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Mass media information, scientific articles and reports on measures to prevent infection are confusing at the least and figures from China and Iran lack cohesion. Reports suggest that Chinese scientists knew about coronavirus in early December 2019, but were told to conceal evidence by government. It is alleged that as cover-up, government officials intentionally withheld information that hospital workers had been infected by patients, a sign of how highly contagious the virus is. Researchers were also instructed to keep quiet and even ordered to destroy samples. Similar reports are also suggesting that Iran is under-reporting cases. In Africa, employees from a hospital in Zambia have also reported having been ordered not to speak publicly. They reported witnessing people who recently returned from China with coughs not being put in quarantine. Similar denials and cover-up strategies were seen in the 90s during the AIDS crisis. The guilt and shame that was associated with HIV were thought to have been associated with the intimate nature of transmission (mostly sexual) even though others got it through other routes including mother to child transmission etc. SARS-CoV-2 has not yet been proven to be intimately transmitted though having been isolated from semen. Why then the misinformation, shame, and guilt? How can countries move from the cover-up, blame games to responsibility as the virus defies containment? Some questions remain; How can cover-ups be prevented? How can governments be held accountable for cover-ups, misinformation, etc?

Background The program for the prevention of mother-to-child transmission (PMTCT) of human immunodeficiency virus (HIV) was launched in 2003 in China, but few studies have been conducted to describe the panorama of PMTCT. We investigated the rate and associated factors of mother-to-child transmission (MTCT) in China from 2004 to 2018. Methods HIV-infected pregnant women from two areas in China between 2004 and 2018 were enrolled. Antiretrovirals (ARVs) were provided to the mothers and their babies, and the children were followed and tested for HIV. Results In total, 857 mothers and their 899 children were enrolled, and the overall MTCT rate was 6.6% (95% CI 5.0–8.2). The MTCT rates of nonintervention, only formula feeding (FF), infant prophylaxis (IP) + FF, single dosage antiretrovirals (sdARVs) + IP + FF, zidovudine (AZT) alone+IP + FF and prenatal combination antiretroviral therapy (cART) + IP + FF were 36.4, 9.4, 10.0, 5.7, 3.8 and 0.3%, respectively. The MTCT rate declined over time. No ARVs, CD4 count Conclusions Although the overall MTCT rate remains relatively high, the real-world effect of prenatal cART+IP + FF in China has exerted the same protective effects in high-income countries. With the extension of prenatal cART for pregnant women with HIV, the MTCT rate of HIV has gradually declined in China. However, the coverage of prenatal cART for pregnant women should be further improved. The effect of only post-exposure prophylaxis for infants was limited.

A meta-analysis (MA) of natural vs. cesarean births in HBV infected mothers was performed to assess which delivery methods could minimize the mother-to-child transmission (MTCT) of Hepatitis B virus (HBV). Electrical databases PubMed, Embase and Cochrane Library were searched for the English papers about the HBV MTCT up to 19 August 2019. STATA 11.0 software was used for all analysis. Odds ratio (OR) and 95% confidence interval (CI) were used to present the effect size for MTCT at birth and MTCT more than 6 months. Heterogeneity was evaluated using the chi-squared Q and I2 test to determine the use of random effects model or fixed effects model. A total of 19 articles involving 11,144 HBV-positive pregnant women (5251 underwent natural delivery and 5893 received a cesarean section) were included in the study. The pooled OR for MTCT at birth was 0.42, 95% CI: 0.23–0.76 based on random effect model (I2 = 69.9%, p = .019). Meanwhile, in fixed effect model (I2 = 0.0%, p = .470), the pooled OR for MTCT more than 6 months was 0.62, 95% CI: 0.48–0.81. The results indicated that HBV infection in cesarean births significantly lower than that of vaginal delivery. Subgroup analysis of MTCT more than 6 months was clearly, and the results indicated that cesarean section significantly reduced the risk of MTCT (OR = 0.62, 95% CI: 0.48–0.81, p < .001). Cesarean section can reduce the risk of HBV MTCT and should be employed as a preventive measure. Due to the limitations of this study, further multi-center, large-sample randomized controlled trials must be performed to confirm these findings.

Issue In the state of São Paulo (SSP), the rate of mother-to-child transmission of HIV (MTCT) was estimated at 2.7%, in 2006. However, for reaching elimination, its level should be Description of the Problem The occurrence of MTCT cases shows failures of healthcare system. The aim of this study was to assess the response of the Sao Paulo State STI/AIDS Program to prevent MTCT, from 2010 to 2018. A descriptive analysis of clinical monitoring indicators of the PWLH was performed. The National Surveillance Data System was used to estimate the underreporting of cases. Data from antiretroviral drug delivery, viral load (VL) and genotyping results were used to calculate the indicators and were obtained through database of the National Antiretroviral Drug System, Laboratory Control System and Genotyping System. Results In the period, despite identifying 15,463 PWLH in the systems, only 11,316 were notified (26.8% underreporting). Comparing 2010 and 2018, there was an improvement in accessing combined antiretroviral therapy (cART) from 81.2% (1,366/1,683) to 86.6% (1,543/1,782); in performing of VL before delivery from 70.8% (1.192/1.683) to 72.8% (1.298/1.782); in VL suppression Lessons The decrease in the number of cases suggests improvement in preventing MTCT in the SSP. However, many challenges remain, such as breaking down individual, social and programmatic barriers to expand access to cART, pretreatment genotyping, VL suppression before delivery, retention in care and adherence to cART over time. Key messages The National Systems of surveillance, antiretroviral drugs, laboratory and genotyping network are important for performing clinical monitoring, reducing treatment gaps and underreporting. The integration of the Sexually Transmitted Infections and HIV/AIDS Program with the Primary Care and the Maternal and Child Health Program is essential to achieve the goals of eliminating MTCT.

Background HIV infection affects women of childbearing age, and unplanned pregnancies among those infected are prevalent. This fact increases the potential risk for mother-to-child transmission during pregnancy, childbirth or postpartum through breastfeeding. The Brazilian Ministry of Health recommends anti-HIV testing for all pregnant women. Access to antiretroviral therapy is available through prenatal and maternity care, and breastfeeding is contraindicated. The detection rate of pregnant women living with HIV in Brazil has increased by 23.8% in the last ten years. The aim of this study was to estimate the incidence of seroconversion of HIV infection in children exposed to mother-to-child transmission and examine associated risk factors for the period 2007-2017 in Santa Catarina, Brazil. Methods A historical cohort study was conducted using secondary data related to the notifications of HIV-infected pregnant woman and follow-up of HIV-exposed infants. Odds ratios were used to estimate the risk of infection. Results We identified 5,554 HIV-infected pregnant women and 4,559 HIV-exposed infants, 130 of whom had confirmed seroconversion, which corresponds to a rate of 2.9%. Antiretroviral use during pregnancy [OR = 9.31 (5.97-14.52) p Conclusions The study concluded that, between 2007 and 2017, the HIV seroconversion rate was 2.9% among live births, with a tendency to decrease. Seroconversion was associated with not using antiretroviral therapy during pregnancy and breastfeeding. These data reveal gaps in prenatal care regarding adherence to treatment and follow-up of HIV-infected mothers, resulting in new HIV infections among children that could otherwise be prevented. Key messages Vertical transmission of HIV is a public health challenge, which requires strategies for surveillance and quality care. This study may provide relevant information to promote public health policies, with quality care for pregnant women and children living with HIV/AIDS.

Human immunodeficiency virus (HIV) viral load (VL) during pregnancy is a critical determinant of the risk of HIV mother-to-child transmission (MTCT). Prior studies suggest that VL suppression is influenced by antiretroviral regimen. In this study, using secondary real-life data from the Ministry of Health of Brazil, we compared VL suppression at 60–180 days after the first antiretroviral therapy (ART) prescription during pregnancy and time to undetectable VL among pregnant women under treatment with double nucleoside/nucleotide regimens combined with efavirenz, boosted lopinavir, boosted atazanavir, or raltegravir, with adjustment for potential confounders in multivariable models. A total of 18,997 pregnant women living with HIV were included in the study. Compared to regimens containing lopinavir, we found that atazanavir-, efavirenz-, and raltegravir-based regimens were superior in achieving both outcomes after adjustment for age, social vulnerability index, time under ART, baseline CD4+ cell count, and baseline HIV VL. Raltegravir-containing regimens had the highest adjusted odds/rates of VL suppression compared to patients with other regimens. Elimination of HIV MTCT is still a critical public health issue in many countries. Our findings suggest that raltegravir-based regimens were superior when compared to efavirenz-, lopinavir-, and atazanavir-based antiretroviral regimens in achieving suppression of HIV VL.

Objectives The risk of mother-to-child HIV transmission can be reduced to ≤0.5% if the mother’s HIV status is known before delivery. This study describes 2006-2014 trends in diagnosed HIV infection documented on delivery discharge records and associated sociodemographic characteristics among women who gave birth in US hospitals. Methods We analyzed data from the 2006-2014 National Inpatient Sample and identified delivery discharges and women with diagnosed HIV infection by using International Classification of Diseases, Ninth Revision, Clinical Modification codes. We used a generalized linear model with log link and binomial distribution to assess trends and the association of sociodemographic characteristics with an HIV diagnosis on delivery discharge records. Results During 2006-2014, an HIV diagnosis was documented on approximately 3900-4400 delivery discharge records annually. The probability of having an HIV diagnosis on delivery discharge records decreased 3% per year (adjusted relative risk [aRR] = 0.97; 95% CI, 0.94-0.99), with significant declines identified among white women aged 25-34 (aRR = 0.93; 95% CI, 0.88-0.97) or those using Medicaid (aRR = 0.93; 95% CI, 0.90-0.97); among black women aged 25-34 (aRR = 0.95; 95% CI, 0.92-0.99); and among privately insured women who were black (aRR = 0.96; 95% CI, 0.92-0.99), Hispanic (aRR = 0.92; 95% CI, 0.86-0.98), or aged 25-34 (aRR = 0.96; 95% CI, 0.92-0.99). The probability of having an HIV diagnosis on delivery discharge records was greater for women who were black (aRR = 8.45; 95% CI, 7.56-9.44) or Hispanic (aRR = 1.56; 95% CI, 1.33-1.83) than white; for women aged 25-34 (aRR = 2.33; 95% CI, 2.12-2.55) or aged ≥35 (aRR = 3.04; 95% CI, 2.79-3.31) than for women aged 13-24; and for Medicaid recipients (aRR = 2.70; 95% CI, 2.45-2.98) or the uninsured (aRR = 1.87; 95% CI, 1.60-2.19) than for privately insured patients. Conclusion During 2006-2014, the probability of having an HIV diagnosis declined among select sociodemographic groups of women delivering neonates. High-impact prevention efforts tailored to women remaining at higher risk for HIV infection can reduce the risk of mother-to-child HIV transmission.

This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To assess the benefits and harms of tenofovir‐based antiviral combination regimens for hepatitis B virus (HBV) for the prevention of mother‐to‐child transmission of HBV, in HIV‐positive pregnant women co‐infected with HBV.

BACKGROUND Nationwide antenatal human T-cell leukemia/lymphoma virus type-1 (HTLV-1) antibody screening has been conducted in Japan. The purpose of our study was to clarify the issues related to feeding options to prevent postnatal mother-to-child transmission. METHODS Of the pregnant carriers at 92 facilities in Japan between 2012 and 2015, 735 were followed prospectively. Among the children born to them, 313 (42.6%) children were followed up to the age of 3 and tested for HTLV-1 antibodies. The mother-to-child transmission rate was calculated for each feeding option selected before birth. RESULTS Among the 313 pregnant carriers, 55.0, 35.1, 6.1, and 3.8% selected short-term breast-feeding (≤3 months), exclusive formula feeding, frozen-thawed breast-milk feeding, and longer-term breast-feeding, respectively. Despite short-term breast-feeding, 8-18% of the mothers continued breast-feeding for 4-6 months. The mother-to-child transmission rate with short-term breast-feeding was 2.3% (4/172), and its risk ratio compared with that of exclusive formula feeding was not significantly different (0.365; 95% CI: 0.116-1.145). Because of the small number of children who were fed by frozen-thawed breast-milk, their mother-to-child transmission rate was not statistically reliable. CONCLUSIONS Pregnant HTLV-1 carriers tended to select short-term breast-feeding in Japan. While short-term breast-feeding was not always easy to wean within 3 months, it may be a viable option for preventing postnatal mother-to-child transmission because the vertical transmission rate with short-term breast-feeding was not significantly higher than that with exclusive formula feeding. Increasing the follow-up rates for children born to pregnant carriers may provide clearer evidence of preventative effects by short-term breast-feeding and frozen-thawed breast-milk feeding.

Background: Breastfeeding an infant exposed to HIV carries the risk of HIV acquisition whilst not breastfeeding poses higher risk of death from malnutrition, diarrhea, and pneumonia. In Uganda, mothers living with HIV are encouraged to discontinue breastfeeding at 12 months but data are limited. We examined the frequency and factors associated with cessation of breastfeeding at one year among mothers living with HIV at Ndejje Health Center IV, a large peri-urban health facility in Uganda.Methods: This retrospective cohort study involved all mothers living with HIV enrolled in HIV care for ≥12 months between June 2014 and June 2018. We abstracted data from registers, held focus group discussions with mothers living with HIV and key informant interviews with healthcare providers. Cessation of breastfeeding was defined as the proportion of mothers living with HIV who had discontinued breastfeeding at one year. We summarized quantitative data descriptively, tested differences in outcome using Chi-square and t-tests, and established independently associated factors using modified Poisson regression analysis at 5% statistical significance level. We thematically analyzed qualitative data to enrich and triangulate the quantitative results. Results: Of 235 participants, 150 (63.8%) had ceased breastfeeding at one year and this was independently associated with the infant being female (Adjusted risk ratio (aRR): 1.25, 95% confidence interval (CI), 1.04, 1.50), the mother being multiparous (aRR, 1.26; 95%CI, 1.04-1.53), and the initiation of breastfeeding being on the same-day as birth (aRR, 0.06; 95%CI, 0.01-0.41).The reasons for ceasing breastfeeding included male infants over breastfeed than females, maternal literacy and knowledge adequacy about breastfeeding, support and reminders from the partner, and boys can bite once they get teeth. Conversely, the reasons for not ceasing to breastfeed encompassed insufficient knowledge about breastfeeding and girls feed a bit less.Conclusion: Suboptimal proportion of infants were ceased from breastfeeding at one year and this might increase the risk of mother to child transmission of HIV. Cessation of breastfeeding was more likely among female infants and multiparous mothers but less likely when breastfeeding was initiated on same-day as birth. Interventions to enhance cessation of breastfeeding should target groups of mothers with lower rates.

This study aims to evaluate the epidemiological characteristics of mother-to-child transmission (MTCT) of HIV and identify the possible factors leading to infant HIV infection using a retrospective cohort study of early infant diagnosis (EID). Information on a total of 3,145 exposed infant-mother pairs was collected from the EID platform from July 2014 to December 2019. The MTCT rate was 2.1%. Spatial-temporal maps showed that rates varied by year and by region, with four districts (Baise, Guigang, Guilin, and Hechi) maintaining rates of2.0% in 2019. The rate of antiretroviral therapy (ART) use was 94.4%, with a gradual increase in prescriptions of highly active ART (HAART) from 83.0% in 2014 to 92.4% in 2019. A majority of 99.5% of infants were receiving artificial feeding. Factors associated with MTCT were ART use (odds ratio [OR] = 0.065, confidence interval [95% CI] = 0.035-0.121) and artificial feeding (OR = 0.091, 95% CI = 0.018-0.452). HAART was more helpful in decreasing the risk of MTCT compared with monotherapy (OR = 0.115, 95% CI = 0.014-0.933). ART during the postpartum period correlated with an increased risk (OR = 11.579, 95% CI = 1.402-95.960) compared with use of ART during pregnancy. This study indicates that MTCT rate of HIV is decreasing meaningfully in Guangxi. Some areas still face challenges in elimination of MTCT and need further resources and interventions. Future program planning should take into consideration the fact that ART use-in particular the use of HAART or ART during pregnancy-and replacement feeding may contribute to the prevention of MTCT.

A major global public health challenge is the continuance of new pediatric HIV infections primarily because of mother to child transmission of HIV occurring mainly in sub-Saharan African countries. The purpose of this study was to examine antiretroviral therapy (ART) refill adherence and its determinants among pregnant women living with HIV in Nigeria.A retrospective review of pharmacy refill records was undertaken to examine adherence data on 275 pregnant women undergoing ART in 4 high-volume HIV treatment sites in Nigeria. A pharmacy refill adherence measure was used to assess medication refill behavior of pregnant women living with HIV who had received an ART refill during a period of 3 months. Medication-based ART refill adherence was categorized as % adherence (100% adherence) or % nonadherence (100% adherence) to the ART refill scheduled dates. Refill appointments were scheduled on a 28-day cycle. Multivariable logistic regression analysis was performed.Of the 275 women, 59.3% (95% CI, 53.1%-65.5%) were adherent to their ART refill schedule. Women who initiated ART during the third trimester of their current pregnancy had the lowest adherence rate of 30.8% (95% CI, 7.7%-53.8%) compared with women who commenced ART before conception or during the first or second trimester. The availability of a treatment support person was significantly associated with ART refill adherence. The odds of medication-based refill adherence were 2.9 times higher for participants who had a treatment support person (odds ratio = 2.9; 95% CI, 1.6-5.2; p = 0.001).Results indicate that having a treatment support person could contribute to improving ART adherence in pregnant women living in Nigeria.

Chloroquine (CQ) and Hydroxychloroquine (HCQ) have been proposed to be effective at treating COVID-19 patients. We, and others, have previously reported on the capacity of CQ to reduce HIV-1 replication in vitro. We tested CQ administration in post-partum mothers on influencing HIV-1 viral loads in human milk as a means of lowering mother to child transmission. A Phase I/II, randomized, placebo-controlled study to evaluate chloroquine administration to reduce HIV-1 RNA levels in human milk: the CHARGE study. Thirty HIV-1 positive pregnant Rwandese women (CQ n = 20; placebo n = 10) were enrolled in a 16-week study, with the treatment group receiving a 200 mg oral dose of CQ daily. Base-line plasma viral load (pVL) measurements and CD4 counts were determined prior to delivery, and pVL, breast milk VL (bmVL) and CQ levels measured during treatment. For women receiving treatment, CQ concentration was higher in breast milk compared to plasma (over 2.5-fold), with a positive correlation between the levels in the two compartments (P < 0.003). A link between high CQ concentrations in plasma and high CD4 counts (P < 0.001) was observed. Surprisingly, we found a significant increase in pVL after CQ treatment in over half of the mothers (n=11; P < 0.001) and with no alteration to bmVL measurements. No specific amino acid alterations in the gp120 envelope sequences could be associated with CQ administration. CQ usage is associated with a significant increase to pVL in early breastfeeding mothers from Rwanda which cautions against the use of CQ in such individuals. Our results highlight a discrepancy between CQ effects on modulating HIV-1 replication in vitro versus in vivo and indicate caution when prescribing CQ to postpartum HIV-1 untreated mothers. This discrepancy should be taken into consideration when testing CQ or HCQ treatment in COVID-19 clinical trials, especially relating to the post-partum setting.

Gastrointestinal (GI) microbiota play an important role in human health and wellbeing and the first wave of gut microbes arrives mostly through vertical transmission from mother to child. This study has undertaken to understand the microbiota profile of healthy Southeast Asian mother-infant pairs. Here, we examined the fecal, vaginal and breast milk microbiota of Indonesian mothers and the fecal microbiota of their children from less than 1 month to 48 months old. To determine the immune status of children and the effect of diet at different ages, we examined the level of cytokines, bile acids in the fecal water and weaning food frequency. The fecal microbiota of the children before weaning contained mainly Bacteroides and Bifidobacterium, which presented at low abundance in the samples of mothers. After weaning, the fecal microbiome of children was mainly of the Prevotella type, with decreasing levels of Bifidobacterium, thus becoming more like the fecal microbiome of the mother. The abundance of infant fecal commensals generally correlated inversely with potential pathogens before weaning. The fecal Bifidobacterium in children correlated inversely with the consumption of complex carbohydrates and fruits after weaning. The specific cytokines related to the proliferation and maturation of immunity were found to increase after weaning. A decreasing level of primary bile acids and an increase of secondary bile acids were observed after weaning. This study highlights the change in the GI microbiota of infants to adult-type microbiota after weaning and identifies diet as a major contributing factor.

Introduction. HIV/AIDS continue to be serious communicable disease whose impact on public health in Namibia is massive. It is estimated that the prevalence rate of HIV in Namibia is 17.2%, ranking the country as the fifth highest in sub-Saharan Africa (SSA). Some improvement in reducing the number of cases of HIV/AIDS has been made in the country, but the sporadic shortage of medicines continues to slow down government efforts to foster the emergence of an HIV-free generation of Namibians Objective of the study. Develop and demonstrate a mathematical supply-chain model, which can establish parameters to prevent stock-outs of NVP suspension. Method: The study adopted retrospective approach to acquire data from 2012-2016. Results. Gamma supply chain model was developed as the optimal model for NVP syrup and forecasted consumption for 2017-2018 was determined. Conclusion and recommendation. It is a recommendation of this study that new guidelines for implementation of optimal supply-chain models at the regional medical store, health centers and clinics be implemented for Nevirapine syrup.

An age-structured SIR compartmental model of Hepatitis B Virus (HBV) dynamics that incorporates vertical transmission and the effect of Treatment is developed. The model equations were first transformed into proportions, thus reducing the model equations from eight to six differential equations. The model is analyzed for the existence and stability of the disease-free equilibrium (DFE) state. We established that a disease-free equilibrium state exists and is locally asymptotically stable when the basic reproduction number R0 < 1 and the following threshold conditions (R1 < 1, R2 < 1, R3 < 1, R4 < 1, R5 < 1, R6 < 1, R7 < 1 and R8 < 1) are satisfied. This invariably is biologically interpreted to mean that eradication of the disease is possible in finite time under these conditions. Furthermore, the model was solved numerically using Runge- Kutta Fehlberg method of order four and numerical simulations carried out yields interesting results. Baseline data and parameters for Nigeria were use in the numerical simulation. Results in this paper suggest that high treatment rate should not be done in isolation; rather it should be combined with behavioral interventions which will reduce the prevalence of the infection. Mother to child (MTC) transmission of HBV can be reduced to the barest minimum if the probability of transmission from adult to adult and mother to child is significantly reduced to zero. To achieve this, education and counselling of both susceptible and infected juvenile and adults will go a long way to reduce the probability of transmission to the barest minimum. Finally, susceptible children must also be assisted to retain their current status via continuous counselling and education as the mature to susceptible adult at the rate of $\eta s$.

In their recent article in The BMJ (“Is elimination of vertical transmission of HIV in high prevalence settings achievable?”)1 Goga and colleagues make several important points, including that more realistic targets are needed to maintain momentum to reduce vertical transmission of HIV in countries with high prevalence. They also make a constructive proposal to encourage countries to use “dashboards” to track key coverage and process indicators, particularly during the “pre-elimination period,” and to encourage continuous programme assessment and use of data for improvement. We are concerned, however, that they misrepresent the World Health Organization (WHO) and global partners’ elimination of mother-to-child transmission of HIV and syphilis (EMTCT) initiative.2 The authors include a box showing the criteria for elimination of vertical transmission of HIV from the …

Hepatitis C virus (HCV) is associated with liver complicated diseases resulting in end-stage hepatocellular carcinoma. Although vertical transmission from mother to child serves as one of the routes of HCV acquisition in children, yet HCV infection in pregnant women and children is still underappreciated in sub-Saharan Africa. Therefore, this study investigated the burden of HCV, associated risk factors, and viremia among antenatal and postnatal clinic attendees in the rural and urban communities of Kogi State, Nigeria. Atotal of 176 blood samples were collected from 78 (44.32%) consenting breastfeeding (nursing) mothers and 98 (55.8%) pregnant mothers (age ranged 18-47 years) (SD = +12.1; Median = 26.3) and tested for anti-HCV by ELISA technique. All anti-HCV-positive samples were retested by Taq one-step RT-PCR technique for viral RNA (viremia) detection. The bio-socio-demographic variables of the participants were correlated with the test results, using an IBM SPSS version 21 and MEOP 2010. Ameasure of goodness was considered significant at

Background: Prevention mother to child transmission counseling and testing (PMTCT) service is primarily provided at health facility level. However, their full implementation requires strong linkages with communities. The purpose of this study was to examine contextual effect of community health centers on midwife performance in the implementation of PMTCT? Subjects and Method: This was an analytic observational study with a cross-sectional design. The study was conducted at 24 community health centers in Madiun, East Java, from August to September 2019. A sample of 184 midwives was selected by total sampling. The dependent variable was implementation of PMTCT. The independent variables were age, tenure, knowledge, training, work performance, and accreditation. The data were collected by questionnaire and analyzed by a multiple linear regression. Results: Implementation of PMTCT counseling and testing improved with tenure ≥8 years (b= 0.51; 95% CI= 0.15 to 0.87; p= 0.006), good knowledge (b= 0.61; 95% CI= 0.33 to 0.89; p

The discovery of cases of HIV and AIDS at the age of under four years old in Indonesia indicates that there is still HIV transmission from mother to child. This study aims to identify the relationship between knowledge, information sources, family support, and the implementation of Provider-Initiated Testing and Counseling (PITC) examinations in pregnant women. This research was analytic descriptive with a cross-sectional approach conducted in August 2018, with 85 respondents selected by accidental sampling. The population in this study were all pregnant women who visited the community health center. Data was collected by giving questionnaires directly to respondents. Relationships between variables were tested with chi-square analysis. The results showed that 36 (62.1%) respondents have good behavior and good knowledge, and the chi-square test results obtained p-value=0.025. Thirty (68.2%) respondents have good behavior and have access to information sources and p-value=0.007. Thirty-three (67.3%) respondents have good behavior and have family support with the p-value=0.004. It can be concluded that there is a relationship between knowledge, information sources, family support, and the implementation of the PITC examination of pregnant women.

Research into HIV/AIDS has set a new precedence in the global health arena. The gains achieved in determining the epidemiology and burden of disease, in both resource rich and limited countries cannot be overestimated. The epidemic had merged medical and public health fraternities into collaborations to expedite the implementation of HIV prevention programmes internationally. With a heartening decline in mother to child transmissions of HIV, emphasis may now be directed to improving the quality of lives in children and adolescents living with HIV.

Background Maternal HIV coinfection is a key factor for mother-to-child transmission (MTCT) of HCV. However, data about HCV MTCT in HIV/HCV-coinfected pregnant women on combined antiretroviral treatment (ART) are scarce. This study assessed the HCV MTCT rate in the Madrid Cohort of HIV-infected women. Methods Retrospective study within the Madrid Cohort of HIV-infected pregnant women (2000-2012). Epidemiological, clinical and treatment related variables were analysed for the mother and infant pairs. HCV MTCT rate was determined. Results Three hundred thirty-nine HIV/HCV-coinfected women and their exposed infants were recorded. A total of 227 (67%) paired mother-children had available data of HCV follow-up and were included for the analysis. Sixteen children (rate 7.0%, 95%CI 3.7-10.4%) were HCV infected by 18 months of age, none of them coinfected with HIV. HIV/HCV-coinfected pregnant women were mostly of Spanish origin with a background of previous injection drug use. HCV-genotype 1 was predominant. The characteristics of mothers that transmitted HCV were similar to those that did not transmit HCV with respect to sociodemographic and clinical features. A high rate (50%) of preterm deliveries was observed. Infants infected with HCV were similar at birth in weight, length and head circumference than those uninfected. Conclusion MTCT rates of HCV among HIV/HCV-coinfected women on ART within the Madrid cohort were lower than previously described. However, rates are still significant and strategies to eliminate any HCV transmission from mother to child are needed.

Vertical mother to child transmission has significantly decreased with the use of antiretroviral therapy (ART) in pregnant women and their babies. The success of prevention of mother to child transmission programmes has resulted in transmission rates decreasing from 3.6% in 2011 to 1.3% in 2017. This has placed SA on track for elimination of HIV via mother to child transmission. Unfortunately, in many developing countries, many women do not seek antenatal care early on in pregnancy and do not receive ART, or, do not adhere to treatment, and do not achieve adequate viral control to prevent transmission of infection to the baby. Infection with the human immunodeficiency virus results in a profound immunosuppression, making the host susceptible to various opportunistic infections and neoplasms. Effects of the virus on the host may be particularly dramatic in children as many of the organ systems are still developing.

Background. There are few large sample studies evaluating the safety and efficacy of lamivudine (LAM) or telbivudine (LdT) in preventing hepatitis B mother-to-child transmission (MTCT) in highly viremic mothers in the third trimester of pregnancy in real-world settings. The purpose of this study was to analyze a large sample size of HBV-infected mothers to better understand the safety and efficacy of LAM and LdT under the aforementioned criteria. Methods. During the period of November 2008 to November 2017, we retrospectively enrolled mothers with HBV DNA>1×106 IU/mL who received LAM or LdT during the third trimester of pregnancy and compared them to untreated mothers. All mothers were divided into the three following groups: the LAM group, the LdT group, and the control group. Results. A total of 2624 HBV-infected mothers were enrolled in the study, with 363 in the LAM group, 1283 in the LdT group, and 978 in the control group. The MTCT rates were significantly lower in the LAM or LdT group than that in the control group (0.4% or 0.3% versus 9.0%, P<0.001). Infants born to untreated mothers had a significantly higher risk of HBV infection (OR=28.6, 95% CI: 10.4–78.7, P<0.001). There were no significant differences in perinatal complications between the three groups (P>0.05). There were also no differences for gestational age or infants’ height, weight, Apgar scores, or birth defect rates. Postpartum discontinuation of antiviral therapy did not seem to increase the risk of postpartum alanine aminotransferase (ALT) flare. Conclusion. LAM or LdT treatment initiated in the third trimester for mothers with HBV DNA>1×106 IU/mL was equally safe and effective in preventing MTCT.

Prevention of mother to child transmission (PMTCT) of Human Immunodeficiency virus (HIV) during pregnancy is one of the great successes over the last two decades. Various regimens have been tried, eventually leading to the achievement of very low rates of PMTCT of HIV. The ultimate aim is to eliminate the mother to child transmission (EMTCT) of HIV. EMTCT includes the period from preconception to 18 months of age or 6 weeks post-cessation of breastfeeding if continued beyond18 months. The number of HIV exposed uninfected (HEU) infants exposed to HIV and antiretrovirals is utero and during breastfeeding is increasing. The care of the newborn of an HIV positive mother should not end at birth. A continuum of care extending postpartum and postnatally is required to identify and prevent infections. Neonates born to HIV positive mothers are exposed in-utero to antiretroviral drugs, antibiotics, anti-tuberculous therapy etc. which may lead to altered fetal programming. Antiretroviral drugs have the potential of causing adverse effects in the newborn. One needs to have a high index of suspicion when examining an HIV exposed neonate. Investigations must be done timeously to prevent further complications and long-term follow up is required for some of the neonates.

Prevention of HIV transmission from mother to child (PMTCT) has transformed the paediatric HIV epidemic. Understanding the complex transmission of HIV in-utero, intra-partum and post-partum remains a challenge but this holds the possibility of further innovative advances in PMTCT strategies. Universal HIV testing, and the careful usage and choice of antiretroviral drugs and infant nutritional practices forms the core of PMTCT strategies to ensure a healthy mother and a HIV uninfected child Pre-conceptual, antepartum and postpartum care of HIV infected women needs to encompass evidence based PMTCT strategies into accessible, comprehensive programmes and this holds the potential for the elimination of mother to child transmission in all contexts.

Background: The Nelson Mandela Academic Hospital (NMAH) in Mthatha, Eastern Cape, is a rural central hospital, serving one of the poorest districts in South Africa. The prevalence of and risk factors for congenital cytomegalovirus (CMV) in this area are not known. The aim was to evaluate the prevalence of congenital CMV and associated risk factors for babies born at NMAH.Methods: This was a cross-sectional study to determine the prevalence of congenital CMV infection among babies born at Nelson Mandela Academic Hospital. Mother–baby pairs delivered consecutively from Monday to Friday, who gave informed consent, were included. Demographic information was collected on a questionnaire. All babies were tested for congenital CMV using a saliva swab PCR within the first week of life.Results: A total of 302 births were assessed. Congenital CMV was prevalent in 18 births (5.96%; 95% CI 3.29–8.63) and had an equal prevalence between HIV-exposed and HIV-unexposed newborns (prevalence ratio [PR] = 1.00; 95% CI 0.94–1.06; p = 0.869).Conclusions: The prevalence of congenital CMV of 5.96% is similar to findings from other resource-limited settings. There was no significant association between maternal HIV status and congenital CMV. With the prevalence of congenital CMV being as high as it is in the studied setting, clinicians are advised to have a high index of suspicion, especially when mothers are CMV seropositive.

Mother-to-child transmission (MTCT) is the main route of transmission for HIV among under 5 children in Brazil. National data indicate that missed opportunities for HIV prevention of MTCT are still common in antenatal care (ANC). We studied variables related to target process indicators in a cohort of HIV exposed children. We used data from 1996 to 2013 related to HIV exposed uninfected and HIV-infected children attended in an HIV reference hospital in Rio de Janeiro, Brazil. Data were collected from baseline questionnaires applied to all children followed-up in the hospital. Gestational and perinatal history were extracted from the mother's ANC card. Infants were categorized according to dates of first HIV care at the unit (1996-2000, 2001-2006 and 2007-2013). Distances between recorded addresses and the nearest maternity/hospital were measured by Euclidean distance, the shortest car route calculated in Google Maps and the route of the available bus line. Of the 599 children who fulfilled the inclusion criteria, 178 (29.7%) were HIV-infected. Approximately 70% of infants exposed to the virus from 1996-2000 were infected, dropping to 15.2% from 2001-2006 and rebounding to 30.1% from 2007-2013. Birth cohort was associated with ANC, and mothers from 2007-2013 had a lower chance of attending ANC (OR = 0.16; 95%CI 0.08-0.30). In addition, when the distance home-birthplace was higher than 9.5 km, there was a lower chance that the mother had attended ANC (OR = 0.35; 95%CI 0.18-0.68). Birth cohort was associated to HIV and ANC, and our data showed that a reduction of ANC might be related to rebound in HIV cases. There seems to have an association between larger distances from home to the birthplace and absence of ANC, which suggests that ANC was being performed in the tertiary units instead of in the primary care facilities as recommended.

Background: Mother to Child Transmission of HIV (MTCTH) is a major public health challenge in Ethiopia. Monitoring and evaluation of the rate of HIV transmission among infants born to HIV positive mothers is the major indicator to understand the performance of a national HIV control program. However, this is not well documented in Oromia Regional State, Ethiopia. Method: A retrospective study was conducted in 43 health facilities at three Administrative Zones of Oromia Regional State, Ethiopia from November 2014 to January 2015. Medical records of HIV-exposed infants and their mothers enrolled between June 2012 and October 2014 in the study institutions was extracted using data extraction format. Rate of MTCTH and factors associate was computed using SPSS version 20.0 software. Result: A total of 492 HIV-exposed infants having HIV DNA/PCR test result were included in the study. The overall prevalence of HIV among HIV exposed infants was 7.70%. Infant failure to receive nevirapine (NVP) prophylaxis at birth(AOR = 18.110, 95% CI:5.177, 63.352), whose mothers received Antiretroviral Therapy (ART) treatment for less than 4 weeks (AOR = 4.196, 95% CI:1.40, 12.57), did not receive co-trimoxazole preventive therapy (AOR = 7.772, 95% CI: 2.547, 23.72), and on mixed feeding (AOR = 2.3, 95% CI: 1.167, 4.539) had an increased odds of HIV infection comparing to their counterpart among infants born to HIV infected mothers. Conclusion: The risk of HIV infection among infants born to HIV infected mothers was high in the study area. Hence, strengthening the prevention of mother-to-child transmission (MTCT) management activities that would trace the identified factors shall be recommended to reduce risk of HIV infection among infants born to HIV infected mothers. Keywords: Mother to child HIV transmission, Factors associated, HIV-exposed infants, Ethiopia

Industrialisation has introduced several lifestyle changes and medical advancements but their impact on intestinal microbiota acquisition is often overlooked. Even though these consequential changes in the microbiota could contribute to the disease burden that accompanies industrialisation, such as obesity and atopic disease. A healthy intestinal microbiota is acquired early in life but its exact origin is not fully elucidated. The maternal microbiota is a likely source because the infant and mother intestinal microbiota share identical strains. Successfully transmitting microbes from mother to child requires microbes in the maternal donor, contact between the maternal source and the infant, and an acquiring infant recipient. Transmission can be altered by changes to any of those three transmission determinants: (1) maternal microbiota sources are shaped by the mother’s genotype, diet, health status and perturbing antimicrobial exposure; (2) maternal contact is reduced through C-section and formula feeding and (3) engraftment in the infant recipient is determined by host habitat filtering, the established microbes and antibiotic disruptions. This review gives an overview of the possible maternal transmission routes, the disruptions thereof, and the missing links that should be addressed in future research to investigate the maternal transmissions that are crucial for obtaining a healthy infant microbiota.

International recommendations related to the prevention of mother-to-child transmission (PMTCT) of HIV have evolved rapidly over time; recommendations have also varied contextually in line with local constraints and national policies. This study examines how young Africans made sense of mother-to-child transmission (MTCT) and PMTCT and related barriers and facilitators between 1997 and 2014 in the context of these complex and changing recommendations. It uses a distinctive data source: 1,343 creative narratives submitted to HIV-themed scriptwriting competitions by young people aged 10–24 from 5 African countries (Senegal, Burkina Faso, Nigeria, Kenya and Swaziland) between 1997 and 2014. The study triangulates between analysis of quantifiable characteristics of the narratives, thematic qualitative analysis, and narrative-based approaches. MTCT occurs in 8% of the narratives (108), while it is prevented in 5% (65). Narratives differ according to whether they depict MTCT or PMTCT (or, rarely, both), evolve over time, and show cross-national thematic variation. In the aggregate, representations shift in line with increased access to testing and antiretroviral medications, with PMTCT narratives becoming more frequent and MTCT narratives becoming more hopeful as diagnosis becomes the gateway to ART access. However, storylines of intergenerational tragedy in which MTCT is depicted as inevitable persist through 2014. Alongside cross-national differences in theme and tone, narratives from higher prevalence Swaziland and Kenya situate MTCT/PMTCT more centrally within descriptions of life with HIV. Findings illustrate the need to improve communication about PMTCT, reframing negative cultural narratives to reflect the full promise of developments of the past decade and a half.

Background Prevention of mother to child transmission of HIV (PMTCT) services are critical to achieve national and global targets of 90% antiretroviral therapy (ART) coverage in PMTCT, and mother to child transmission rates less than 5%. In 2012, Kenya adopted WHO’s recommended ART regimen for PMTCT “Option B+”. Aims This study assesses progress made in adopting these new guidelines and associated outcomes. Methods We analysed programmatic data of 2604 mother–infant pairs enrolled in the HIV Infant Tracking System (HITSystem) at four government hospitals in Kenya between January, 2013 and December, 2016. We then compared PMTCT trends between 2010 and 2012 and 2013–2016 for the same four government hospitals. Results A total of 2,371 (91.1%) received some ART regimen, however; only 911 (56.2%) mothers received ART regimens compliant with WHO Option B+. From 2013 to 2016, the percent of mothers on WHO Option B + doubled from 42 to 84% (p

Even though Prevention of Mother to Child Transmission (PMTCT) program has been running in Indonesia since 2006, the proportion of human immunodeficiency virus (HIV)-infected pregnant women remains high in some districts in Indonesia. The PMTCT program aims to reduce transmission of HIV from mother to child. Thus it requires an examination of the PMTCT program implementation. The study was a qualitative study on PMTCT program implementation in South Jakarta, Indonesia, whereas the proportion of children with HIV positive in the area was quite high. The analysis used domain analysis by looking the implementation of PMTCT as a system consisting of input, process and output. PMTCT strategy is based on a comprehensive four-pronged strategy. This study found that scaling-up communication and education about PMTCT program from health provider to community was needed. In the first prong, there was no specific health provider for PMTCT program, it was still integrated with the MCH staff. PMTCT program did not disseminate information to the community.Therefore, it seemed that it was underutilized. In the second prong, implementation of HIV testing and counseling for couples of women living with HIV remained a bottleneck because women living with HIV felt fear to inform their HIV status to their partners. Thus, counseling and HIV testing for couples have not benefited at all. These women were unsatisfied with the quality of counseling, and the failure to provide antiretroviral treatments. This study found the low coverage and less responsiveness of PMTCT program to build a network of partners with various elements of government.

In Swaziland, no data are available on the rates of HIV infection and HIV-free survival among children at the end of the breastfeeding period. We performed a national crosssectional community survey of children born 18-24 months prior to the study, in randomly selected constituencies in all 4 administrative regions of Swaziland, from April to June 2015. Mother-to-child transmission (MTCT) of HIV and HIV-free survival rates were calculated for all HIV-exposed children. The overall HIV-free survival rate at 18-24 months was 95.9% (95% CI 94.1-97.2). The estimated proportion of HIV infected children among known HIV-exposed children was 3.6% (95% CI 2.4-5.2). Older maternal age, delivering at a health facility, and receiving antenatal antiretroviral drugs were independently associated with reduced risk for child infection or death. The Swaziland program for prevention of MTCT achieved high HIV-free survival (95.9%) and low MTCT (3.6%) rates at 18-24 months of age when Option A (infant prophylaxis) of the WHO 2010 guidelines was implemented.

Background Late-presenting pregnant women pose a challenge in the prevention of HIV-1 mother-to-child-transmission. We compared the safety and efficacy of raltegravir and lopinavir/ritonavir for this population. Methods We did a single-center, pilot, open-label, randomized trial in Brazil (N = 44). We randomly allocated late-presenting HIV-infected pregnant women (older than 18 years with a plasma HIV-1 RNA1000 copies/mL) to receive raltegravir 400 mg twice a day or lopinavir/ritonavir 400/100 mg twice a day plus zidovudine and lamivudine (1:1). The primary endpoint was virological suppression at delivery (HIV-1 RNA50 copies per mL), in all patients who received at least one dose of study drugs (modified intention-to-treat analysis). Missing information was treated as failure. We assessed safety in all patients. Results We enrolled and randomly assigned treatment to 33 patients (17 in raltegravir group) between June 2015 and June 2017. The study was interrupted by the IRB because a significant difference between arms was detected in an interim analysis. All patients completed follow up at delivery. At delivery, virological suppression was achieved by 13/17 (76.5%) of patients in raltegravir group, versus 4/16 (25.0%) in lopinavir/ritonavir group (RR 3.1, 95% CI: 1.3-7.4). Patients in raltegravir group had significantly higher proportion of virological suppression at 2, 4, and 6 weeks than lopinavir/ritonavir group. Adverse events were most of mild intensity, but patients in lopinavir/ritonavir group had significantly more gastrointestinal adverse events. There was neither discontinuation nor deaths in this trial. Conclusion Raltegravir might be a first-line option for treatment of HIV-infected late-presenting pregnant women.

Hepatitis B virus and hepatitis C virus have received a significant amount of attention in recent years, and both viruses share a significant amount of similarities with one another beyond just that they both primarily target the liver. In recent years, cases of both infections have been fueled by a nationwide epidemic of injection drug use. Most relevant to this audience, they are both transmitted from mother to child. The increased cases in young adults combined with mother to child transmission translate into more exposed infants that will need to be managed and followed. Screening of pregnant women for hepatitis B infection coupled with appropriate treatment and prophylaxis measures are incredibly effective to preventing transmission. Prevention of hepatitis C infection is not yet possible, but advances in antiviral therapy make interruption of transmission a future possibility.

Purpose Adolescent females aged 15–19 account for 62% of new HIV infections and give birth to 16 million infants annually. We quantify the risk of early mother-to-child transmission (MTCT) of HIV among adolescents enrolled in nationally representative MTCT surveillance studies in South Africa. Methods Data from 4,814 adolescent (≤19 years) and 25,453 adult (≥20 years) mothers and their infants aged 4–8 weeks were analyzed. These data were gathered during three nationally representative, cross-sectional, facility-based surveys, conducted in 2010, 2011–2012, and 2012–2013. All infants were tested for HIV antibody (enzyme immunoassay), to determine HIV exposure. Enzyme immunoassay-positive infants or those born to self-reported HIV-positive mothers were tested for HIV infection (total nucleic acid polymerase chain reaction). Maternal HIV positivity was inferred from infant HIV antibody positivity. All analyses were weighted for sample realization and population live births. Results Adolescent mothers, compared with adult mothers, have almost three times less planned pregnancies 14.4% (95% confidence interval [CI]: 12.5–16.5) versus 43.9% (95% CI: 42.0–45.9) in 2010 and 15.2% (95% CI: 13.0–17.9) versus 42.8% (95% CI: 40.9–44.6) in 2012–2013 (p < .0001), less prevention of MTCT uptake (odds ratio [OR] in favor of adult mothers = 3.36, 95% CI: 2.95–3.83), and higher early MTCT (adjusted OR = 3.0, 95% CI: 1.1–8.0), respectively. Gestational age at first antenatal care booking was the only significant predictor of early MTCT among adolescents. Conclusions Interventions that appeal to adolescents and initiate sexual and reproductive health care early should be tested in low- and middle-income settings to reduce differential service uptake and infant outcomes between adolescent and adult mothers.

Background & Objectives:Prevention of Mother to child Transmission (PMTCT) is a global intervention which aims at preventing mother to child transmission of Human Immunodeficiency Virus (HIV). The study aims to find out knowledge of pregnant women on Mother to child Transmission (MTCT) of HIV/AIDS (Acquired Immune Deficiency Syndrome).Materials & Methods:A cross-sectional study was carried out at Paropakar Maternity and Women’s Hospital, Kathmandu, Nepal among the pregnant women who came to visit Antenatal Clinic. Data was collected using non-probability purposive sampling technique. Face to face interview was done and a structured questionnaire was developed for data collection. Data analysis and interpretation were done in SPSS and MS Excel.Results:The total number of respondents was 80 with a mean age of 27.4 years. 90% (n=72) respondents were found to be literate. 86.3% (n=69) were well aware of the knowledge on PMTCT. Majority of the respondents (40%) mentioned that radio, TV/Media were the main sources of information about HIV/AIDS. Out of 32.5% (26) who had heard about the window period, only 26.9% (n=7) gave the correct answer. 93.8% (n=75) were well known about the routes of transmission of HIV but only 10.1% (n=7) gave the correct answer about it. Further, 54% (n=43) respondents knew about the availability of drugs to reduce MTCT of HIV/AIDS.Conclusion:The level of awareness about PMTCT among antenatal mothers was satisfactory. However, knowledge was inadequate which imparts for the need of health education about MTCT of HIV/AIDS in every health facilities of Nepal.

Introduction: HIV in children is a public health problem in a developing country like Nepal. The aim of the study was to determine the clinical, nutritional and immunological profile of HIV +ve children enrolled in the ART clinic of Pokhara Academy of Health Sciences (PAHS).Materials and Method: This was a retrospective study of children enrolled in the ART clinic over a period of 10 years from July 2007 to June 2017. Clinical characters, Nutritional status and immunological status of children enrolled in the ART clinic were noted in the predesigned pro forma from the record of the clinic and review of the chart of the patients.Results: One hundred twelve children were enrolled in the Clinic during the study duration. Out of them 57 were males and 55 were females. All the children acquired infection through mother to child transmission. Majority of them from age group 1 to 5 years at the time of presentation. Forty-six percent were in the clinical stage III. The median CD4 count was 283.Fifty percent of the children were undernourished. Most of the children were started on AZT/3TC/NVP as first line ART.Conclusion: Although perinatal route was the most common route of transmission of HIV in children, diagnosis was late in the age group of 1-5 years and most of them were diagnosed in the advanced stage of HIV with Low CD4 count.

We estimated mortality rate and predictors of death in children and adolescents who acquired HIV through mother-to-child transmission in Paraguay. In 2000-2014, we conducted a cohort study among children and adolescents aged 15 years. We abstracted data from medical records and death certificates. We used the Cox proportional hazards model for the multivariable analysis of mortality predictors. A total of 302 subjects were included in the survey; 216 (71.5%) were younger than 5 years, 148 (51.0%) were male, and 214 (70.9%) resided in the Asunción metropolitan area. There were 52 (17.2%) deaths, resulting in an overall mortality rate of 2.06 deaths per 100 person-years. The children and adolescents with hemoglobin levels ≤ 9 g/dL at baseline had a 2-times higher hazard of death compared with those who had levels 9 g/dL (HR 2.27, 95% CI 1.01-5.10). The mortality of HIV-infected children and adolescents in Paraguay is high, and anemia is associated with mortality. Improving prenatal screening to find cases earlier and improving pediatric follow-up are needed.

To determine the knowledge regarding hepatitis B virus (HBV) mother-to-child transmission (MTCT) and its prevention and treatment among healthcare workers (HCWs) in Guangdong Province, China, an HBV endemic area. An HBV knowledge questionnaire was administered to 900 HCWs from the 3rd Affiliated Hospital of Sun Yat-Sen University and 2 rural hospitals in Guangdong Province. The 27 items in the questionnaire fell into 3 sections: HBV MTCT general knowledge, respondents' practices of preventing HBV MTCT and awareness of the resources of preventing HBV MTCT. The data collected were coded and analysed using SPSS software version 20. In total, 503 of 900 HCWs responded to the survey (response rate: 55.9%). Eighty-four individuals responded correctly to all of the knowledge questions: 58 were doctors, and 26 were nurses (P