Browsing Vaccination by Authors
Feasibility of a preventive mass vaccination campaign with two doses of oral cholera vaccine during a humanitarian emergency in South SudanPorta, M I; Lenglet, A; de Weerdt, S; Crestani, R; Sinke, R; Jo Frawley, M; Van Herp, M; Zachariah, R (Oxford University Press, 2014-10-13)As an adjunct to cholera prevention measures, WHO advises the use of oral cholera vaccine through mass vaccination campaigns in high-risk areas and for vulnerable population groups. We assessed the feasibility and acceptability of a mass vaccination campaign using 1) a predominantly fixed and 2) a mobile door-to-door strategy.
Infectious Disease Risk and Vaccination in Northern Syria after 5 Years of Civil War: The MSF Experiencede Lima Pereira, A; Southgate, R; Ahmed, H; O'Connor, P; Cramond, V; Lenglet, A (Public Library of Science, 2018-02-02)In 2015, following an influx of population into Kobanê in northern Syria, Médecins Sans Frontières (MSF) in collaboration with the Kobanê Health Administration (KHA) initiated primary healthcare activities. A vaccination coverage survey and vaccine-preventable disease (VPD) risk analysis were undertaken to clarify the VPD risk and vaccination needs. This was followed by a measles Supplementary Immunization Activity (SIA). We describe the methods and results used for this prioritisation activity around vaccination in Kobanê in 2015.
Measles vaccination coverage survey in Moba, Katanga, Democratic Republic of Congo, 2013: need to adapt routine and mass vaccination campaigns to reach the unreachedGil Cuesta, J; Mukembe, N; Valentiner-Branth, P; Stefanoff, P; Lenglet, A (Public Library of Science, 2015-02-02)The Democratic Republic of Congo (DRC) has committed to eliminate measles by 2020. In 2013, in response to a large outbreak, Médecins Sans Frontières conducted a mass vaccination campaign (MVC) in Moba, Katanga, DRC. We estimated the measles vaccination coverage for the MVC, the Expanded Programme on Immunization routine measles vaccination (EPI) and assessed reasons for non-vaccination. We conducted a household-based survey among caretakers of children aged 6 months-15 years in Moba from November to December 2013. We used a two-stage-cluster-sampling, where clusters were allocated proportionally to village size and households were randomly selected from each cluster. The questionnaire included demographic variables, vaccination status (card or oral history) during MVC and EPI and reasons for non-vaccination. We estimated the coverage by gender, age and the reasons for non-vaccination and calculated 95% confidence intervals (95% CI). We recruited 4,768 children living in 1,684 households. The MVC coverage by vaccination card and oral history was 87% (95% CI 84-90) and 66% (95% CI 61-70) if documented by card. The EPI coverage was 76% (95% CI 72-81) and 3% (95% CI 1-4) respectively. The MVC coverage was significantly higher among children previously vaccinated during EPI 91% (95% CI 88-93), compared to 74% (95% CI 66-80) among those not previously vaccinated. Six percent (n=317) of children were never vaccinated. The main reason for non-vaccination was family absence 68% (95% CI 58-78). The MVC and EPI measles coverage was insufficient to prevent the recurrence of outbreaks in Moba. Lack of EPI vaccination and lack of accessibility by road were associated with lower MVC coverage. We recommend intensified social mobilization and extended EPI and MVCs to increase the coverage of absent residents and unreached children. Routine and MVCs need to be adapted accordingly to improve coverage in hard-to-reach populations in DRC.