustilago/smuts were associated with lower lung function at Lag0 (FEV1: 21ml [95%CI -36, −7]; FEF25%–75%: 39ml [-65, −13]) and Lag0-3 (FEV1: 9ml [-14, −4]; FEF25%–75% −18ml [-27, −9]). Positive BDR was associated with Ustilago/smuts (Lag0 OR = 1.1 [1.04, 1.2]; Lag0-3 OR = 1.04 [1.02, 1.07]), Alternaria (Lag0 OR = 1.3 [1.0, 1.6]) and Drechslera (Lag0 OR = 1.1 [1.03, 1.2]). Higher EBC NOx was associated with Cladosporium (Lag0-3 OR = 1.1 [1.0, 1.2]), Alternaria (Lag0-3 OR = 1.1 [1.0, 1.3]). No associations were found with higher FeNO. In those with fungal sensitization, Ustilago/smuts and Drechslera were associated with lower FEV1 and FVC; Cladosporium was associated with increased FEV1, FVC and FEF25%–75% but also with higher FeNO and lower EBC pH. In those with current asthma, Alternaria, Ustilago/smuts and Drechslera were associated with lower FEV1, FVC, FEF25–75% and EBC pH. Conclusion Exposure to outdoor fungal spores may be associated with lower lung function and increased airway inflammation, particularly in those with fungal sensitization and/or current asthma.

IntroductionNumerous studies have found associations between characteristics of urban environments and risk factors for dementia and cognitive decline, such as physical inactivity and obesity. However, the contribution of urban environments to brain and cognitive health has been seldom examined directly. This cohort study investigates the extent to which and how a wide range of characteristics of urban environments influence brain and cognitive health via lifestyle behaviours in mid-aged and older adults in three cities across three continents.Methods and analysisParticipants aged 50–79 years and living in preselected areas stratified by walkability, air pollution and socioeconomic status are being recruited in Melbourne (Australia), Barcelona (Spain) and Hong Kong (China) (n=1800 total; 600 per site). Two assessments taken 24 months apart will capture changes in brain and cognitive health. Cognitive function is gauged with a battery of eight standardised tests. Brain health is assessed using MRI scans in a subset of participants. Information on participants’ visited locations is collected via an interactive web-based mapping application and smartphone geolocation data. Environmental characteristics of visited locations, including the built and natural environments and their by-products (e.g., air pollution), are assessed using geographical information systems, online environmental audits and self-reports. Data on travel and lifestyle behaviours (e.g., physical and social activities) and participants’ characteristics (e.g., sociodemographics) are collected using objective and/or self-report measures.Ethics and disseminationThe study has been approved by the Human Research Ethics Committee of the Australian Catholic University, the Institutional Review Board of the University of Hong Kong and the Parc de Salut Mar Clinical Research Ethics Committee of the Government of Catalonia. Results will be communicated through standard scientific channels. Methods will be made freely available via a study-dedicated website.Trial registration numberACTRN12619000817145.

Background: It is hypothesised that transitioning from traditional fossil fuel use to cleaner energy sources will have significant environmental benefits and health co-benefits related to reduced a...

Aim To synthesise the current evidence for the associations between breastfeeding and dental caries, with respect to specific windows of early childhood caries risk. Methods Systematic review, meta-analyses and narrative synthesis following searches of PubMed, CINAHL and EMBASE databases. Results Sixty-three papers included. Children exposed to longer versus shorter duration of breastfeeding up to age 12 months (more versus less breastfeeding), had a reduced risk of caries (OR 0.50; 95%CI 0.25, 0.99, I2 86.8%). Children breastfed > 12 months had an increased riskof caries when compared with children breastfed < 12 months (seven studies (OR 1.99; 1.35, 2.95, I2 69.3%). Amongst children breastfed > 12 months, those fed nocturnally or more frequently had afurther increased caries risk (five studies, OR 7.14; 3.14, 16.23, I2 77.1%). There was a lack of studies on children aged > 12 months simultaneously assessing caries risk in breastfed, bottle-fed and children not bottle or breastfed, alongside specific breastfeeding practices, consuming sweet drinks and foods, and oral hygiene practices limiting our ability to tease out the risks attributable to each. Conclusion Breastfeeding in infancy may protect against dental caries. Further research needed to understand the increased risk of caries in children breastfed after 12 months

Objective To measure the differences in the recording of risk factors and lifestyle advice between those at high risk of cardiovascular disease and those diagnosed with cardiovascular disease, and to identify the practice characteristics associated with such recording in rural primary care. Design A cross-sectional observation study of 14 general practices. Medical records were audited to measure recording of risk factors and lifestyle advice for those at high risk of and those diagnosed with cardiovascular disease. Practice characteristics were collected, with logistic regression used to test for an association with the recording of risk factors. Setting General practices in rural Australia. Participants Each practice was asked to identify 20 patients; 10 at high risk and 10 diagnosed with cardiovascular disease. Main outcome measures The recording of risk factors and lifestyle advice in patient records and practice characteristics. Results 282 records were audited with 142 being high risk and 140 diagnosed with cardiovascular disease.Measures recorded significantly less in the high-risk group were: blood pressure (94% versus 99%; P = 0.019); physical activity (24% versus 56%; P = 0.000); dietary advice (32% versus 51%; P = 0.001); and physical activity advice (34% versus 56%; P = 0.000). Recording of risk factors was positively associated with practice involvement in quality improvement (P

Background: This study investigated the frequency, patterns and causes of dental trauma in patients seeking emergency treatment at a dental hospital, and evaluated the impact of an electronic structured injury history form to collect key information. Methods: A retrospective audit was undertaken of all emergency presentations at the Royal Dental Hospital of Melbourne from 2009 to 2012. Dental trauma and injury surveillance data were collected and evaluated with reference to the criteria of the Victorian Emergency Minimum Dataset. Statistical analysis included chi‐squared and Fisher's exact tests. Results: A total of 88 610 new emergency courses of care were created, with 3642 (4.1%) identified as new dental trauma cases in 3574 patients. A total of 6001 teeth were injured with a mean of 1.7 teeth per patient (range: 1–8 teeth). The improvement of injury surveillance information collected using the electronic form compared with the paper form was statistically significant (p < 0.001). Conclusions: The dental trauma findings of this study are consistent with other studies regarding age, gender, location, cause and injury type. This study also confirmed the benefits of electronic collection of dental injury surveillance data that can assist policy planners and health service providers in designing and delivering effective dental injury prevention and management services.

Background Pollen is an important aeroallergen that triggers asthma exacerbations in children, but we know little about the impact of different pollen types in cities with varying climatic conditions and pollen seasons. Objectives We aimed to assess the role of ambient level of different types of pollen on a large time series of child and adolescent asthma hospitalizations in Sydney, Australia. Methods Childhood asthma hospitalization and the daily ambient pollen concentrations of different species were collected in South‐West Sydney. With a bidirectional case‐crossover design, we fitted conditional logistic regression models to measure the associations between instantaneous and up to 3 days lagged effects of pollen concentrations on asthma hospitalizations after controlling for potential confounders and testing for interactions. Results A total of 2098 children, more boys (59.7%) and 2‐5 years old (62.6%), were hospitalized due to asthma. The geometric mean concentration of Cupressus, 7.88 [5.02] grains/m3, was the highest during the study period. The increase from 75th to 90th percentile of grass (OR = 1.037, 95% CI 1.005‐1.070), weed other than Plantago species (OR = 1.053, 95% CI 1.009‐1.098) and unclassified pollen (OR = 1.034, 95% CI 1.010‐1.058) were significantly associated with the odds of asthma hospitalizations. Boys were at greater risk of asthma exacerbations associated with grass (OR = 1.046, 95% CI 1.003‐1.090) and unclassified pollen (OR = 1.041, 95% CI 1.010‐1.073). There was evidence of effect modification by age groups for Cupressus, conifer, total tree and total pollen. Conclusions Although boys are more vulnerable to grass pollen, weed, and other pollen are also important triggers of asthma exacerbations in all children and adolescents. These findings are important for urban green space planning and the development of pollen monitoring systems for families with children at risk of asthma exacerbations during peak pollen seasons.

Background Patients with gastrointestinal disease may have comorbid iron deficiency anaemia (IDA) and an increased risk of hospitalisation and re-attendance in hospital. The purpose of this study was to determine if oral and intravenous (IV) treatment of IDA in patients with gastrointestinal disease attending hospital were associated with differential rates of subsequent re-attendance. Methods and findings Data from the Clinical Practice Research Datalink (primary care) and Hospital Treatment Insights (secondary care) databases in England were used to conduct this retrospective cohort study. Patients with a coded gastrointestinal disease and IDA who attended hospital (inpatient or outpatient) and were dispensed oral or IV iron between 01/01/2010-31/10/2013 were included. Elective and emergency re-attendances in secondary care within 30 days of the initial attendance were determined. Demographics, medical diagnoses and treatments were extracted. Re-attendance rates following oral or IV iron were compared using chi-square tests and a step-wise logistic regression model to adjust for confounders. 2,844 patients contributed 6,294 initial attendances; 80% of patients received oral iron, 14% received intravenous iron, and 6% received both. Of initial attendances recording oral iron, 77% resulted in re-attendance in hospital, compared to 34% of those recording IV iron (unadjusted odds ratio [OR]: 0.16; adjusted OR: 0.52 [95% CI: 0.44–0.61]). Initial attendances using IV treatment were more likely to result in elective re-attendance (84%) than those recording oral treatment (43%) (p

Background Some fungal spores can trigger asthma exacerbation but knowledge of which outdoor fungal spores contribute to asthma hospitalisation is limited. Objectives To examine the role of outdoor fungal spores in child and adolescent asthma hospitalisations. Methods We conducted a bi-directional time-stratified case-crossover study of child and adolescent asthma hospitalisations over 5 years. Conditional logistic regression assessed the role of 20 fungi taxa (Same day [L0] and lagged [L1-3]) adjusted for maximum temperature, humidity and grass pollen. Strata specific effects were explored if there was evidence of effect modification by age, sex, air pollutants or grass pollen. Non-linear effects examined with Generalized Additive Models. Results Of 2098 children hospitalised for asthma, 60% were boys; mean age was 5.5±3.7 years. Fungal spore counts peaked during warm months. Regression models found weak associations with Coprinus [L0,L1: OR=1.03, 1.01–1.06], Periconia [L0: OR=1.03, 1.001–1.07] and Chaetomium [L2: OR=1.08, 1.0–1.2]. Sex appeared to act as an effect modifier with girls having stronger associations with Cladosporium , Coprinus and total fungi. Older adolescent (14–18 years) hospitalisation was significantly associated with Coprinus and Ustilago/ smuts. Air pollutants and grass pollen did not appear to act as effect modifiers. Non-linearity was not detected. Conclusion There may be associations between some outdoor fungal spores and asthma hospitalisations. Further research needed to explore whether these findings can be replicated; and examine whether fungal sensitisation and/or human rhinovirus infections are associated with stronger effects. If findings are replicated, then the need to develop predictive models for fungal spore distribution and levels may become more important.

Introduction: Fungal spores can trigger an asthma attack but knowledge of how outdoor fungal spores contribute to severe child asthma is limited. We aimed to examine the contribution of outdoor fun...

doi: 10.1111/j.1741-2358.2012.00652.x Oral healthcare issues in rural residential aged care services in Victoria, Australia Objectives: To identify major issues in providing and accessing oral health care in Victorian rural residential aged care services from the perspectives of dentists, aged care staff and residents. Methods: Structured interviews were conducted with five dentists, nine aged care staff and six residents. Three focus groups were conducted with aged care staff. These data were thematically analysed independently by two researchers. Results: The challenges reported by dentists included complexity of care, infrastructure needs and need for skill development. Aged care staff reported lack of skills and confidence in providing oral hygiene care, especially in residents with natural teeth, and an increasing burden on their daily workload. Residents reported concern and shame regarding their declining oral health status and increased challenges accessing appropriate oral health care. Conclusion: These findings indicate the need to build and sustain aged care ‘oral health teams’ who are able to provide daily oral hygiene care for residents and mentor other staff. Rural dentists need access to gerodontic training, portable equipment and appropriate workspaces in aged care services. Aged care and oral health services need to establish clear referral and communication pathways.

Objective : To develop a conceptual framework for monitoring the relationship between health services and health outcomes in rural Australia. Design and setting : Development of an evaluation framework for a rural comprehensive primary health service in Victoria. Results : Evidence regarding essential components for successful primary health care, and objective health service and health status measures were combined to develop a conceptual health service evaluation framework. Application of the framework is illustrated using a case study of a rural primary health service in Victoria. Conclusions : Inadequate health services limit access to health care, delay use at times of need and result in poor health outcomes. Currently, there is a lack of evidence from rigorous health service evaluations to indicate which rural health services work well, where and why that could inform rural health policies and funding. Although the nature of health service models will vary across communities in order to meet their differing geographic circumstances, there is considerable scope for the translation and generalisation of evidence gained from health service models that are shown to be sustainable, responsive and able to deliver local quality health care. This framework can guide future health service evaluation research and thereby provide a better understanding of a health service’s impact on the health of the community and its residents.

Young children are particularly vulnerable to otitis media (OM) which globally affects over 80% of children below the age of 3 years. Although there is convincing evidence for an association between environmental tobacco smoke exposure and OM in children, the relationship with ambient air pollution is not clear. We aimed to systematically review the literature on the relationship between ambient air pollution exposure and OM in children. A systematic search was performed in PubMed and EMBASE databases. Of 934 references identified, 24 articles were included. There is an increasing body of evidence supporting an association between higher ambient air pollution exposure and a higher risk of OM in children. While NO₂ showed the most consistent association with OM, other specific pollutants showed inconsistent associations. Studies were mainly conducted in high/middle income countries with limited evidence from low-income countries. Although there was a general consensus that higher air pollution exposure is associated with a greater prevalence of OM, the evidence for associations with specific pollutants is inconsistent. More well-designed studies on associations between specific air pollutants as risk factors for OM are warranted, especially in low income countries with high air pollution levels.

Background and objective: Uncontrolled bushfires produce copious amounts of smoke that can result in adverse effects on human health and so are important considerations for emergency, public health and environmental protection agencies. During January to March 2003, the north-east and Alpine regions of the state of Victoria experienced major bushfires that created a blanket of smoke over the entire state for extended periods of time. This study aimed to explore the daily trends in air pollutants and temporal correlations with changes in respiratory outcomes and to determine whether variation in particulate matter

Rural primary care services have the potential to play a major role in reducing the gap in cardiovascular disease (CVD) outcomes between rural and metropolitan Australians, particularly in men at high risk of CVD. The aim of this study was to explore the self-reported behaviours and satisfaction with their general practice/practitioner of men at high risk of CVD, and attitudes of rural primary care clinicians regarding the role of primary care in CVD prevention. This observational research was addressed through survey questionnaires with rural men at high risk of CVD and semi-structured interviews with rural primary care clinicians. Fourteen rural primary care practices from towns with populations less than 25000 participated. One hundred and fifty-eight high-risk men completed the questionnaire. Their responses demonstrated poorly controlled risk factors despite a willingness to change. Alternatively, rural primary care clinicians (n=20) reported that patients were unlikely to change and that illness-based funding models inhibited cardiovascular preventive activities. Australians living in rural areas have worse CVD outcomes. In addition, there is a disparity in the assumptions of health providers and male patients at high risk of CVD in rural areas. This necessitates innovative rural primary care models that include a blended payment system that incentivises or funds preventive care alongside an emphasis on lifestyle advice, as well as an explicit strategy to influence clinician and patient behaviour to help address the disparity.

Aim: To synthesise the evidence on the association between duration and exclusivity of breastfeeding and the risk of acute otitis media (AOM). Methods: Systematic review and meta-analysis following searching of PubMed CINAHL and EMBASE electronic databases. Results: Twenty-four studies all from the USA or Europe met the inclusion criteria. In the pooled analyses any form of breastfeeding was found to be protective for AOM in the first 2 years of life. Exclusive breastfeeding for the first 6 months was associated with the greatest protection (OR 0.57 95% CI 0.44 0.75) followed by ‘more vs less’ breastfeeding (OR 0.67; 0.59 0.76) and ‘ever vs never’ breastfeeding (OR 0.67; 0.56 0.80). Conclusion: This systematic review and meta-analysis provides evidence that breastfeeding protects against AOM until 2 years of age but protection is greater for exclusive breastfeeding and breastfeeding of longer duration. Exclusive breastfeeding during the first 6 months was associated with around a 43% reduction in ever having AOM in the first 2 years of life. After 2 years of age there is no evidence that breastfeeding protects against AOM; however there were few studies and the evidence quality was low. ©2015 The Authors. Open Access.

Objective A cross‐sectional study was conducted involving older adults from social clubs within a regional local government area in the state of Victoria, Australia, to identify factors associated with knowledge, and attitudes about oral health, as well as perceived self‐efficacy. Methods Participants underwent an oral health interview, followed by a comprehensive oral clinical examination. Results A total of 225 older adults participated in this study. The mean age was 70.7 (range: 55–96) years. The majority was females (62.0%) and had incomplete secondary education or less (56.1%); 34.2% were fully edentulous. The mean oral health knowledge score was 24.7 (SD 3.8). None of the socio‐demographic and oral health variables yielded a significant effect on the knowledge score. The attitude score had a mean of 5.0 (SD 1.6). Four variables remained significant in the multivariate analysis [p < 0.0001]. A dentate female, with tertiary education, had better oral health attitudes. Higher oral health knowledge scores were associated with a better attitude. The overall self‐efficacy mean value was 83.1% (SD 10.6). Dental visits and oral health knowledge remained significant in the attitudes multivariate analysis [p < 0.01]. Conclusion Findings indicate that there were some misconceptions in oral health among this group of older adults. These are important influences on the success/failure of an oral health programme. Oral health education is needed to increase older adults' oral health knowledge, in particular of oral cancer, and to some extent periodontal disease, and improves attitudes and oral health self‐efficacy. Oral health knowledge, attitudes and self‐efficacy were minimally explained by socio‐demographic and clinical variables.

Aim: To systematically review the association between breastfeeding and childhood allergic disease. Methods: Predetermined inclusion / exclusion criteria identified 89 articles from PubMed CINAHL and EMBASE databases. Meta-analyses performed for categories of breastfeeding and allergic outcomes. Meta-regression explored heterogeneity. Results: More vs. less breastfeeding (duration) was associated with reduced risk of asthma for children (5-18 years) particularly in medium- / low-income countries and with reduced risk of allergic rhinitis

Background Childhood asthma is a significant public health problem and severe exacerbations can result in diminished quality of life and hospitalization. Objective We sought to examine the contribution of outdoor fungi to childhood and adolescent asthma hospitalizations. Methods The Melbourne Air Pollen Children and Adolescent study is a case-crossover study of 644 children and adolescents (aged 2-17 years) hospitalized for asthma. The Melbourne Air Pollen Children and Adolescent study collected individual data on human rhinovirus infection and sensitization to Alternaria and Cladosporium and daily counts of ambient concentrations of fungal spores, pollen, and air pollutants. Conditional logistic regression models were used to assess associations with increases in spore counts while controlling for potential confounding and testing interactions. Results Exposure to Alternaria (adjusted odds ratio [aOR], 1.07; 95% CI, 1.03-1.11), Leptosphaeria (aOR, 1.05; 95% CI, 1.02-1.07), Coprinus (aOR, 1.04; 95% CI, 1.01-1.07), Drechslera (aOR, 1.03; 95% CI, 1.00-1.05), and total spores (aOR, 1.05; 95% CI, 1.01-1.09) was significantly associated with child asthma hospitalizations independent of human rhinovirus infection. There were significant lagged effects up to 3 days with Alternaria , Leptosphaeria , Cladosporium , Sporormiella , Coprinus , and Drechslera . Some of these associations were significantly greater in participants with Cladosporium sensitization. Conclusions Exposures to several outdoor fungal spore taxa, including some not reported in previous research, are associated with the risk of child and adolescent asthma hospitalization, particularly in individuals sensitized to Cladosporium . We need further studies to examine cross-reactivity causing asthma exacerbations. Identifying sensitization to multiple fungal allergens in children with asthma could support the design and implementation of more effective strategies to prevent asthma exacerbations.

Strong primary healthcare (PHC) services are efficient, cost-effective and associated with better population health outcomes. However, little is known about the role and perspectives of PHC staff in creating a sustainable service. Staff from a single-point-of-entry primary health care service in Elmore, a small rural community in north-west Victoria, were surveyed. Qualitative methods were used to collect data to show how the key factors associated with the evolution of a once-struggling medical service into a successful and sustainable PHC service have influenced staff satisfaction. The success of the service was linked to visionary leadership, teamwork and community involvement while service sustainability was described in terms of inter-professional linkages and the role of the service in contributing to the broader community. These factors were reported to have a positive impact on staff satisfaction. The contribution of service delivery change and ongoing service sustainability to staff satisfaction in this rural setting has implications for planning service change in other primary health care settings. What is known about this topic? Integrated PHC services have an important role to play in achieving equitable population health outcomes. Many rural communities struggle to maintain viable PHC services. Innovative PHC models are needed to ensure equitable access to care and reduce the health differential between rural and metropolitan people. What does this paper add? Multidisciplinary teams, visionary leadership, strong community engagement combined with service partnerships are important factors in the building of a rural PHC service that substantially contributes to enhanced staff satisfaction and service sustainability. What are the implications for practitioners? Understanding and engaging local community members is a key driver in the success of service delivery changes in rural PHC services.

Asthma is a significant global public health issue. Severe asthma exacerbations can be triggered by environmental factors and require medical care from health services. Although it is known that fungal exposure may lead to allergic sensitization, little is understood about its impact on asthma exacerbations. This review aims to examine whether outdoor fungi play a significant role in child asthma exacerbations. Systematic search of seven electronic databases and hand searching for peer-reviewed studies published in English, up to 31 August 2013. Inclusion criteria were study population aged

Background In Australia, rural and regional areas have an increased proportion of older people who are ageing more rapidly than their metropolitan counterparts. This increase in the ageing population and its uneven geographic distribution is likely to pose an oral health challenge in the near future. Methods A cross-sectional study conducted in a sample of 226 community-dwelling adults aged 55 years and older, living in the City of Greater Bendigo who completed a questionnaire and received an oral examination. Results Overall, 51.2% of participants reported having been to the dentist in the previous 12 months. Reported barriers to dental care were: cost of services (32.7%), fear of dentists (25.8%), length of waiting lists (18.1%) and availability of oral health care services (11.1%). Living alone, gender, low income, lack of education, low self-perceived oral health needs, self-perceived barriers, edentulism, and presence of mobility problems were statistically significant variables associated with less use of dental services (p