Vaccine: X · 2024
Oral cholera vaccine coverage in Goma, Democratic Republic of the Congo, 2022, following 2019-2020 targeted preventative mass campaigns.
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Briskin Emily, Bateyi Mustafa Stéphane Hans, Mahamba Rachel, Kabunga Deka, Kubuya Janvier, Porten Klaudia, Epicentre-MSF DRC cholera working group, Akilimali Laurent, Okitayemba Welo Placide, Broban Anaïs
Аннотация
BACKGROUND: In 2019-2020, preventative Oral Cholera Vaccine campaigns were conducted in 24/32 non-contiguous health areas of Goma, DR Congo. In August 2022, we measured coverage and factors potentially influencing success of the delivery strategy.
METHODS: We used random geo-sampled stratified cluster survey to estimate OCV coverage and assess population movement, diarrhea history, and reasons for non-vaccination.
RESULTS: 603 households were visited. Coverage with at least one dose was 46.4 % (95 %CI: 41.8-51.0), and 50.1 % (95 %CI: 45.4-54.8) in areas targeted by vaccination compared to 26.3 % (95 %CI: 19.2-34.9) in non-targeted areas. Additionally, 7.0 % of participants reported moving from outside Goma since 2019, and 5.4 % reported history of severe diarrhea. Absence and unawareness were the main reasons for non-vaccination.
CONCLUSION: Results suggest that targeting non-contiguous urban areas had a coverage-diluting effect. Targeting entire geographically contiguous areas, adapted distribution, and regular catch-up campaigns are operational recommendations to reach higher coverages arising from the study.
METHODS: We used random geo-sampled stratified cluster survey to estimate OCV coverage and assess population movement, diarrhea history, and reasons for non-vaccination.
RESULTS: 603 households were visited. Coverage with at least one dose was 46.4 % (95 %CI: 41.8-51.0), and 50.1 % (95 %CI: 45.4-54.8) in areas targeted by vaccination compared to 26.3 % (95 %CI: 19.2-34.9) in non-targeted areas. Additionally, 7.0 % of participants reported moving from outside Goma since 2019, and 5.4 % reported history of severe diarrhea. Absence and unawareness were the main reasons for non-vaccination.
CONCLUSION: Results suggest that targeting non-contiguous urban areas had a coverage-diluting effect. Targeting entire geographically contiguous areas, adapted distribution, and regular catch-up campaigns are operational recommendations to reach higher coverages arising from the study.