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Summary: Background: In 2008/9, Fiji vaccinated >30,000 girls aged 9–12 years with the quadrivalent human papillomavirus (4vHPV) vaccine coverage for at least one dose was >60% (one dose only was 14%, two dose only was 13%, three doses was 35%). We calculated vaccine effectiveness (VE) of one, two and three doses of 4vHPV against oncogenic HPV genotypes 16/18, eight years following vaccination. Methods: A retrospective cohort study was undertaken (2015–2019) in pregnant women ≤23 years old, eligible to receive 4vHPV in 2008/9, with confirmed vaccination status. The study was restricted to pregnant women due to the cultural sensitivity of asking about sexual behavior in Fiji. For each participant a clinician collected a questionnaire, vaginal swab and genital warts examination, a median eight (range 6–11) years post vaccination. HPV DNA was detected by molecular methods. Adjusted VE (aVE) against the detection of vaccine HPV genotypes (16/18), the comparison group of non-vaccine genotypes (31/33/35/39/45/51/52/56/58/59/66/68), and genital warts were calculated. Covariates included in the adjusted model were: age, ethnicity and smoking, according to univariate association with any HPV detection. Findings: Among 822 participants the prevalence of HPV 16/18 in the unvaccinated, one, two and three-dose groups were 13.3% (50/376), 2.5% (4/158), 0% (0/99) and 1.6% (3/189), respectively; and for the non-vaccine high-risk genotypes, the detection rate was similar across dosage groups (33.2%–40.4%, p = 0.321). The aVE against HPV 16/18 for one, two and three doses were 81% (95% CI; 48–93%), 100% (95% CI; 100–100%), and 89% (95% CI; 64–96%), respectively. Prevalence of HPV 16/18 was lower among women with longer time since vaccination. Interpretations: A single dose 4vHPV vaccine is highly effective against HPV genotypes 16 and 18 eight years following vaccination. Our results provide the longest duration of protection for reduced dose 4vHPV schedule in a low- or middle-income country in the Western Pacific region. Funding: This study was supported by the Bill & Melinda Gates Foundation and the Department of Foreign Affairs and Trade of the Australian Government and Fiji Health Sector Support Program (FHSSP). FHSSP is implemented by Abt JTA on behalf of the Australian Government.

Summary: Background: In October, 2012, Fiji introduced routine infant immunisation with a ten-valent pneumococcal conjugate vaccine (PCV10) using three primary doses and no booster dose (3 + 0 schedule). Data are scarce for the effect of PCV in the Asia and Pacific region. We aimed to evaluate the effect of PCV10 on pneumonia hospital admissions in children younger than 5 years and adults aged 55 years and older in Fiji, 5 years after vaccine introduction. Methods: We did a time-series analysis assessing changes in pneumonia hospital admissions at three public tertiary hospitals in Fiji. Four pneumonia outcomes were evaluated: all-cause pneumonia, severe or very severe pneumonia, hypoxic pneumonia, and radiological pneumonia. Participants aged younger than 2 months, 2–23 months, 24–59 months, and 55 years and older were included. Data were extracted from the national hospital admission database according to International Classification of Diseases-tenth revision codes J10·0-18·9, J21, and J22 for all-cause pneumonia. Medical records and chest radiographs were reviewed for the main tertiary hospital to reclassify hospital admissions in children aged younger than 2 years as severe or very severe, hypoxic, or radiological pneumonia as per WHO definitions. Time-series analyses were done using the synthetic control method and multiple imputation to adjust for changes in hospital usage and missing data. Findings: Between Jan 1, 2007, and Dec 31, 2017, the ratio of observed cases to expected cases for all-cause pneumonia was 0·92 (95% CI 0·70–1·36) for children aged younger than 2 months, 0·86 (0·74–1·00) for children aged 2–23 months, 0·74 (0·62–0·87) for children aged 24–59 months, and 1·90 (1·53–2·31) in adults aged 55 years and older, 5 years after PCV10 introduction. These findings indicate a reduction in all-cause pneumonia among children aged 24–59 months and an increase in adults aged 55 years and older, but no change among children aged younger than 2 months. Among children aged 2–23 months, we observed declines of 21% (95% CI 5–35) for severe or very severe pneumonia, 46% (33–56) for hypoxic pneumonia, and 25% (9–38) for radiological pneumonia. Mortality reduced by 39% (95% CI 5–62) for all-cause pneumonia, bronchiolitis, and asthma admissions in children aged 2–23 months. Interpretation: The introduction of PCV10 was associated with a decrease in pneumonia hospital admissions in children aged 2–59 months. This is the first study in a middle-income country in the Asia and Pacific region to show the effect of PCV on pneumonia, filling gaps in the literature on the effects of PCV10 and 3 + 0 schedules. These data support decision making on PCV introduction for other low-income and middle-income countries in the region. Funding: Department of Foreign Affairs and Trade of the Australian Government.

Background: In 2012, Fiji became the first independent Pacific island country to introduce rotavirus vaccine. We describe the impact of rotavirus vaccine on all-cause diarrhoea admissions in all ages, and rotavirus diarrhoea in children

This paper discusses lessons learned from a failed clinical trial investigating the use of a mobile application (app) to deliver a mindfulness intervention to middle-aged and older adults receiving services at a rehabilitation hospital in Ontario, Canada. A randomized controlled trial with 82 participants was planned, with the experimental group receiving access to a mindfulness app and a wait-list control group receiving access to the app after 4 weeks; however, the study could not be completed due to low recruitment rates. This implementation failure was considered from the perspective of the PARIHS framework. More specifically, Three key recruitment challenges were identified, and recommendations for future research provided. Firstly, the increasingly complex care needs of the study population appeared to influence eligibility; it would be beneficial for future research to consider adopting strategies to better understand the needs of the target population. Secondly, participants’ stage of care and readiness of change likely negatively influenced compliance and retention in this study, and should be assessed in future research. Finally, a lack of clinician integration into the research team negatively impacted recruitment in this study; future studies should consider integrating direct service providers into the research team as this may increase buy-in and referral rates. The challenges and recommendations outlined can inform design and implementation of future studies in this area.