Stillbirth rate and associated factors at the Bamenda Regional hospital, North-West region, Cameroon, from 2018 to 2022: a case control study.

BACKGROUND: Stillbirth is a common adverse pregnancy outcome worldwide, with an estimated 2.6 million stillbirths yearly. In Cameroon, the reported rate in 2015 was 19.6 per 1000 live births. Several risk factors have been described, but region-specific risk factors are not known in the northwest region of Cameroon. This study aims to determine the stillbirth rate and associated factors at the Bamenda Regional hospital, North-West region of Cameroon. MATERIALS AND METHODS: A Hospital-based case‒control study conducted from December 2022 to June 2023 on medical files from 2018 to 2022 at the Bamenda Regional Hospital. Cases were women with stillbirths that occurred at a gestational age of ≥ 28 weeks, while controls were women with livebirths matched in a 1:2 (1 case for 2 controls) ratio using maternal age. Sociodemographic, obstetric, medical, and neonatal factors were used as exposure variables. Multivariable logistic regression was used to determine adjusted odds ratios of exposure variables with 95% confidence intervals and a p value of < 0.05. RESULTS: A total of 12,980 births including 116 stillbirths giving a stillbirth rate of 8.9 per 1000 live births. A hundred cases and 200 controls were included. Factors associated with stillbirths after multivariable analysis include nulliparity (aOR = 3.89; 95% CI: 1.19-12.71; p = 0.025), not attending antenatal care (aOR = 104; 95% CI: 3.17-3472; p = 0.009), history of stillbirth (aOR = 44; 95% CI: 7-270; p < 0.0001), placenta abruption (aOR = 14; 95% CI: 2.4-84; p = 0.003), hypertensive disorder in pregnancy (aOR = 18; 95% CI: 3.4-98; p = 0.001), malaria (aOR = 8; 95% CI: 1.51-42; p = 0.015), alcohol consumption (aOR = 9; 95% CI: 1.72-50; p = 0.01), birth weight less than 2500 g (aOR = 16; 95% CI: 3.0-89; p = 0.001), and congenital malformations (aOR = 12.6; 95% CI: 1.06-149.7;p = 0.045). CONCLUSION: The stillbirth rate in BRH is 8.9 per 1000 live births. Associated factors for stillbirth include nulliparity, not attending antenatal care, history of stillbirth, placental abruption, hypertensive disorder in pregnancy, malaria, alcohol consumption, birth weight less than 2500 g, and congenital malformations. Close antenatal care follow-up of women with such associated factors is recommended.

Stillbirths in Cameroon: an analysis of the 1998-2011 demographic and health surveys.

BACKGROUND: Many countries, including Cameroon, have found it challenging to estimate stillbirths, as there are limited available reports accurately. This analysis aimed to assess stillbirth rates and identify risk factors for stillbirth in Cameroon using successive Demographic and Health Survey data. METHODS: We conducted a cross-sectional analysis of data collected during the Demographic and Health Surveys of 1998, 2004, and 2011. Data were analyzed using SPSS 20.0. Logistic regressions were used to identify factors associated with stillbirth through odds ratios (ORs) at 95% confidence intervals (CI). Results were considered statistically significant at p-value less than 0.05. RESULTS: The crude stillbirth rate was 21.4 per 1,000 births in 2004 and 24 per 1,000 births in 2011, with respective standard errors of 1.8 and 1.3. The stillbirth rate increased with the mother's age (p < 0.001). The stillbirth rate reduction was prolonged between 1998 and 2011, with an annual reduction rate of 1.6%. The study observed that residing in rural areas, low socioeconomic status, and low level of education were risk factors associated with stillbirths. CONCLUSION: Cameroon's stillbirth rate remains very high, with a slow reduction rate over the last 20 years. Although some efforts are ongoing, there is still a long way forward to bend the curve for stillbirths in Cameroon; supplementary strategies must be designed and implemented, especially among rural women, the poor, and the less educated.

Une anthropologie impliquée pour améliorer les soins aux nouveau-nés au Cameroun.

INTRODUCTION: Policy directions in the health sector are based on research which provides insight into implemented actions and helps to formulate improvement recommendations for health. In Cameroon, an innovative experience of anthropological research on newborn health was followed by a process of appropriating findings by the Ministry of Public Health aiming at improving the quality of care. We suggest reporting this Cameroonian experience of interdisciplinary collaboration and involved research. METHOD: Coinciding with the anthropological study on newborn care in hospital maternities and at home conducted by researchers in the field of anthropology from December 2016 to June 2017, a process of appropriating findings was carried out. This article accurately describes this process both at the peripheral level, during "reflexive returns" in investigated maternity hospitals, and at the central level within the framework of work conducted by the study's steering committee. It reports on the changes that have taken place as a result of the study both at the level of health structures and at the level of national policies and strategies with a view to improving the quality of newborns care. RESULTS: The output of this process is twofold. At the peripheral level, activities of "reflexive returns" led to in situ changes of some harmful practices detrimental to the survival of the newborn, such as inappropriate use of the cradle in the birth room and lack of knowledge relative to the fight against hypothermia through the practice of skin-to-skin contact. At central level, changes concerned communication and strengthening policies and strategies of newborn care. CONCLUSION: The contribution of anthropology in the production evidence-based data is of paramount importance for the implementation of strategies to improve the quality of neonatal care. It opens up new perspectives for the sustainable improvement of the quality of care for newborns.

[Using anthropology to improve newborn health care in Cameroon]. / Une anthropologie impliquée pour améliorer les soins aux nouveau-nés au Cameroun.

INTRODUCTION: Policy directions in the health sector are based on research which provides insight into implemented actions and helps to formulate improvement recommendations for health. In Cameroon, an innovative experience of anthropological research on newborn health was followed by a process of appropriating findings by the Ministry of Public Health aiming at improving the quality of care. We suggest reporting this Cameroonian experience of interdisciplinary collaboration and involved research. METHOD: Coinciding with the anthropological study on newborn care in hospital maternities and at home conducted by researchers in the field of anthropology from December 2016 to June 2017, a process of appropriating findings was carried out. This article accurately describes this process both at the peripheral level, during "reflexive returns" in investigated maternity hospitals, and at the central level within the framework of work conducted by the study's steering committee. It reports on the changes that have taken place as a result of the study both at the level of health structures and at the level of national policies and strategies with a view to improving the quality of newborns care. RESULTS: The output of this process is twofold. At the peripheral level, activities of "reflexive returns" led to in situ changes of some harmful practices detrimental to the survival of the newborn, such as inappropriate use of the cradle in the birth room and lack of knowledge relative to the fight against hypothermia through the practice of skin-to-skin contact. At central level, changes concerned communication and strengthening policies and strategies of newborn care. CONCLUSION: The contribution of anthropology in the production evidence-based data is of paramount importance for the implementation of strategies to improve the quality of neonatal care. It opens up new perspectives for the sustainable improvement of the quality of care for newborns.

Rates of HBV, HCV, HDV and HIV type 1 among pregnant women and HIV type 1 drug resistance-associated mutations in breastfeeding women on antiretroviral therapy.

BACKGROUND: HBV, HCV, HDV and HIV are blood borne and can be transmitted from mother-to-child. Reports of HBV infection rates show up to 11.9% in Cameroon while for HCV, the rate is less than 2%. More so, as pregnant women get enrolled in the HIV PMTCT Programme and stay in the care continuum, selection of HIV-1 drug resistant strains is evident. We sought to determine the seroprevalence of HBV, HCV, HDV and HIV among pregnant women, assess their knowledge, attitudes and practices on transmission and prevention of HBV infection, and determine HIV drug resistance profile of breastfeeding women. METHODS: A serosurvey of HBV, HCV, HDV and HIV was carried out among 1005 pregnant women in Yaounde, Cameroon. In 40 HIV-infected breastfeeding women enrolled in the PMTCT Programme, HIV-1 genotypes and HIV-1 resistance to NRTIs, NNRTIs and PIs, were determined by phylogeny and the Stanford University HIV Drug Resistance interpretation tool, respectively. RESULTS: Among the pregnant women, the rates of HIV-1, HBV, HCV and HDV infections were 8.5, 6.4, 0.8 and 4.0%, respectively. About 5.9% of the women knew their HBV status before pregnancy unlike 63.7% who knew their HIV status. Although 83.3% reported that vaccination against HBV infection is a method of prevention, and 47.1% knew that HBV could be transmitted from mother-to-child, only 2.5% had received the Hepatitis B vaccine. Of the 40 women on antiretroviral therapy (ART), 9 had at least one major resistance-associated mutation (RAM, 22.5%) to NRTI, NNRTI or PI. Of these M184 V (12.5%), K70R (10.0%), K103 N (12.5%), Y181C (10.0%), M46 L (2.5%) and L90 M (2.5%) were most frequently identified, suggesting resistance to lamivudine, nevirapine, efavirenz and zidovudine. Eighty four percent were infected with HIV-1 recombinant strains with CRF02_AG predominating (50%). CONCLUSIONS: The rates of HBV and HIV-1 infections point to the need for early diagnosis of these viruses during pregnancy and referral to care services in order to minimize the risk of MTCT. Furthermore, our results would be useful for evaluating the HIV PMTCT Programme and Treatment Guidelines for Cameroon.

An assessment of antiretroviral drug initiation to pregnant women of unknown HIV status during labour and delivery in Cameroon.

BACKGROUND: Evidence from previous research has shown that antiretroviral (ARV) drug initiation to seropositive pregnant women could significantly contribute to eliminating new paediatric infections even when started during labour and delivery. This study therefore seeks to assess missed opportunities for ARV initiation during this critical period of pregnancy to improve outcomes of the prevention of mother-to-child transmission (PMTCT) programmes in Cameroon. METHODS: A retrospective study was conducted on the 2014 PMTCT data for labour and delivery among pregnant women of unknown HIV status within health facilities in six regions of Cameroon (428 eligible facilities). Outcomes were summarised using (relative) frequencies. ARV initiations for eligible facilities were stratified per region and per facility type (public and private facilities). Initiation to ARV was reported using odds ratios and 95% confidence intervals. RESULTS: An average of 14.6% of the 9 170 pregnant women presenting with unknown HIV status at labour and delivery, were diagnosed HIV-positive. A cumulative average from the six regions revealed that only half (51.4%) of these seropositive women received an ARV regimen. The findings from the North-West region depict 100% initiation to ARV among the study population. The odds of ARV initiation in the study population was more likely in the public health facilities than the private facilities for five regions, excluding the North-West (odds ratio of 1.35 [1.07, 170]). CONCLUSION: A significant portion of women do not receive the care required, especially in private health facilities. Evidence from the results in the North West region suggest that processes to address health system barriers to improve PMTCT uptake are feasible in Cameroon.

Low birth weight in a sub-urban area of Cameroon: an analysis of the clinical cut-off, incidence, predictors and complications.

BACKGROUND: The World Health Organisation recommends that each country adopts its own cut-off value of low birth weight (LBW) for clinical use. The aims of this study were to establish a clinical cut-off point for LBW and to determine its incidence, predictors and complications in a sub-urban area's hospital of Cameroon. METHODS: We conducted a study in two phases: a 6-year retrospective phase during which we collected demographic and clinical information from the records of the maternity of the Buea Regional Hospital (BRH) and a 3-month prospective phase during which data were collected from consenting pregnant women using a structured questionnaire, and newborns were examined and followed after birth. RESULTS: A total of 4941 records were reviewed during the retrospective phase and the 10(th) centile of birth weights was 2600 g. In the 200 pregnant women enrolled during the prospective phase, using this cut-off yielded an incidence of LBW of 19.0 %. Independent predictors of LBW were preterm delivery, hypertensive disorders in pregnancy, HIV infection, maternal age >36 years, maternal height <150 cm and pre-delivery BMI < 25 kg/m(2). Neonates with LBW were more likely to have neonatal asphyxia, foetal distress, respiratory distress and neonatal death. CONCLUSIONS: Our results suggest that newborns under 2600 g have LBW in sub-urban Cameroon. They represent one out of every five babies, and they deserve close care. Preventive measures targeting the predictors described here are warranted to reduce the incidence and complications. Similar studies in urban areas are required in order to generalize the results.

Outcome of deliveries among adolescent girls at the Yaoundé central hospital.

BACKGROUND: Adolescent pregnancies are a growing public health problem in Cameroon. We sought to study the outcome of such pregnancies, in order to inform public health action. METHODS: A cross-sectional analysis of 5997 deliveries which compared the outcome of deliveries in adolescent (10-19 years old) pregnant women registered at the Yaoundé Central Hospital between 2008 and 2010 to that of their non-adolescent adult (≥ 20 years old) counterparts. Variables used for comparison included socio-demographic and obstetric characteristics of parturients, referral status, and maternal and fetal outcomes. Predictors of maternal and of perinatal mortality were determined through binomial logistic modeling. RESULTS: Adolescent deliveries represented 9.3% (560) of all pregnancies registered. Adolescent pregnancies had significantly higher rates of both gestational duration extremes: preterm as well as post-term deliveries (29.3% versus 24.5%, p = 0.041 OR 1.28 95% CI 1.01-1.62 and 4.9 versus 2.4%, p = 0.014 OR 2.11 95% CI 1.46-3.87 respectively). Both groups did not differ significantly with respect to mean blood loss, rates of cesarean or instrumental deliveries. Adolescent deliveries however required significantly twice as many episiotomies (OR 2.15 95% CI 1.59-2.90). The likelihood of perineal tears in the adolescent group was significantly higher than that in the adult group on assuming episiotomies done would have been tears if they had not been carried out (OR 1.45 95% CI 1.16-1.82). Adolescent parturients had a higher likelihood of apparent fetal death at birth as well as perinatal fetal death after resuscitation efforts (AOR 1.75 95% CI 1.25-2.47 and AOR 1.69 95% CI 1.17-2.45 respectively).Comparisons of pregnancy outcomes between early (10-14 years), middle (15-17 years) and late adolescence (18-19 years) found no significant differences. Predictors of maternal death included having been referred, having had ≥5 deliveries and preterm deliveries. These were also predictors of perinatal death, as well as being a single mother, primiparous, and multiple gestations. CONCLUSIONS: Adolescent pregnancies in Cameroon compared to those in adults are associated with poorer outcomes. There is need for adolescent-specific services to prevent teenage pregnancies as well as interventions to prevent and manage the above mentioned predictors of in-facility maternal and perinatal mortality.

Post-partum trend in blood pressure levels, renal function and proteinuria in women with severe preeclampsia and eclampsia in Sub-Saharan Africa: a 6-months cohort study.

BACKGROUND: Preeclampsia and eclampsia, which are the most frequent hypertensive disorders in pregnancy, are associated with renal involvements. We aimed to assess the time trend in blood pressure levels, renal function and proteinuria after delivery, and investigate their determinants in Cameroonian women with severe preeclampsia and eclampsia. METHODS: This was a prospective cohort study involving 54 women with severe preeclampsia and eclampsia, conducted between July 2010 and February 2012 at the central maternity unit of the Yaoundé Central Hospital. Clinical and laboratory parameters were recorded from day-1 to 6 months after delivery. Mixed-linear and logistic regression models were used to relate baseline and within follow-up levels of covariates, with changes in blood pressure levels, renal function and proteinuria, as well as persisting hypertension, renal failure and proteinuria. RESULTS: During follow-up, a significant improvement was observed in blood pressure, renal function and proteinuria (all p < 0.002). Thirteen (24.1%) patients with renal failure at delivery recovered completely within six weeks. Twenty-six (48.1%), 17 (31.5%) and 1 (1.8%) patients had persisting proteinuria at 6 weeks, 3 months and 6 months post-delivery, respectively. Corresponding figures for persisting hypertension were 23 (42.6%), 15 (27.8%) and 8 (14.8%). Advanced age, higher body mass index, low gestational age at delivery, low fetal birth weight, and proteinuria at delivery were the main risk factors for persisting hypertension at 3 months, meanwhile low fetal birth weight, severe preeclampsia and proteinuria at delivery were correlated with persisting proteinuria at 3 months. Advanced age and higher body mass index were the only determinants of the composite outcome of persisting hypertension or proteinuria at three and six months. CONCLUSION: Hypertension and proteinuria are very common beyond the postpartum period in Cameroonian women with severe preeclampsia and eclampsia. Long-term follow-up of these women will help preventing and controlling related complications.

How risky are second trimester clandestine abortions in Cameroon: a retrospective descriptive study.

BACKGROUND: Complications of clandestine abortions increase with gestational age. The aim of this study was to identify complications of second trimester clandestine abortions (STA) and those of first trimester clandestine abortions (FTA). METHODS: This retrospective descriptive study was conducted between March 1st and August 31st, 2012 in the University Teaching Hospital and the Central Hospital, Yaoundé (Cameroon). The files of women with clandestine abortions carried out outside our units, but received in our settings for some complications were reviewed. Variables studied were maternal age, parity, marital status, gestational age at the time of abortion, the abortion provider and the method used, the duration of antibiotic coverage, the time interval between abortion and consultation, the complications presented and the duration of hospital stay. Data of 20 women with STA (≥13 weeks 1 day) and those of 74 women with FTA (≤13 complete weeks) were analyzed and compared. The t-test was used to compare continuous variables. P value <0.05 was considered statistically significant. RESULTS: Women with STA had high parities (P = 0.0011). STAs were mostly performed by nurses and were usually done by dilatation and curettage or dilatation and evacuation, manual vacuum aspiration, intramuscular injection of an unspecified medication, transcervical foreign body insertion, amniotomy and misoprostol. STA complications were severe anemia, hypovolemic shock, uterine perforation and maternal death. CONCLUSIONS: Clandestine abortions, especially second trimester abortions, are associated with risks of maternal morbidity and mortality especially when done by nurses. Therefore, women should seek for help directly from trained health personnel (Gynecologists & Obstetricians). Moreover, nurses should be trained in uterine evacuation procedures. They should also refer women who want to carry out STA to Gynecologists and Obstetricians. Finally, to reduce the prevalence of abortion in general, the government should make contraception available to all women, as well as use public media to sensitize women on the dangers of abortion and on the need to use family planning services.

Clinical malaria among pregnant women on combined insecticide treated nets (ITNs) and intermittent preventive treatment (IPTp) with sulphadoxine-pyrimethamine in Yaounde, Cameroon.

BACKGROUND: Malaria remains a burden for pregnant women and the under 5. Intermittent preventive treatment of pregnant women (IPTp) for malaria with sulfadoxine - pyrimethamine (SP) has since replaced prophylaxis and legislation has been reinforced in the area of insecticide treated mosquito nets (ITNs) in Cameroon. Clinical malaria despite all these measures remains a problem. We compared the socio-obstetrical characteristics of women who developed clinical malaria and those who did not though in the same regimen. METHODS: A 5 - year nested cohort study (2007 - 2011 inclusive) at the tertiary level hospitals in Yaounde. Pregnant women who willingly accepted to participate in the study were enrolled at booking and three doses of SP were administered between 18 - 20 weeks of gestation, between 26-28 weeks and between 32 - 34 weeks. Those who developed clinical malaria were considered as cases and were compared for socio - obstetrical characteristics with those who did not. Venous blood was drawn from the women in both arms for parasite density estimation and identification and all the clinical cases were treated conventionally. RESULTS: Each arm had 166 cases and many women who developed clinical malaria were between 15 and 19 years (OR 5.5, 95% CI 3.9 - 5.3, p < 0.001). They were of low gravidity (OR 6.5, 95% CI 3.8 - 11.3, p < 0.001) as well as low parity (OR 4.6, 95% CI 2.7 - 7.9, p < 0.001). The cases were single women (OR 4.58, 95% CI 2.54 - 8.26, p < 0.001) and had attained only primary level of education (OR 4.6, 95% CI 2.8 - 7.9, p < 0.001). Gestational ages were between 20 to 30 weeks during clinical malaria (OR 6.8, 95% CI 4.1 - 11.7, p < 0.001). The time between the first and second dose of SP was longer than ten weeks in the cases (OR 5.5, 95% CI 3.2 - 9.3, p < 0.001) and parasite density was higher also among the cases (OR 6.9, 95% CI 5.9 - 12.1, p < 0.001). CONCLUSION: Long spacing between the first and second dose of SP seemed to be responsible for clinical malaria in the cases.

Students' perspectives on research and assessment of a model template designed to guide beginners in research in a medical school in Cameroon.

BACKGROUND: Research activities for medical students and residents (trainees) are expected to serve as a foundation for the acquisition of basic research skills. Some medical schools therefore recommend research work as partial requirement for certification. However medical trainees have many difficulties concerning research, for which reason potential remedial strategies need to be constantly developed and tested. The views of medical trainees are assessed followed by their use and appraisal of a novel "self-help" tool designed for the purposes of this study with potential for improvement and a wider application. METHODS: This study was a cross-sectional survey of volunteering final-year medical students and residents of a medical school in Cameroon. RESULTS: This study surveyed the opinions of a total of 120 volunteers of which 82 (68%) were medical students. Three out of 82 (4%) medical students reported they had participated in research activities with a publication versus 10 out of 38 residents (26%). The reported difficulties in research for these trainees included referencing of material (84%), writing a research proposal (79%), searching for literature (73%) and knowledge of applicable statistical tests (72%) amongst others. All participants declared the "self-help" tool was simple to use, guided them to think and better understand their research focus. CONCLUSION: Medical trainees require much assistance on research and some "self-help" tools such as the template used in this study might be a useful adjunct to didactic lectures.

Prevalence and risk factors of transmission of hepatitis delta virus in pregnant women in the Center Region of Cameroon.

BACKGROUND: Hepatitis B virus (HBV) and hepatitis delta virus (HDV) co-infection has been described as the most severe form of viral hepatitis, and can be co-transmitted from mother-to-child. A seroprevalence of 4.0% of HDV infection was reported in pregnant women in Yaoundé, and 11.9% in the general population in Cameroon. Our objective was to describe the rate of HDV infection in HBsAg-positive pregnant women and to determine risk factors associated with mother-to-child transmission of HDV. MATERIALS AND METHODS: A cross-sectional, descriptive study was conducted from January 2019 to July 2022 among pregnant women attending antenatal contacts in seven health structures in the Centre Region of Cameroon. A consecutive sampling (non-probability sampling) was used to select only pregnant women of age over 21 years, who gave a written informed consent. Following an informed consent, an open-ended questionnaire was used for a Knowledge, Attitude and Practice (KAP) survey of these women, and their blood specimens collected and screened for HBsAg, anti-HIV and anti-HCV antibodies by rapid tests and ELISA. HBsAg-positive samples were further screened for HBeAg, anti-HDV, anti-HBs, and anti HBc antibodies by ELISA, and plasma HDV RNA load measured by RT-qPCR. RESULTS: Of 1992 pregnant women, a rate of 6.7% of HBsAg (133/1992) with highest rate in the rural areas, and 3.9% of hepatitis vaccination rate were recorded. Of 130, 42 (32.3%) were anti-HDV antibody-positive, and 47.6% had detectable HDV RNA viraemia. Of 44 anti-HDV-positive cases, 2 (4.5%) were co-infected with HBV and HCV, while 5 (11.4%) with HIV and HBV. Multiple pregnancies, the presence of tattoos and/or scarifications were significantly associated with the presence of anti-HDV antibodies. Of note, 80% of women with negative HBeAg and positive anti-HBe serological profile, had plasma HDV RNA load of more than log 3.25 (>10.000 copies/ml). CONCLUSION: These results show an intermediate rate of HDV infection among pregnant women with high level of HDV RNA viremia, which suggest an increased risk of vertical and horizontal co-transmission of HDV.

Toward the elimination of hepatitis B: networking to promote the prevention of vertical transmission of hepatitis B virus through population-based interventions and multidisciplinary groups in Africa.

The WHO African Region had 81 million people with chronic hepatitis B in 2019, which remains a silent killer. Hepatitis B virus (HBV), hepatitis delta virus (HDV), and HIV can be transmitted from the mother to child. If the HBV infection is acquired at infancy, it may lead to chronic hepatitis B in 90% of the cases. WHO reports that 6.4 million children under 5 years live with chronic hepatitis B infection worldwide. The prevention of mother-to-child transmission (PMTCT) of HBV is therefore critical in the global elimination strategy of viral hepatitis as we take lessons from PMTCT of HIV programs in Africa. We sought to create a network of multidisciplinary professional and civil society volunteers with the vision to promote cost-effective, country-driven initiatives to prevent the MTCT of HBV in Africa. In 2018, the Mother-Infant Cohort Hepatitis B Network (MICHep B Network) with members from Cameroon, Zimbabwe, and the United Kingdom and later from Chad, Gabon, and Central African Republic was created. The long-term objectives of the network are to organize capacity-building and networking workshops, create awareness among pregnant women, their partners, and the community, promote the operational research on MTCT of HBV, and extend the network activities to other African countries. The Network organized in Cameroon, two "Knowledge, Attitude and Practice" (KAP) surveys, one in-depth interview of 45 health care workers which revealed a high acceptability of the hepatitis B vaccine by families, two in-person workshops in 2018 and 2019, and one virtual in 2021 with over 190 participants, as well as two workshops on grant writing, bioethics, and biostatistics of 30 postgraduate students. Two HBV seroprevalence studies in pregnant women were conducted in Cameroon and Zimbabwe, in which a prevalence of 5.8% and 2.7%, respectively, was reported. The results and recommendations from the MICHep B Network activities could be implemented in countries of the MICHep B Network and beyond, with the goal of providing free birth dose vaccine against hepatitis B in Africa.

Enhancing interventions for prevention of mother-to-child- transmission of hepatitis B virus.

Prevention of mother-to-child transmission of hepatitis B virus (HBV) infection is a cornerstone of efforts to support progress towards elimination of viral hepatitis. Current guidelines recommend maternal screening, antiviral therapy during the third trimester of high-risk pregnancies, universal and timely HBV birth dose vaccination, and post-exposure prophylaxis with hepatitis B immunoglobulin for selected neonates. However, serological and molecular diagnostic testing, treatment and HBV vaccination are not consistently deployed, particularly in many high endemicity settings, and models predict that global targets for reduction in paediatric incidence will not be met by 2030. In this article, we briefly summarise the evidence for current practice and use this as a basis to discuss areas in which prevention of mother-to-child transmission can potentially be enhanced. By reducing health inequities, enhancing pragmatic use of resources, filling data gaps, developing advocacy and education, and seeking consistent investment from multilateral agencies, significant advances can be made to further reduce vertical transmission events, with wide health, societal and economic benefits.

Using family planning service statistics to inform model-based estimates of modern contraceptive prevalence.

The annual assessment of Family Planning (FP) indicators, such as the modern contraceptive prevalence rate (mCPR), is a key component of monitoring and evaluating goals of global FP programs and initiatives. To that end, the Family Planning Estimation Model (FPEM) was developed with the aim of producing survey-informed estimates and projections of mCPR and other key FP indictors over time. With large-scale surveys being carried out on average every 3-5 years, data gaps since the most recent survey often exceed one year. As a result, survey-based estimates for the current year from FPEM are often based on projections that carry a larger uncertainty than data informed estimates. In order to bridge recent data gaps we consider the use of a measure, termed Estimated Modern Use (EMU), which has been derived from routinely collected family planning service statistics. However, EMU data come with known limitations, namely measurement errors which result in biases and additional variation with respect to survey-based estimates of mCPR. Here we present a data model for the incorporation of EMU data into FPEM, which accounts for these limitations. Based on known biases, we assume that only changes in EMU can inform FPEM estimates, while also taking inherent variation into account. The addition of this EMU data model to FPEM allows us to provide a secondary data source for informing and reducing uncertainty in current estimates of mCPR. We present model validations using a survey-only model as a baseline comparison and we illustrate the impact of including the EMU data model in FPEM. Results show that the inclusion of EMU data can change point-estimates of mCPR by up to 6.7 percentage points compared to using surveys only. Observed reductions in uncertainty were modest, with the width of uncertainty intervals being reduced by up to 2.7 percentage points.

[Factors associated to the coiling of umbilical cord: case-control study conducted in three hospitals in Yaoundé]. / Facteurs associés aux circulaires du cordon: étude cas-témoin dans trois hôpitaux de Yaoundé.

INTRODUCTION: The coiling of umbilical cord is the winding of the umbilical cord around a part of the fetal body once or several times. It is the most common abnormality of the cord, its prevalence varies according to the authors from 5.7% to 35.1%. In 2011, the rate of perinatal mortality due to the coiling of umbilical cord in Cameroun was 6.1%. However factors associated to it are little known in our context. Our purpose was to determine factors associated to the coiling of umbilical cord in three hospitals in Yaoundé. METHODS: We conducted an analytical case-control study in the Maternity Unit at the Central Hospital of Yaoundé, the University Teaching Hospital of Yaoundé and the Social and Health Nkoldongo Animation Center over a period of 4 months. The study-group composed of newborns with coiling of umbilical cord was compared with two control groups (newborns without coiling of umbilical cord). All the fetuses were cephalic at delivery (singleton pregnancies at term). Pre-established technical data sheets were filled with data collected and analyzed based on the Microsoft Excel 2017 and SPSS software Version 23. The parameters used for the analysis were the average age, standard deviation and frequency, the raw odds ratio (OR) and/or adjusted (aOR) with their 95% confidence interval. P was considered significant for any value less than 5. RESULTS: Out of a total of 3,300 deliveries, 500 newborns (15.15%) had coiling of umbilical cord. All the coils were around the neck. We retained and studied 136 newborns with coiling of umbilical cord (study group) vs 272 newborns without coiling of umbilical cord (control group). Factors independently associated with coiling were non editable: length of the cord = 70cm (ORa = 32 CI = 17.5-35 p = 0.02), male sex (ORa = 67.09 CI = 22.31 - 97.46 P = 0.001), APGAR score 5th minute <7 (ORa =76.98 CI = 2.19 - 27.05 P=0.017) and modifiable factors were gestational age = 42WA (ORa = 15.15 CI = 6.14-18.2 P = 0.001). CONCLUSION: The coiling of umbilical cord is a frequent cord abnormality. We suggest to the decision-makers to increase awareness among health workers and the population on the importance of ultrasound scan of the third trimester in order to detect coiling of umbilical cord and implement appropriate manage newborns. Clinicians should avoid as much as possible post-term pregnancy.

A case of Mayer-Rokitansky-Küster-Hauser syndrome in a low-resource tertiary hospital in Douala, Cameroon.

The Mayer-Rokitansky-Küster-Hauser syndrome is the congenital absence or underdevelopment of the uterus and vagina even though the external genitalia, ovaries and ovarian function are normal. This condition is uncommon in Cameroon. A 23-year-old woman of the Fulbé tribe, a predominantly Islamic tribe of the northern part of Cameroon, complained of the absence of menstruation after age of puberty and lower abdominal pain occurring almost at the same period every month. She has been married polygamously for 10 years and has been having normal, satisfactory sexual intercourse. The sonographic and laparoscopic findings of this patient were consistent with Mayer-Rokitansky-Küster-Hauser syndrome. The patient was counseled for in vitro fertilization and surrogacy. Patients with Mayer-Rokitansky-Küster-Hauser syndrome typically present with primary amenorrhea during adolescence. With the existing medical technology in Cameroon, this condition is easily accessible in tertiary healthcare facilities. Patients with Mayer-Rokitansky-Küster-Hauser syndrome could become mothers through in vitro fertilization and surrogacy, but the cost is prohibitive in Cameroon.

Management of neural tube defects in a Sub-Saharan African country: the situation in Yaounde, Cameroon.

BACKGROUND: Neural tube defect is a serious disabling but preventable congenital malformation with an incidence of 1.99 per 1000 births in Yaounde [A.K. Njamnshi, V. d e P. Djientcheu, A. Lekoubou, M. Guemse, M.T. Obama, R. Mbu, S. Takongmo, I. Kago. Neural tube defects are rare among black Americans but not in Sub-Saharan black Africans: The case of Yaounde-Cameroon. Journal of the Neurological Sciences 2008; 270: 13-17]. The management requires highly qualified personnel and a significant social cost. The aim of this study was to evaluate the management of neural tube defect in a resource-limited developing Sub-Saharan nation like Cameroon. METHODS: We reviewed all patients with neural tube defects admitted in the neonatology unit of the Mother and Child Center (Chantal Biya Foundation Yaounde) between January 1st 2000 and December 31st 2006. RESULTS: Sixty-nine (69) patients were enrolled. There was a male predominance (69.57%) in the sample. Myelomeningomecele represented 68.11% of cases, followed by encephalocele (27.54%) and meningocele (4.35%). Antenatal ultrasound examinations were done in 27 cases (32.8%). The prenatal diagnosis was made only in 8 cases. No medical abortion was performed in any of these cases. Medical abortion is illegal in Cameroon (except in certain specific situations) as well as other Sub-Saharan African countries. Hydrocephalus was diagnosed in 40.02% of cases. As most of the patients (62.32%) could not afford modern treatment, only 26.09% of them were operated at birth. The rest sought traditional and other forms of treatment, due to poverty or cultural beliefs. Eight patients (11.59%) died before surgery. Surgery consisted of local closure alone (40%) or local closure associated to CSF shunting (60%). The complications were wound dehiscence (13.69%), shunt infection (1.37%), meningitis (1.37%) and iatrogenic pulmonary oedema (1.37%). CONCLUSION: Neural tube defects are the most frequent and disabling malformations in neonates in the Sub-Saharan African paediatric environment. Prenatal management and outcome at birth are limited by poverty and cultural beliefs. Prevention is possible and may be better than palliative care in developing countries.

RISK FACTORS FOR SPONTANEOUS ABORTIONS IN TWO YAOUNDÉ DISTRICT HOSPITALS

Background. Abortion is the termination of a pregnancy before the age of fetal viability which, according to the WHO, is 22 weeks of pregnancy and/or with the fetus weigh less than 500 g. Spontaneous abortion is a public health problem. It's one of the most common complications of pregnancy. In order to contribute to the decrease of the morbidity and mortality linked to spontaneous abortions, we conducted this study, which the general objective was to study risk factors of spontaneous abortion. We carried out a cross-sectional case-control study in the District Hospitals of Biyem Methods. - Assi and Efoulan in Yaoundé. During six months, we collected 3774 records of pregnant women from January 1, 2020 to December 31.,2020. For each case (record of woman who had a spontaneous abortion), two controls (records of those who gave birth spontaneously at term) of the same age, were immediately recruited. Data were analyzed using IBM SPSS Version.23.0 software. Tools used to assess our results were: Fischer's exact test, frequency, odds ratio (OR) and P, with P signicant for any value less than 5%. We recruited 104 cases and 208 controls. Being unmarried, being from the littoral region, having a Results. history of stress, smoking, having started antenatal care and having had prenuptial check-up, independently increased the risk of spontaneous abortion with respectively aOR = 2.8 IC=1.24-6.31 aP= 0.013, aOR=4.31 IC= 1.09-17.02 aP= 0.037, aOR=11.86; CI=3.88-36.19; aP=<0.001, aOR=8.57; CI=3.41-21.54; aP=<0.001, aOR=10.4; CI=1.12-96.82; aP=0.04) and aOR=3.37; CI=1.67-6.79; aP<0.001). These risk factors being mostly modiable, should be sought and prevented Conclusion. in order to improve the prognosis of pregnancies in our context