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The early initiation of breastfeeding (EIBF) within one hour after birth enhanced mother–newborn bonding and protection against infectious diseases. This paper aimed to examine factors associated with EIBF in 13 Economic Community of West African States (ECOWAS). A weighted sample of 76,934 children aged 0–23 months from the recent Demographic and Health Survey dataset in the ECOWAS for the period 2010 to 2018 was pooled. Survey logistic regression analyses, adjusting for country-specific cluster and population-level weights, were used to determine the factors associated with EIBF. The overall combined rate of EIBF in ECOWAS was 43%. After adjusting for potential confounding factors, EIBF was significantly lower in Burkina Faso, Cote d’Ivoire, Guinea, Niger, Nigeria, and Senegal. Mothers who perceived their babies to be average and large at birth were significantly more likely to initiate breastfeeding within one hour of birth than those mothers who perceived their babies to be small at birth. Mothers who had a caesarean delivery (AOR = 0.28, 95%CI = 0.22–0.36), who did not attend antenatal visits (ANC) during pregnancy, and delivered by non-health professionals were more likely to delay initiation of breastfeeding beyond one hour after birth. Male children and mothers from poorer households were more likely to delay introduction of breastfeeding. Infant and young child feeding nutrition programs aimed at improving EIBF in ECOWAS need to target mothers who underutilize healthcare services, especially mothers from lower socioeconomic groups.

Background Influenza contributes substantially to severe acute respiratory infection (SARI) morbidity and mortality worldwide. However, few countries have estimated influenza disease burden, especially middle and low‐income countries. Burden data are important to understand the impacts of illness on the population and to inform interventions. Currently, Niger has no recommendations for seasonal influenza vaccination or antiviral use. We estimated the national number and rates of SARI and influenza‐associated SARI hospitalizations, mild/moderate illness, and death among children aged < 5 years in Niger. Methods We utilized influenza surveillance data among children aged < 5 years hospitalized with SARI at three sentinel hospitals located in Niamey during 2015–2018 along with estimated catchment area population data to calculate the influenza‐associated SARI hospitalization rates per 100,000 population. Rates were calculated for age groups < 1, 1–4, and < 5 years using the World Health Organization (WHO) methods and a hospital admission survey; then, we extrapolated the estimates nationally. We also used the influenza burden pyramid tool developed by WHO and the John Hopkins Center for Health Security to estimate influenza‐associated mild/moderate illnesses and influenza‐associated deaths for Niger. Results Influenza viruses were detected in 175/1796 (9.7%) specimens collected and tested during the study period from children aged < 5 years at the three SARI sentinel surveillance sites. The influenza percentage positive was 7.7% (58/754) among infants aged < 1 year and 11.3% (117/1038) among children aged 1–4 years. The estimated mean annual national number of SARI hospitalizations among children aged < 5 years was 16,406 (95% CI: 15,117–17,779) and the estimated SARI hospitalization rate per 100,000 population was 405.3 (95% CI: 373.5–439.2). The estimated mean annual national number of influenza‐associated SARI hospitalizations among children aged < 5 years was 1484 (95% CI: 1162–1813; rate: 36.7; 95% CI: 28.7–44.8). The estimated mean annual national number of influenza‐associated mild illnesses, hospitalized patients, and deaths among children aged < 5 years in Niger was 218,030 (95% CI: 43,303–527,236), 1261 (95% CI: 38–3271), 223 (95% CI: 22–614), and 15 (95% CI: 6–373) respectively. Conclusions ’This study estimated a substantial influenza disease burden among children aged < 5 years in Niger, highlighting, for decision makers, the importance of resource allocation and public health interventions like vaccination. Future efforts should consider estimating the potential cost–benefit of implementing prevention and control measures (e.g., influenza vaccine or antivirals) among children aged 6–59 months in Niger.

Niger faces a myriad of health challenges and development efforts are complicated by persistent poverty, high population growth rates, and climate change. Integrated social and behavior change (SBC) addresses health outcomes through collective action and approaches at the limited points of entry individuals have with the health system. We conducted a mixed-methods study to evaluate the effectiveness of an integrated SBC program in the Maradi, and Zinder regions of Niger. We applied contribution analysis, a theory-based plausibility analysis, to assess contributions of the intervention. We found the program contributed to improved behavioral determinants. Male engagement and income generating activities provided further support for women to practice health behaviors. However, increases in male partner out-migration was negatively associated with health outcomes. While the program did not generate statistically significant improvements in health outcomes in the intervention area, exposure to health messages and participation in women's groups were positively associated with health outcomes suggesting sustained implementation of the integrated SBC approach at scale may achieve improved health outcomes. Programs should continue to invest in health promotion efforts that include gender sensitive interventions. Further research is needed to understand how women's agency and autonomy evolves as household composition changes through male out-migration.

To explore the relationship between women's empowerment and WHO recommended infant and young child feeding (IYCF) practices in sub-Saharan Africa. Analysis was conducted using data from ten Demographic and Health Surveys between 2010 and 2013. Women's empowerment was assessed by nine standard items covering three dimensions: economic, socio-familial and legal empowerment. Three core IYCF practices examined were minimum dietary diversity, minimum meal frequency and minimum acceptable diet. Separate multivariable logistic regression models were applied for the IYCF practices on dimensional and overall empowerment in each country. Benin, Burkina Faso, Ethiopia, Mali, Niger, Nigeria, Rwanda, Sierra Leone, Uganda and Zimbabwe. Youngest singleton children aged 6-23 months and their mothers (n 15 153). Less than 35 %, 60 % and 18 % of children 6-23 months of age met the criterion of minimum dietary diversity, minimum meal frequency and minimum acceptable diet, respectively. In general, likelihood of meeting the recommended IYCF criteria was positively associated with the economic dimension of women's empowerment. Socio-familial empowerment was negatively associated with the three feeding criteria, except in Zimbabwe. The legal dimension of empowerment did not show any clear pattern in the associations. Greater overall empowerment of women was consistently and positively associated with multiple IYCF practices in Mali, Rwanda and Sierra Leone. However, consistent negative relationships were found in Benin and Niger. Null or mixed results were observed in the remaining countries. The importance of women's empowerment for IYCF practices needs to be discussed by context and by dimension of empowerment.

Background Exclusive breastfeeding (EBF) can prevent death and disease among young children. The proportion of EBF is low in Niger. This study aimed to identify the prevalence and correlates of exclusive breastfeeding. Methods We conducted a community-based cross-sectional study in urban and rural areas of Niger among mothers of infants under 7 months old. We used a structured questionnaire to investigate breastfeeding practices, sociodemographic factors, and health service use. We used multivariate analysis to explore the correlates of EBF since birth. Results The study involved 234 urban and 283 rural mothers. Colostrum was almost universally given to newborns (98.7% [231/234] urban and 97.9% [277/283] rural) and many mothers started breastfeeding within an hour of giving birth (69.2% [162/234] and 90.5% [256/283]). The proportion of EBF since birth in urban and rural areas was 15.8% (37/234) and 54.4% (154/283), respectively. Among mothers who had ceased EBF, proportion of prelacteal feeding was 85.3% (168/197) in urban areas and 62.0% (80/129) in rural areas, while 93.4% (183/196) and 72.7% (88/121) had stopped EBF within 1 week after birth respectively. The median duration of EBF was 1 week in urban and 2 months in rural areas. In urban areas, EBF was more likely in mothers with infants 3 months old or younger (Adjusted Odds Ratio [AOR] 2.78; 95% Confidence Interval 95% [CI] 1.07, 7.21) and problems with delivery including Caesarean section (AOR 3.60; 95% CI 1.17, 11.01). In rural areas, lower socioeconomic status (AOR 1.89; 95% CI 1.12, 3.18), early initiation of breastfeeding (AOR 4.04; 95% CI 1.50, 10.83) and delivery assisted by a traditional birth attendant (AOR 3.49; 95% CI 1.37, 8.89) were correlated with exclusive breastfeeding. Conclusions Exclusive breastfeeding was uncommon. Most mothers ceased EBF within 1 week after birth. Adequate information about EBF by health professionals around delivery seems to encourage its use. To encourage EBF in Niger, it is important to educate health professionals, including traditional birth attendants, and enable them to discuss the practice with mothers through individual counselling or group education.

Malnutrition is a major public health concern in Niger. The stunting rate in children in Niger is over 50%, one of the highest in the world. The purpose of this cross-sectional study was to examine children’s dietary diversity (CDD) and the maternal factors that impact CDD. A total of 1265 mother–child pairs were analyzed. Descriptive analysis was conducted to present maternal and child characteristics. To compare the mean scores of CDD in relation to the region, an independent sample t-test was conducted. A one-way ANOVA test was conducted to evaluate the CDD score by different age groups. A linear regression model was estimated to identify household, maternal and child factors that affect the CDD score. Our results indicate that most of the participants of our survey resided in rural areas and the majority (80.7%) of the mothers had no education. Factors such as region, children’s age, woman’s empowerment, vitamin A intake and wealth index were significant predictors of CDD (p < 0.05). The children residing in rural areas were more likely to have lower CDD scores (p < 0.05) than the children in urban areas, therefore becoming more susceptible to malnutrition.

Analysis of immunogenicity data is a critical component of vaccine development, providing a biological basis to support any observed protection from vaccination. Conventional methods for analyzing immunogenicity data use either post-vaccination titer or change in titer, often defined as a binary variable using a threshold. These methods are simple to implement but can be limited especially in populations experiencing natural exposure to the pathogen. A mixture model can overcome the limitations of the conventional approaches by jointly modeling the probability of an immune response and the level of the immune marker among those who respond. We apply a mixture model to analyze the immunogenicity of an oral, pentavalent rotavirus vaccine in a cohort of children enrolled into a placebo-controlled vaccine efficacy trial in Niger. Among children with undetectable immunoglobulin A (IgA) at baseline, vaccinated children had 5.2-fold (95% credible interval (CrI) 3.7, 8.3) higher odds of having an IgA response than placebo children, but the mean log IgA among vaccinated responders was 0.9-log lower (95% CrI 0.6, 1.3) than among placebo responders. This result implies that the IgA response generated by vaccination is weaker than that generated by natural infection. Multivariate logistic regression of seroconversion defined by ≥ 3-fold rise in IgA similarly found increased seroconversion among vaccinated children, but could not demonstrate lower IgA among those who seroresponded. In addition, we found that the vaccine was less immunogenic among children with detectable IgA pre-vaccination, and that pre-vaccination infant serum IgG and mother’s breast milk IgA modified the vaccine immunogenicity. Increased maternal antibodies were associated with weaker IgA response in placebo and vaccinated children, with the association being stronger among vaccinated children. The mixture model is a powerful and flexible method for analyzing immunogenicity data and identifying modifiers of vaccine response and independent predictors of immune response.

The current study aimed to examine the impact of sociodemographic and health-service factors on breast-feeding in sub-Saharan African (SSA) countries with high diarrhoea mortality. The study used the most recent and pooled Demographic and Health Survey data sets collected in nine SSA countries with high diarrhoea mortality. Multivariate logistic regression models that adjusted for cluster and sampling weights were used to investigate the association between sociodemographic and health-service factors and breast-feeding in SSA countries. Sub-Saharan Africa with high diarrhoea mortality. Children (n 50 975) under 24 months old (Burkina Faso (2010, N 5710); Demographic Republic of Congo (2013, N 6797); Ethiopia (2013, N 4193); Kenya (2014, N 7024); Mali (2013, N 3802); Niger (2013, N 4930); Nigeria (2013, N 11 712); Tanzania (2015, N 3894); and Uganda (2010, N 2913)). Overall prevalence of exclusive breast-feeding (EBF) and early initiation of breast-feeding (EIBF) was 35 and 44 %, respectively. Uganda, Ethiopia and Tanzania had higher EBF prevalence compared with Nigeria and Niger. Prevalence of EIBF was highest in Mali and lowest in Kenya. Higher educational attainment and frequent health-service visits of mothers (i.e. antenatal care, postnatal care and delivery at a health facility) were associated with EBF and EIBF. Breast-feeding practices in SSA countries with high diarrhoea mortality varied across geographical regions. To improve breast-feeding behaviours among mothers in SSA countries with high diarrhoea mortality, breast-feeding initiatives and policies should be context-specific, measurable and culturally appropriate, and should focus on all women, particularly mothers from low socio-economic groups with limited health-service access.

To determine undernutrition prevalence in 0-59-month-old children and its determinants during the period 2000-2015 in sub-Saharan Africa. Ecological study of time series prevalence of undernutrition in sub-Saharan Africa assessed from 2000 to 2015. Underweight and stunting prevalence from the World Bank database (2000-2015) were analysed. Mixed models were used to estimate prevalence of underweight and stunting. Country-specific undernutrition prevalence variation was estimated and region comparisons were performed. A meta-regression model considering health and socio-economic characteristics at country level was used to explore and estimate the contribution of different undernutrition determinants. Countries of sub-Saharan Africa. During 2000-2015, underweight prevalence in sub-Saharan Africa was heterogeneous, ranging between 7 and 40 %. On the other hand, stunting prevalence ranged between 20 and 60 %. In general, higher rates of underweight and stunting were estimated in Niger (40 %) and Burundi (58 %), respectively; while lowest rates of underweight and stunting were estimated in Swaziland (7 %) and Gabon (21 %). About 1 % undernutrition prevalence reduction per year was estimated across sub-Saharan Africa, which was not statistically significant for all countries. Health and socio-economic determinants were identified as main determinants of underweight and stunting prevalence variability in sub-Saharan Africa. Undernutrition represents a major public health threat in sub-Saharan Africa and its prevalence reduction during the period 2000-2015 was inconsistent. Improving water accessibility and number of medical doctors along with reducing HIV prevalence and poverty could significantly reduce undernutrition prevalence in sub-Saharan Africa.