This abstract has been accepted at the 2024 DHIS2 Annual Conference
Impact of Climate-induced Flooding on Childhood Vaccination in Two Nigerian States. A Retrospective Analysis of DHIS2 Vaccination Coverage Data.
Background Climate-induced flooding significantly impacts the provision and access to health care services including vaccination and may increase the susceptibility of children to vaccine-preventable diseases. This study aims to determine the impact of flooding on the coverage of 3 antigens – Penta , IPV, and measles among children. Methods This was a retrospective descriptive study conducted to determine the impact of flooding on vaccination coverage in Bayelsa and Delta states using vaccination data on DHIS2. The data was accessed on 15th January 2023. Months of flooding across states were determined using information available from the Nigerian Meteorological Agency (NiMet). Vaccination coverage for Penta 1, Penta 3 and Measles and IPV 1 and IPV 2 antigens were assessed for pre-flooding (August and September 2022), flooding (October and November 2022), and post-flooding (December 2022 and January 2023) periods. Data was analyzed for descriptive statistics using SPSS version 23. Results The percentage decline in vaccination rates during flooding months was 31%, 35%, 32%, 34%, and 37% for the same antigens in Bayelsa state while the percentage vaccination rate for these antigens in Delta state was 28%, 31%, 11%, 14%, and 9%. Post flooding, vaccination rates increased by 50% (Penta 1), 50% (Penta 2), 59% (Measles),50% (IPV1), and 59% (IPV 2) in Bayelsa state and 37% (Penta 1),40% (Penta 2), 79% (Measles), 18% (IPV 1) and 2% (IPV 2). During the months of flooding, the estimated number of children who did not receive lifesaving vaccines was 12,359 (Penta 1), 11,866 (Penta 2), 13,462 (Measles), 11,809 (IPV 1), and 13,417 (IPV 2) in Bayelsa state and 22,066 (Penta 1), 19,018 (Penta 2), 16,052 (Measles) 16,138 (IPV1) and 29,011 (IPV 2) for Delta state. Conclusion. Climate-induced flooding significantly impacts access to health care services, including vaccination for children. The DHIS2 platform can serve as a dependable reference for historical data on the impact of climate events on healthcare service delivery and outcomes. This can be a veritable strategy for disaster preparedness to mitigate the impact of disastrous climate-related events.
Primary Author: Sorbari Igbiri
Keywords:
Climate, flooding, DHIS2, vaccination coverage
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