A Preliminary Assessment of Rotavirus Vaccine Effectiveness in Zambia

BACKGROUND: Diarrhea is the third leading cause of child death in Zambia. Up to one-third of diarrhea cases resulting in hospitalization and/or death are caused by vaccine-preventable rotavirus. In January 2012, Zambia initiated a pilot introduction of the Rotarix live, oral rotavirus vaccine in all public health facilities in Lusaka Province. METHODS: Between July 2012 and October 2013, we conducted a case-control study at 6 public sector sites to estimate rotavirus vaccine effectiveness (VE) in age-eligible children presenting with diarrhea. We computed the odds of having received at least 1 dose of Rotarix among children whose stool was positive for rotavirus antigen (cases) and children whose stool was negative (controls). We adjusted the resulting odds ratio (OR) for patient age, calendar month of presentation, and clinical site, and expressed VE as (1 - adjusted OR) × 100. RESULTS: A total of 91 rotavirus-positive cases and 298 rotavirus-negative controls who had under-5 card-confirmed vaccination status and were ≥6 months of age were included in the case-control analysis. Among rotavirus-positive children who were age-eligible to be vaccinated, 20% were hospitalized. Against rotavirus diarrhea of all severity, the adjusted 2-dose VE was 26% (95% confidence interval [CI], -30% to 58%) among children ≥6 months of age. VE against hospitalized children ≥6 months of age was 56% (95% CI, -34% to 86%). CONCLUSIONS: We observed a higher point estimate for VE against increased severity of illness compared with milder disease, but were not powered to detect a low level of VE against milder disease

Alcohol and other drug use patterns and services in an integrated refugee settlement in Northern Zambia: a formative research study

Abstract Background Evidence on patterns of alcohol and other drug (AOD) use and how to effectively deliver services to address AOD use in humanitarian settings is limited. This study aimed to qualitatively explore the patterns of AOD use among Congolese refugees in Mantapala Refugee Settlement and members of the surrounding host community and identify potential appropriate intervention and implementation approaches to address AOD use disorders among conflict-affected populations. Methods Fifty free listing interviews, 25 key informant interviews, and four focus group discussions were conducted among refugees, host community members, humanitarian implementing agency staff, and refugee incentive workers. These participants were selected based on their knowledge of AOD use and related problems in the settlement and the surrounding host community in northern Zambia. Results Cannabis and home-brewed alcohol were the substances that were perceived to be most commonly used and have the greatest impact on the community. Participants reported that self-medication, boredom, and relief of daily stressors associated with lack of housing, safety, and employment were reasons that people used AODs. Participants recommended that programming include components to address the underlying causes of AOD use, such as livelihood activities. Stigma due to the criminalization of and societal ideals and religious beliefs regarding AOD use was identified as a substantial barrier to accessing and seeking treatment. Conclusions Our study’s findings indicate the need for services to address AOD use in Mantapala Refugee Settlement. Interventions should consider the social and structural determinants of AOD use