scholarly journals 1159Inequities in on-time childhood vaccination: Evidence from sub-Saharan Africa

2021 ◽  
Vol 50 (Supplement_1) ◽  
Author(s):  
Martin Mutua
Keyword(s):  
Rural Communities ◽  
Vaccination Coverage ◽  
Maternal Education ◽  
Household Wealth ◽  
Sub Saharan Africa ◽  
Childhood Vaccination ◽  
Demographic And Health Surveys ◽  
Place Of Residence ◽  
Multiple Indicator ◽  
Sub Saharan

Abstract Introduction Vaccination coverage has improved over the past decade but inequalities persist; the poorest, least educated, and rural communities are left behind. Programming has focused on increasing coverage and reaching the hardest to reach children but vaccination timeliness is equally important as delays leave children vulnerable to infections. This study examines the levels and inequities of on-time vaccination in the sub-Saharan African (SSA) region. Methods: The most recent Demographic and Health Surveys or Multiple Indicator Clusters Surveys since 2000 from SSA were used to assess on-time vaccination and inequalities by household wealth, maternal education, and place of residence. Inequalities were quantified using slope index of inequality and concentration index. Results The analysis included 153,632 children aged 12-36 months from 40 SSA countries. Median on-time vaccination coverage was below 50% in all four sub-regions. Differences in on-time vaccination were observed by place of residence in Southern (20.8 pp, 95%CI (0.8; 40.8)), West (17.5 pp, 95%CI (5.1; 29.9)), and Eastern (20.9 pp, 95%CI (6.5; 35.2)) regions. Wealth-related inequities were observed in Southern (22.6 pp, 95%CI (4.0; 41.2)), West (30.6 pp, 95%CI (19.1; 42.1)), and Eastern (26.1 pp, 95%CI (8.2; 44.0)) regions. Significant education-related differences in on-time vaccination were observed in West (20.7 pp, 95%CI (10.9; 30.5)), and Eastern (21.2 pp, 95%CI (7.0; 35.4)) regions. Conclusions On-time vaccination coverage was low in all sub-regions and nearly all countries. Inequalities in on-time immunization by household wealth, place of residence, and education existed in most countries. Concrete strategies to improve levels of timeliness are needed

scholarly journals Impact of Orphanhood on Underweight Prevalence in Sub-Saharan Africa

2008 ◽  
Vol 29 (1) ◽  
pp. 32-42 ◽  
Author(s):  
Jonathan Rivers ◽  
John Mason ◽  
Eva Silvestre ◽  
Stuart Gillespie ◽  
Mary Mahy ◽  
...  
Keyword(s):  
Household Wealth ◽  
Household Structure ◽  
Sub Saharan Africa ◽  
Demographic And Health Surveys ◽  
Wealth Status ◽  
Orphan Status ◽  
Confounding Variables ◽  
Multiple Indicator ◽  
Sub Saharan ◽  
Child Nutritional Status

Background In Africa, approximately 25 million people live with HIV/AIDS and 12 million children are orphaned. Although evidence indicates that orphans risk losing opportunities for adequate education, health care, and future employment, the immediate effects of orphanhood on child nutritional status remain poorly understood. Objective This paper assesses the nutritional impact of orphanhood, with particular emphasis on taking account of various factors potentially confounding or masking these impacts. Methods Child anthropometry and orphan status were examined in 23 Multiple Indicator Cluster Surveys and Demographic and Health Surveys throughout sub-Saharan Africa, which were subsequently merged into larger, region-specific datasets (East, West, and Southern Africa). To compare orphans and nonorphans, linear regression and probit models were developed, taking account of orphan status and type, presence of a surviving parent in the household, household structure, child age and sex, urban versus rural residence, and current wealth status. Results Few differences emerged between orphans and nonorphans in controlled and uncontrolled comparisons, regardless of orphan type, presence of surviving parent, or household structure. Age differentials did confound nutritional comparisons, although in the counterintuitive direction, with orphans (who were 8 months older on average) becoming less malnourished when age differences were taken into account. Wealth did appear to be associated with orphanhood status, although it did not significantly confound nutritional comparisons. Conclusions Orphans were not consistently more malnourished than nonorphans, even when potential confounding variables were examined. Since household wealth status is likely to change after becoming affected by HIV, ruling out wealth as a potential confounder would require more detailed, prospective studies.

scholarly journals Drought and child vaccination coverage in 22 countries in sub-Saharan Africa: A retrospective analysis of national survey data from 2011 to 2019

PLoS Medicine ◽  
2021 ◽  
Vol 18 (9) ◽  
pp. e1003678
Author(s):  
Jason M. Nagata ◽  
Adrienne Epstein ◽  
Kyle T. Ganson ◽  
Tarik Benmarhnia ◽  
Sheri D. Weiser
Keyword(s):  
Retrospective Analysis ◽  
Vaccination Coverage ◽  
Sub Saharan Africa ◽  
Childhood Vaccination ◽  
Annual Rainfall ◽  
Demographic And Health Surveys ◽  
Negatively Associated ◽  
Bcg Vaccination ◽  
Measles Vaccination ◽  
Sub Saharan

Background Extreme weather events, including droughts, are expected to increase in parts of sub-Saharan Africa and are associated with a number of poor health outcomes; however, to the best of our knowledge, the link between drought and childhood vaccination remains unknown. The objective of this study was to evaluate the relationship between drought and vaccination coverage. Methods and findings We investigated the association between drought and vaccination coverage using a retrospective analysis of Demographic and Health Surveys data in 22 sub-Saharan African countries among 137,379 children (50.4% male) born from 2011 to 2019. Drought was defined as an established binary variable of annual rainfall less than or equal to the 15th percentile relative to the 29 previous years, using data from Climate Hazards Group InfraRed Precipitation with Station (CHIRPS) data. We evaluated the association between drought at the date of birth and receipt of bacillus Calmette–Guérin (BCG), diphtheria–pertussis–tetanus (DPT), and polio vaccinations, and the association between drought at 12 months of age and receipt of measles vaccination. We specified logistic regression models with survey fixed effects and standard errors clustered at the enumeration area level, adjusting for child-, mother-, and household-level covariates and estimated marginal risk differences (RDs). The prevalence of drought at date of birth in the sample was 11.8%. Vaccination rates for each vaccination ranged from 70.6% (for 3 doses of the polio vaccine) to 86.0% (for BCG vaccination); however, only 57.6% of children 12 months and older received all recommended doses of BCG, DPT, polio, and measles vaccinations. In adjusted models, drought at date of birth was negatively associated with BCG vaccination (marginal RD = −1.5; 95% CI −2.2, −0.9), DPT vaccination (marginal RD = −1.4; 95% CI −2.2, −0.5), and polio vaccination (marginal RD = −1.3; 95% CI −2.3, −0.3). Drought at 12 months was negatively associated with measles vaccination (marginal RD = −1.9; 95% CI −2.8, −0.9). We found a dose–response relationship between drought and DPT and polio vaccinations, with the strongest associations closest to the timing of drought. Limitations include some heterogeneity in findings across countries. Conclusions In this study, we observed that drought was associated with lower odds of completion of childhood BCG, DPT, and polio vaccinations. These findings indicate that drought may hinder vaccination coverage, one of the most important interventions to prevent infections among children. This work adds to a growing body of literature suggesting that health programs should consider impacts of severe weather in their programming.

scholarly journals Crude childhood vaccination coverage in West Africa: Trends and predictors of completeness

2017 ◽  
Vol 2 ◽  
pp. 12 ◽  
Author(s):  
Jacob S. Kazungu ◽  
Ifedayo M.O. Adetifa
Keyword(s):  
West Africa ◽  
Health Facility ◽  
Vaccination Coverage ◽  
Maternal Education ◽  
Sub Saharan Africa ◽  
Childhood Vaccination ◽  
Demographic And Health Surveys ◽  
African Countries ◽  
High Coverage ◽  
Country Specific

Background: Africa has the lowest childhood vaccination coverage worldwide. If the full benefits of childhood vaccination programmes are to be enjoyed in sub-Saharan Africa, all countries need to improve on vaccine delivery to achieve and sustain high coverage. In this paper, we review trends in vaccination coverage, dropouts between vaccine doses and explored the country-specific predictors of complete vaccination in West Africa.  Methods: We utilized datasets from the Demographic and Health Surveys Program, available for Benin, Burkina Faso, The Gambia, Ghana, Guinea, Cote d’Ivoire, Liberia, Mali, Niger, Nigeria, Senegal, Sierra Leone and Togo, to obtain coverage for Bacillus Calmette-Guerin, polio, measles, and diphtheria, pertussis and tetanus (DPT) vaccines in children aged 12 – 23 months. We also calculated the DPT1-to-DPT3 and DPT1-to-measles dropouts, and proportions of the fully immunised child (FIC). Factors predictive of FIC were explored using Chi-squared tests and multivariable logistic regression.  Results: Overall, there was a trend of increasing vaccination coverage. The proportion of FIC varied significantly by country (range 24.1-81.4%, mean 49%). DPT1-to-DPT3 dropout was high (range 5.1% -33.9%, mean 16.3%). Similarly, DPT1-measles dropout exceeded 10% in all but four countries. Although no single risk factor was consistently associated with FIC across these countries, maternal education, delivery in a health facility, possessing a vaccine card and a recent post delivery visit to a health facility were the key predictors of complete vaccination.  Conclusions: The low numbers of fully immunised children and high dropout between vaccine doses highlights weaknesses and the need to strengthen the healthcare and routine immunization delivery systems in this region. Country-specific correlates of complete vaccination should be explored further to identify interventions required to increase vaccination coverage. Despite the promise of an increasing trend in vaccination coverage in West African countries, more effort is required to attain and maintain global vaccination coverage targets.

scholarly journals Decomposing the rural–urban gap in factors associated with childhood immunisation in sub-Saharan Africa: evidence from surveys in 23 countries

2021 ◽  
Vol 6 (1) ◽  
pp. e003773
Author(s):  
Edward Kwabena Ameyaw ◽  
Yusuf Olushola Kareem ◽  
Bright Opoku Ahinkorah ◽  
Abdul-Aziz Seidu ◽  
Sanni Yaya
Keyword(s):  
Decomposition Analysis ◽  
Household Wealth ◽  
Sub Saharan Africa ◽  
Demographic And Health Surveys ◽  
Childhood Immunisation ◽  
Urban Settings ◽  
Factors Associated ◽  
Rural And Urban ◽  
Full Immunisation ◽  
Sub Saharan

BackgroundAbout 31 million children in sub-Saharan Africa (SSA) suffer from immunisation preventable diseases yearly and more than half a million children die because of lack of access to immunisation. Immunisation coverage has stagnated at 72% in SSA over the past 6 years. Due to evidence that full immunisation of children may be determined by place of residence, this study aimed at investigating the rural–urban differential in full childhood immunisation in SSA.MethodsThe data used for this study consisted of 26 241 children pooled from 23 Demographic and Health Surveys conducted between 2010 and 2018 in SSA. We performed a Poisson regression analysis with robust Standard Errors (SEs) to determine the factors associated with full immunisation status for rural and urban children. Likewise, a multivariate decomposition analysis for non-linear response model was used to examine the contribution of the covariates to the observed rural and urban differential in full childhood immunisation. All analyses were performed using Stata software V.15.0 and associations with a p<0.05 were considered statistically significant.ResultsMore than half of children in urban settings were fully immunised (52.8%) while 59.3% of rural residents were not fully immunised. In all, 76.5% of rural–urban variation in full immunisation was attributable to differences in child and maternal characteristics. Household wealth was an important component contributing to the rural–urban gap. Specifically, richest wealth status substantially accounted for immunisation disparity (35.7%). First and sixth birth orders contributed 7.3% and 14.9%, respectively, towards the disparity while 7.9% of the disparity was attributable to distance to health facility.ConclusionThis study has emphasised the rural–urban disparity in childhood immunisation, with children in the urban settings more likely to complete immunisation. Subregional, national and community-level interventions to obviate this disparity should target children in rural settings, those from poor households and women who have difficulties in accessing healthcare facilities due to distance.

scholarly journals The trend of full vaccination coverage in infants and inequalities by wealth quintile and maternal education: Analysis from four recent Demographic and Health Surveys in Nepal

2019 ◽  
Author(s):  
Kiran Acharya ◽  
Yuba Raj Paudel ◽  
Dinesh Dharel
Keyword(s):  
Vaccination Coverage ◽  
Maternal Education ◽  
Immunization Coverage ◽  
Wealth Quintile ◽  
Educational Status ◽  
Household Wealth ◽  
Demographic And Health Surveys ◽  
Relative Index ◽  
Index Of Inequality ◽  
Over Time

Abstract Background Despite policy intention to reach disadvantaged populations, inequalities in child health care use and health outcomes persist in Nepal. The current study aimed to investigate the trend of full vaccination coverage among infants and its equity gaps between Nepal Demographic and Health Surveys (NDHS) 2001 and 2016.Methods Using data from NDHS conducted in 2001, 2006, 2011 and 2016, we investigated the trend of coverage of six antigens:Bacille Calmette Guerin (BCG), Diptheria, Pertussis, Tetanus (DPT), Polio, and Measles during their infancy among children aged 12-23 months. We presented trends and correlates of vaccination coverage by different socio-demographic factors. We measured inequalities in full vaccination coverage by wealth quintile and maternal education using absolute measure (slope index of inequality) and relative measures (Relative index of inequality, concentration index) of inequalities.Results Full immunization coverage among infants steadily increased from 65.6% in 2001 to 87.0% in 2011; however, it decreased to 77.8% in 2016. Province 2 had a significantly lower full vaccination coverage compared to Province1.Although decreasing over time, there were significant inequalities by household wealth quintiles and maternal educational status. The slope index of inequality (SII) for wealth quintiles decreased from -32.3 [-45.5,-19.1] in 2001 to an SII of-8.4 [-18.6,-1.7] in 2016. Similarly, the SII for education decreased from -61.8 [-73.5,-50.1] in 2001 to an SII of -30.5 [-40.7,-20.2] in 2016. Similarly, the relative index of inequality (RII) also showed an improvement over time, indicating the narrowing equity gap. Additionally, concentration index on full immunization coverage by wealth quintiles dropped from 0.21 (0.12-0.28) in 2001 to 0.054 (-0.01-0.12) in 2016. Absolute and relative inequalities were persistently larger by maternal educational status compared to household wealth quintiles throughout the study period.Conclusion Full vaccination coverage in Nepal increased from 2001 until 2011 but saw a significant decrement away from the national target after 2011. However, the equity gap by household wealth quintile and maternal education status has narrowed over time. National Immunization programs need to give higher emphasis to infants born to mothers with less education, those born in the poorer wealth quintile households, and those living in Province 2.

scholarly journals Correlates of the double burden of malnutrition among women: an analysis of cross sectional survey data from sub-Saharan Africa

BMJ Open ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. e029545 ◽  
Author(s):  
Dickson Abanimi Amugsi ◽  
Zacharie Tsala Dimbuene ◽  
Catherine Kyobutungi
Keyword(s):  
Household Wealth ◽  
Normal Weight ◽  
Overweight And Obesity ◽  
Sub Saharan Africa ◽  
Outcome Variable ◽  
Demographic And Health Surveys ◽  
African Countries ◽  
Double Burden ◽  
Double Burden Of Malnutrition ◽  
Sub Saharan

ObjectiveTo investigate the correlates of the double burden of malnutrition (DBM) among women in five sub-Saharan African countries.DesignSecondary analysis of Demographic and Health Surveys (DHS). The outcome variable was body mass index (BMI), a measure of DBM. The BMI was classified into underweight (BMI <18.50 kg/m2), normal weight (18.50–24.99 kg/m2), overweight (25.0–29.9 kg/m2) and obesity (≥30.0 kg/m2).SettingsGhana, Nigeria, Kenya, Mozambique and Democratic Republic of Congo (DRC).SubjectsWomen aged 15–49 years (n=64698).ResultsCompared with normal weight women, number of years of formal education was associated with the likelihood of being overweight and obese in Ghana, Mozambique and Nigeria, while associated with the likelihood of being underweight in Kenya and Nigeria. Older age was associated with the likelihood of being underweight, overweight and obese in all countries. Positive associations were also observed between living in better-off households and overweight and obesity, while a negative association was observed for underweight. Breastfeeding was associated with less likelihood of underweight in DRC and Nigeria, obesity in DRC and Ghana, overweight in Kenya and overweight and obesity in Mozambique and Nigeria relative to normal weight.ConclusionsOur analysis reveals that in all the countries, women who are breastfeeding are less likely to be underweight, overweight and obese. Education, age and household wealth index tend to associate with a higher likelihood of DBM among women. Interventions to address DBM should take into account the variations in the effects of these correlates.

scholarly journals Hospital delivery and neonatal mortality in 37 countries in sub-Saharan Africa and South Asia: An ecological study

PLoS Medicine ◽  
2021 ◽  
Vol 18 (12) ◽  
pp. e1003843
Author(s):  
Anna D. Gage ◽  
Günther Fink ◽  
John E. Ataguba ◽  
Margaret E. Kruk
Keyword(s):  
South Asia ◽  
Neonatal Mortality ◽  
Ecological Study ◽  
Maternal Education ◽  
Sub Saharan Africa ◽  
Demographic And Health Surveys ◽  
Cross Sectional ◽  
Hospital Delivery ◽  
Sub Saharan ◽  
Facility Births

Background Widespread increases in facility delivery have not substantially reduced neonatal mortality in sub-Saharan Africa and South Asia over the past 2 decades. This may be due to poor quality care available in widely used primary care clinics. In this study, we examine the association between hospital delivery and neonatal mortality. Methods and findings We used an ecological study design to assess cross-sectional associations between the share of hospital delivery and neonatal mortality across country regions. Data were from the Demographic and Health Surveys from 2009 to 2018, covering 682,239 births across all regions. We assess the association between the share of facility births in a region that occurred in hospitals (versus lower-level clinics) and early (0 to 7 days) neonatal mortality per 1,000 births, controlling for potential confounders including the share of facility births, small at birth, maternal age, maternal education, urbanicity, antenatal care visits, income, region, and survey year. We examined changes in this association in different contexts of country income, global region, and urbanicity using interaction models. Across the 1,143 regions from 37 countries in sub-Saharan Africa and South Asia, 42%, 29%, and 28% of births took place in a hospital, clinic, and at home, respectively. A 10-percentage point higher share of facility deliveries occurring in hospitals was associated with 1.2 per 1,000 fewer deaths (p-value < 0.01; 95% CI: 0.82 to 1.60), relative to mean mortality of 22. Associations were strongest in South Asian countries, middle-income countries, and urban regions. The study’s limitations include the inability to control for all confounding factors given the ecological and cross-sectional design and potential misclassification of facility levels in our data. Conclusions Regions with more hospital deliveries than clinic deliveries have reduced neonatal mortality. Increasing delivery in hospitals while improving quality across the health system may help to reduce high neonatal mortality.

scholarly journals Diarrhea and associated factors among under five children in sub-Saharan Africa: Evidence from demographic and health surveys of 34 sub-Saharan countries

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0257522
Author(s):  
Getu Debalkie Demissie ◽  
Yigizie Yeshaw ◽  
Wallelign Aleminew ◽  
Yonas Akalu
Keyword(s):  
Associated Factors ◽  
Maternal Education ◽  
Wealth Index ◽  
Water Source ◽  
Sub Saharan Africa ◽  
Demographic And Health Surveys ◽  
African Countries ◽  
Under Five ◽  
Under Five Children ◽  
Sub Saharan

Introduction Diarrhea is responsible for the death of more than 90% of under-five children in low and lower-middle income countries. Regionally, South Asia and sub-Saharan Africa accounted for 88% of deaths with the same age group. Therefore, the aim of this study was to determine the prevalence and associated factors of diarrhea among children under-five years in sub-Saharan Africa. Methods The appended, most recent demographic and health survey datasets of 34 sub-Saharan African countries were used to determine the prevalence and associated factors of diarrhea among under-five children in the region. A total weighted sample of 330,866 under-five children were included in the study. Both bivariable and multivariable multilevel logistic regression were done to determine the associated factors of diarrhea among under five children in sub-Saharan Africa. The Odds Ratio (OR) with a 95% Confidence Interval (CI) was calculated for those potential factors included in the final model. Result The overall prevalence of diarrhea in this study was 15.3% (95% CI: 15.1–15.4). Those children of mothers aged 15–24 (AOR = 1.26; 95% CI: 1.23, 1.30) and 25–34 years (AOR = 1.15; 95%CI: 1.12, 1.18), those children of mothers with no education (AOR = 1.69; 95%CI: 1.57–1.82), primary education (AOR = 1.73; 95%CI: 1.61–1.86) and secondary education (AOR = 1.49; 95%CI: 1.38–1.59) had higher odds of having diarrhea. Those children from poorest (AOR = 1.14; 95%CI: 1.10, 1.19), poorer (AOR = 1.12; 95%CI: 1.08–1.17), middle (AOR = 1.06; 95%CI: 1.02, 1.10), and richer (AOR = 1.14; 95%CI: 1.04–1.12) households had higher chance of having diarrhea compared to their counterparts. Conclusion This study found that the prevalence of childhood diarrhea morbidity in sub-Saharan Africa was high. Maternal age, wealth index, maternal education, maternal occupation, age of child, time of initiation of breast feeding and time to get water source were significantly associated with diarrhea. Therefore, intervention through health education and health promotion for mothers/caretakers who are poor, less educated, and young should be designed to prevent diarrhea in the region.

scholarly journals Sociodemographic Inequalities in Health Insurance Ownership among Women in Selected Francophone Countries in Sub-Saharan Africa

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Yiting Wang ◽  
Xuhui Wang ◽  
Lu Ji ◽  
Rui Huang
Keyword(s):  
Health Insurance ◽  
Rural Women ◽  
Rural Areas ◽  
Household Wealth ◽  
Access To Healthcare ◽  
Sub Saharan Africa ◽  
Demographic And Health Surveys ◽  
Universal Healthcare ◽  
Explanatory Factors ◽  
Sub Saharan

In sub-Saharan Africa, improving equitable access to healthcare remains a major challenge for public health systems. Health policymakers encourage the adoption of health insurance schemes to promote universal healthcare. Nonetheless, progress towards this goal remains suboptimal due to inequalities health insurance ownership especially among women. In this study, we aimed to explore the sociodemographic factors contributing to health insurance ownership among women in selected francophone countries in sub-Saharan Africa. Methods. This study is based on cross-sectional data obtained from Demographic and Health Surveys on five countries including Benin ( n = 13,407 ), Madagascar ( n = 12,448 ), Mali ( n = 10,326 ), Niger ( n = 12,558 ), and Togo ( n = 6,979 ). The explanatory factors included participant age, marital status, type of residency, education, household wealth quantile, employment stats, and access to electronic media. Associations between health insurance ownership and the explanatory factors were analyzed using multivariate regression analysis, and effect sizes were reported in terms in average marginal effects (AMEs). Results. The highest percentage of insurance ownership was observed for Togo (3.31%), followed by Madagascar (2.23%) and Mali (2.2%). After stratifying by place of residency, the percentages were found to be significantly lower in the rural areas for all countries, with the most noticeable difference observed for Niger (7.73% in urban vs. 0.54% in rural women). Higher levels of education and wealth quantile were positively associated with insurance ownership in all five countries. In the pooled sample, women in the higher education category had higher likelihood of having an insurance: Benin ( AME = 1.18 ; 95% CI = 1.10 , 1.27), Madagascar ( AME = 1.10 ; 95% CI = 1.05 , 1.15), Mali ( AME = 1.14 ; 95% CI = 1.04 , 1.24), Niger ( AME = 1.13 ; 95% CI = 1.07 , 1.21), and Togo ( AME = 1.17 ; 95% CI = 1.09 , 1.26). Regarding wealth status, women from the households in the highest wealth quantile had 4% higher likelihood of having insurance in Benin and Mali and 6% higher likelihood in Madagascar and Togo. Conclusions. Percentage of women who reported having health insurance was noticeably low in all five countries. As indicated by the multivariate analyses, the actual situation is likely to be even worse due to significant socioeconomic inequalities in the distribution of women having an insurance plan. Increasing women’s access to healthcare is an urgent priority for population health promotion in these countries, and therefore, addressing the entrenched sociodemographic disparities should be given urgent policy attention in an effort to strengthen universal healthcare-related goals.

scholarly journals Ambient Air Pollution and Respiratory Health in Sub-Saharan African Children: A Cross-Sectional Analysis

2021 ◽  
Vol 18 (18) ◽  
pp. 9729
Author(s):  
Yutong Cai ◽  
Harry Gibson ◽  
Rema Ramakrishnan ◽  
Mohammad Mamouei ◽  
Kazem Rahimi
Keyword(s):  
Air Pollution ◽  
Respiratory Health ◽  
Ambient Air ◽  
Household Wealth ◽  
Sub Saharan Africa ◽  
Ambient Air Pollution ◽  
Demographic And Health Surveys ◽  
Acute Lower Respiratory Infection ◽  
Cross Sectional ◽  
Sub Saharan

Ambient air pollution is projected to become a major environmental risk in sub-Saharan Africa (SSA). Research into its health impacts is hindered by limited data. We aimed to investigate the cross-sectional relationship between particulate matter with a diameter ≤ 2.5 μm (PM2.5) and prevalence of cough or acute lower respiratory infection (ALRI) among children under five in SSA. Data were collected from 31 Demographic and Health Surveys (DHS) in 21 SSA countries between 2005–2018. Prior-month average PM2.5 preceding the survey date was assessed based on satellite measurements and a chemical transport model. Cough and ALRI in the past two weeks were derived from questionnaires. Associations were analysed using conditional logistic regression within each survey cluster, adjusting for child’s age, sex, birth size, household wealth, maternal education, maternal age and month of the interview. Survey-specific odds ratios (ORs) were pooled using random-effect meta-analysis. Included were 368,366 and 109,664 children for the analysis of cough and ALRI, respectively. On average, 20.5% children had reported a cough, 6.4% reported ALRI, and 32% of children lived in urban areas. Prior-month average PM2.5 ranged from 8.9 to 64.6 μg/m3. Pooling all surveys, no associations were observed with either outcome in the overall populations. Among countries with medium-to-high Human Development Index, positive associations were observed with both cough (pooled OR: 1.022, 95%CI: 0.982–1.064) and ALRI (pooled OR: 1.018, 95%CI: 0.975–1.064) for 1 μg/m3 higher of PM2.5. This explorative study found no associations between short-term ambient PM2.5 and respiratory health among young SSA children, necessitating future analyses using better-defined exposure and health metrics to study this important link.

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