Use of Iris Scanning for Biometric Recognition of Healthy Adults Participating in an Ebola Vaccine Trial in the Democratic Republic of the Congo: Mixed Methods Study.

BACKGROUND: A partnership between the University of Antwerp and the University of Kinshasa implemented the EBOVAC3 clinical trial with an Ebola vaccine regimen administered to health care provider participants in Tshuapa Province, Democratic Republic of the Congo. This randomized controlled trial was part of an Ebola outbreak preparedness initiative financed through Innovative Medicines Initiative-European Union. The EBOVAC3 clinical trial used iris scan technology to identify all health care provider participants enrolled in the vaccine trial, to ensure that the right participant received the right vaccine at the right visit. OBJECTIVE: We aimed to assess the acceptability, accuracy, and feasibility of iris scan technology as an identification method within a population of health care provider participants in a vaccine trial in a remote setting. METHODS: We used a mixed methods study. The acceptability was assessed prior to the trial through 12 focus group discussions (FGDs) and was assessed at enrollment. Feasibility and accuracy research was conducted using a longitudinal trial study design, where iris scanning was compared with the unique study ID card to identify health care provider participants at enrollment and at their follow-up visits. RESULTS: During the FGDs, health care provider participants were mainly concerned about the iris scan technology causing physical problems to their eyes or exposing them to spiritual problems through sorcery. However, 99% (85/86; 95% CI 97.1-100.0) of health care provider participants in the FGDs agreed to be identified by the iris scan. Also, at enrollment, 99.0% (692/699; 95% CI 98.2-99.7) of health care provider participants accepted to be identified by iris scan. Iris scan technology correctly identified 93.1% (636/683; 95% CI 91.2-95.0) of the participants returning for scheduled follow-up visits. The iris scanning operation lasted 2 minutes or less for 96.0% (656/683; 95% CI 94.6-97.5), and 1 attempt was enough to identify the majority of study participants (475/683, 69.5%; 95% CI 66.1-73.0). CONCLUSIONS: Iris scans are highly acceptable as an identification tool in a clinical trial for health care provider participants in a remote setting. Its operationalization during the trial demonstrated a high level of accuracy that can reliably identify individuals. Iris scanning is found to be feasible in clinical trials but requires a trained operator to reduce the duration and the number of attempts to identify a participant. TRIAL REGISTRATION: ClinicalTrials.gov NCT04186000; https://clinicaltrials.gov/ct2/show/NCT04186000.

Effect of Family Planning Counseling After Delivery on Contraceptive Use at 24 Weeks Postpartum in Kinshasa, Democratic Republic of Congo.

Introduction Unintended pregnancy during the postpartum period is common. The aim of this study was to describe contraceptive use among postpartum women and assess whether family planning counseling offered by health care providers during well-baby clinic visits increased use of modern contraceptive methods at 6 months following delivery. Methods Data comes from a cohort of women enrolled in a breastfeeding promotion trial in Kinshasa, Democratic Republic of Congo who reported being sexually active at 24-weeks post-partum. Modern contraceptive methods included intrauterine devices, injectables, implants, and contraception pills. Logistic regression models were used to estimate odd ratios (OR) and 95% confidence intervals (CI) for the impact of nurse counseling on use of modern birth control methods. Results Of 522 participants who reported being sexually active, 251 (48.0%) reported doing at least one thing to avoid pregnancy and were included in this analysis. Of these 251, 14.3% were using a modern contraceptive method, despite availability at the clinic. Discussion with a nurse about family planning was associated with increased odds of using modern birth control relative to other methods (OR 4.0, 95% CI 1.9, 8.6). Discussion Discussion of family planning with a nurse increased the odds of using a modern contraceptive among postpartum women. Integration of family planning counseling into postpartum services offers a potential avenue to increase modern contraceptive use among women with access.

Implementation of Steps 1-9 to Successful Breastfeeding Reduces the Frequency of Mild and Severe Episodes of Diarrhea and Respiratory Tract Infection Among 0-6 Month Infants in Democratic Republic of Congo.

INTRODUCTION: Global initiatives to improve breastfeeding practices have focused on the Ten Steps to Successful Breastfeeding. The aim of this study was to assess the effect of implementing Baby-Friendly Hospital Initiative (BFHI) steps 1-9 and BFHI steps 1-10 on incidence of diarrhea and respiratory illnesses in the first 6 months of life. METHODS: We reanalyzed a cluster randomized trial in which health-care clinics in Kinshasa, Democratic Republic of Congo, were randomly assigned to standard care (control group), BFHI steps 1-9, or BFHI steps 1-10. Outcomes included episodes of diarrhea and respiratory illness. Piecewise Poisson regression with generalized estimation equations to account for clustering by clinic was used to estimate incidence rate ratios (IRR) and 95% confidence intervals (CI). RESULTS: Steps 1-9 was associated with a decreased incidence of reported diarrhea (IRR 0.72, 95% CI 0.53, 0.99) and respiratory illness (IRR 0.48, 95% CI 0.37, 0.63), health facility visits due to diarrhea (IRR 0.60, 95% CI 0.42, 0.85) and respiratory illness (IRR 0.47, 95% CI 0.36, 0.63), and hospitalizations due to diarrhea (IRR 0.42, 95% CI 0.17, 1.06) and respiratory illness (IRR 0.33, 95% CI 0.11, 0.98). Addition of Step 10 attenuated this effect: episodes of reported diarrhea (IRR 1.24, 95% CI 0.93, 1.68) and respiratory illness (IRR 0.77, 95% CI 0.60, 0.99), health facility visits due to diarrhea (IRR 0.76, 95% CI 0.54, 1.08) and respiratory illness (IRR 0.75 95% CI 0.57, 0.97), and hospitalizations due to respiratory illness (IRR 0.48 95% CI 0.16, 1.40); but strengthened the effect against hospitalizations due to diarrhea (IRR 0.14, 95% CI 0.03, 0.60). CONCLUSIONS: Implementation of steps 1-9 significantly reduced incidence of mild and severe episodes of diarrhea and respiratory infection in the first 6 months of life, addition of step 10 appeared to lessen this effect. TRIAL REGISTRATION: NCT01428232.

Vaccination Coverage and Timelines Among Children 0-6 Months in Kinshasa, the Democratic Republic of Congo: A Prospective Cohort Study.

Objectives The Democratic Republic of Congo (DR Congo) is one of the ten countries, which accounts for 60% of unvaccinated children worldwide. The aim of this study was to assess predictors of incomplete and untimely immunization among a cohort of infants recruited at birth and followed up through 24 weeks in Kinshasa. Methods Complete immunization for each vaccine was defined as receiving all the recommended doses. Untimely immunization was defined as receiving the given dose before (early) or after (delayed) the recommended time window. Infants not immunized by the end of the follow-up time were considered missing. Multivariate hierarchical model and generalized logistic model were used to assess the independent contribution of each socio-economic and demographic factors considered to complete immunization and timeliness, respectively. Results Overall, of 975 infants from six selected clinics included in the analysis 84.7% were fully immunized the three doses of DTP or four doses of Polio by 24 weeks of age. Independently of the vaccine considered, the strongest predictor of incomplete and untimely immunization was the clinic in which the infant was enrolled. This association was strengthened after adjustment for socio-economic and demographic characteristics. Education and the socio-economic status also were predictive of completion and timeliness of immunization in our cohort. Discussion In conclusion, the strongest predictor for incomplete and untimely immunization among infants in Kinshasa was the clinics in which they were enrolled. The association was likely due to the user fee for well-baby clinic visits and its varying structure by clinic.

Sociocultural determinants of anticipated oral cholera vaccine acceptance in three African settings: a meta-analytic approach.

BACKGROUND: Controlling cholera remains a significant challenge in Sub-Saharan Africa. In areas where access to safe water and sanitation are limited, oral cholera vaccine (OCV) can save lives. Establishment of a global stockpile for OCV reflects increasing priority for use of cholera vaccines in endemic settings. Community acceptance of vaccines, however, is critical and sociocultural features of acceptance require attention for effective implementation. This study identifies and compares sociocultural determinants of anticipated OCV acceptance across populations in Southeastern Democratic Republic of Congo, Western Kenya and Zanzibar. METHODS: Cross-sectional studies were conducted using similar but locally-adapted semistructured interviews among 1095 respondents in three African settings. Logistic regression models identified sociocultural determinants of OCV acceptance from these studies in endemic areas of Southeastern Democratic Republic of Congo (SE-DRC), Western Kenya (W-Kenya) and Zanzibar. Meta-analytic techniques highlighted common and distinctive determinants in the three settings. RESULTS: Anticipated OCV acceptance was high in all settings. More than 93% of community respondents overall indicated interest in a no-cost vaccine. Higher anticipated acceptance was observed in areas with less access to public health facilities. In all settings awareness of cholera prevention methods (safe food consumption and garbage disposal) and relating ingestion to cholera causation were associated with greater acceptance. Higher age, larger households, lack of education, social vulnerability and knowledge of oral rehydration solution for self-treatment were negatively associated with anticipated OCV acceptance. Setting-specific determinants of acceptance included reporting a reliable income (W-Kenya and Zanzibar, not SE-DRC). In SE-DRC, intention to purchase an OCV appeared unrelated to ability to pay. Rural residents were less likely than urban counterparts to accept an OCV in W-Kenya, but more likely in Zanzibar. Prayer as a form of self-treatment was associated with vaccine acceptance in SE-DRC and W-Kenya, but not in Zanzibar. CONCLUSIONS: These cholera-endemic African communities are especially interested in no-cost OCVs. Health education and attention to local social and cultural features of cholera and vaccines would likely increase vaccine coverage. High demand and absence of insurmountable sociocultural barriers to vaccination with OCVs indicate potential for mass vaccination in planning for comprehensive control or elimination.

Comparing sociocultural features of cholera in three endemic African settings.

BACKGROUND: Cholera mainly affects developing countries where safe water supply and sanitation infrastructure are often rudimentary. Sub-Saharan Africa is a cholera hotspot. Effective cholera control requires not only a professional assessment, but also consideration of community-based priorities. The present work compares local sociocultural features of endemic cholera in urban and rural sites from three field studies in southeastern Democratic Republic of Congo (SE-DRC), western Kenya and Zanzibar. METHODS: A vignette-based semistructured interview was used in 2008 in Zanzibar to study sociocultural features of cholera-related illness among 356 men and women from urban and rural communities. Similar cross-sectional surveys were performed in western Kenya (n = 379) and in SE-DRC (n = 360) in 2010. Systematic comparison across all settings considered the following domains: illness identification; perceived seriousness, potential fatality and past household episodes; illness-related experience; meaning; knowledge of prevention; help-seeking behavior; and perceived vulnerability. RESULTS: Cholera is well known in all three settings and is understood to have a significant impact on people's lives. Its social impact was mainly characterized by financial concerns. Problems with unsafe water, sanitation and dirty environments were the most common perceived causes across settings; nonetheless, non-biomedical explanations were widespread in rural areas of SE-DRC and Zanzibar. Safe food and water and vaccines were prioritized for prevention in SE-DRC. Safe water was prioritized in western Kenya along with sanitation and health education. The latter two were also prioritized in Zanzibar. Use of oral rehydration solutions and rehydration was a top priority everywhere; healthcare facilities were universally reported as a primary source of help. Respondents in SE-DRC and Zanzibar reported cholera as affecting almost everybody without differentiating much for gender, age and class. In contrast, in western Kenya, gender differentiation was pronounced, and children and the poor were regarded as most vulnerable to cholera. CONCLUSIONS: This comprehensive review identified common and distinctive features of local understandings of cholera. Classical treatment (that is, rehydration) was highlighted as a priority for control in the three African study settings and is likely to be identified in the region beyond. Findings indicate the value of insight from community studies to guide local program planning for cholera control and elimination.

Local perceptions of cholera and anticipated vaccine acceptance in Katanga province, Democratic Republic of Congo.

BACKGROUND: In regions where access to clean water and the provision of a sanitary infrastructure has not been sustainable, cholera continues to pose an important public health burden. Although oral cholera vaccines (OCV) are effective means to complement classical cholera control efforts, still relatively little is known about their acceptability in targeted communities. Clarification of vaccine acceptability prior to the introduction of a new vaccine provides important information for future policy and planning. METHODS: In a cross-sectional study in Katanga province, Democratic Republic of Congo (DRC), local perceptions of cholera and anticipated acceptance of an OCV were investigated. A random sample of 360 unaffected adults from a rural town and a remote fishing island was interviewed in 2010. In-depth interviews with a purposive sample of key informants and focus-group discussions provided contextual information. Socio-cultural determinants of anticipated OCV acceptance were assessed with logistic regression. RESULTS: Most respondents perceived contaminated water (63%) and food (61%) as main causes of cholera. Vaccines (28%), health education (18%) and the provision of clean water (15%) were considered the most effective measures of cholera control. Anticipated vaccine acceptance reached 97% if an OCV would be provided for free. Cholera-specific knowledge of hygiene and self-help in form of praying for healing were positively associated with anticipated OCV acceptance if costs of USD 5 were assumed. Conversely, respondents who feared negative social implications of cholera were less likely to anticipate acceptance of OCVs. These fears were especially prominent among respondents who generated their income through fishing. With an increase of assumed costs to USD 10.5, fear of financial constraints was negatively associated with anticipated vaccine acceptance as well. CONCLUSIONS: Results suggest a high motivation to use an OCV as long as it seems affordable. The needs of socially marginalized groups such as fishermen may have to be explicitly addressed when preparing for a mass vaccination campaign.

[The perceptions of adolescents and young people of sexual and reproductive health in the Democratic Republic of Congo]. / Perception des adolescents et jeunes en matière de santé sexuelle et reproductive, République Démocratique du Congo.

Adolescents and young people have specific concerns about issues related to sexual and reproductive health. The purpose of this study, conducted in an urban setting of the DRC, was to identify the needs and perceptions of adolescents and young people in the area of sexual and reproductive health with a view to informing policy. This paper presents the results of a qualitative study using focus groups conducted in three cities of the DRC (Kinshasa, Goma and Matadi). The study focused on adolescents and young people of both sexes and from different social classes from the following age groups: 10-14, 15-19 and 20-24. Among the female participants, the results highlight the need for information on the menstrual cycle and sexual experiences, while the male participants identified masturbation and sexual performance as their main concern. The study also found that emotional relationships and sexuality can help to solve sentimental and material problems not usually addressed within the family. The participants also emphasized the need for sex education, although they insisted on the importance of confidentiality. The results also suggest that adolescents and young people prefer to communicate with medical personnel, religious leaders, and teachers rather than their parents. The media were found to be the main source of information about sexual and reproductive health. However, there also appears to be a need for interpersonal communication. In addition, the results indicate that health services are considered a secondary option after self-medication and traditional treatments, which are seen as more accessible. In the DRC, programs targeting adolescents and young people have been developed to meet current needs and improve provision.

Exclusive Breastfeeding and Clinical Malaria Risk in 6-Month-Old Infants: A Cross-Sectional Study from Kinshasa, Democratic Republic of the Congo.

The World Health Organization recommends exclusive breastfeeding (EBF) for the first 6 months of life. However, the effect of EBF on malaria risk remains unclear. In the present study, 137 EBF infants and 358 non-EBF infants from the Democratic Republic of the Congo were assessed for fever and malaria infections by polymerase chain reaction, at 6 months of age. EBF was associated with a reduced risk of clinical malaria (odds ratio = 0.13; 95% confidence interval = 0.00-0.80), suggesting a protective effect of EBF against malaria.

Ten Steps to Successful Breastfeeding programme to promote early initiation and exclusive breastfeeding in DR Congo: a cluster-randomised controlled trial.

BACKGROUND: Optimisation of breastfeeding practices could reduce high mortality rates in children younger than 5 years, but in DR Congo, despite near-universal breastfeeding initiation and nine of ten children still breastfeeding at 1 year of age, exclusivity remains a difficulty. We assessed the effect on breastfeeding outcomes of a short-cut implementation of a programme called the Ten Steps to Successful Breastfeeding, the key component of the Baby-Friendly Hospital Initiative (BFHI). METHODS: We did a cluster-randomised controlled trial and randomly assigned health-care clinics in Kinshasa, DR Congo, to standard care (control group), BFHI steps 1-9 (steps 1-9 group), or BFHI steps 1-9 plus additional support during well-child visits (steps 1-10 group) with computer-generated random numbers used to assign matched pairs to study groups. Mothers at these clinics who had given birth to one healthy baby during enrolment, and who expressed their intentions of visiting a well-baby session at the same clinic, were eligible and received the treatment assigned to their clinic. Mother-infant pairs were excluded if the mothers intended to attend well-baby clinic visits at a different health facility, or to travel before the child was aged at least 6 months. Participants and independent interviewers were masked to group assignment (ie, they were recruited after randomisaion and training of the clinic staff and were not informed of the study scheme), but clinical staff were unmasked. BFHI steps 1-9 and 1-10 were given by health-care staff trained with the WHO/UNICEF BFHI course. The primary outcomes were breastfeeding initiation within 1 h of birth and exclusive breastfeeding at age 14 and 24 weeks, assessed at face-to-face interviews in the clinic. Analysis was by intention to treat. Prevalence ratios (PR) were adjusted for cluster effects and baseline characteristics. This trial is registered at ClinicalTrials.gov, number NCT01428232, and is closed to new participants. FINDINGS: Between May 24, and Aug 25, 2012, we randomly assigned two eligible clinics to control, two to BFHI steps 1-9, and two to BFHI steps 1-10. We enrolled 975 eligible mother-infant pairs (304 in the control group, 363 in the steps 1-9 group, and 308 in the steps 1-10 group). 230 (76%) of infants in the control group, 263 (72%) in the steps 1-9 group, and 220 (71%) in the steps 1-10 group were breastfed within 1 h of birth; these results did not differ significantly between groups. Prevalence of exclusive breastfeeding at age 14 weeks was 89 (29%) in the control group, 237 (65%) in the steps 1-9 group (adjusted PR 2·20, 95% CI 1·73-2·77), and 129 (42%) in the steps 1-10 group (1·40, 1·13-1·74). At age 24 weeks, the prevalence of exclusive breastfeeding was 36 (12%) in the control group, 131 (36%) in the steps 1-9 group (3·50, 2·76-4·43), and 43 (14%) in the steps 1-10 group (1·31, 0·91-1·89). INTERPRETATION: In the setting of health-care clinics in DR Congo with a high proportion of mothers initiating breastfeeding, implementation of basic training in BFHI steps 1-9 had no additional effect on initiation of breastfeeding but significantly increased exclusive breastfeeding at 6 months of age. Additional support based on the same training materials and locally available breastfeeding support materials, offered during well-child visits (ie, step 10) did not enhance this effect, and might have actually lessened it.

Sociocultural determinants of anticipated vaccine acceptance for acute watery diarrhea in early childhood in Katanga Province, Democratic Republic of Congo.

Rotavirus and oral cholera vaccines have the potential to reduce diarrhea-related child mortality in low-income settings and are recommended by the World Health Organization. Uptake of vaccination depends on community support, and is based on local priorities. This study investigates local perceptions of acute watery diarrhea in childhood and anticipated vaccine acceptance in two sites in the Democratic Republic of Congo. In 2010, 360 randomly selected non-affected adults were interviewed by using a semi-structured questionnaire. Witchcraft and breastfeeding were perceived as potential cause of acute watery diarrhea by 51% and 48% of respondents. Despite misperceptions, anticipated vaccine acceptance at no cost was 99%. The strongest predictor of anticipated vaccine acceptance if costs were assumed was the educational level of the respondents. Results suggest that the introduction of vaccines is a local priority and local (mis)perceptions of illness do not compromise vaccine acceptability if the vaccine is affordable.