ArticleTransactions of the Royal Society of Tropical Medicine and Hygiene2025
Epidemiology of malaria in Chhattisgarh, India: a surveillance data analysis, 2015-2023.
Article in Transactions of the Royal Society of Tropical Medicine and Hygiene, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundIndia accounts for two-thirds of the malaria burden in Southeast Asia. We described the lab-confirmed malaria cases under the Integrated Disease Surveillance Programme in Chhattisgarh, India, from 2015 to 2023.
methodsWe conducted a surveillance data analysis by abstracting the lab-confirmed malaria cases from five regions of Chhattisgarh from January 2015 to December 2023. We estimated the annual parasite incidence (API) by region and year. We estimated the incidence rate ratio (IRR) with a 95% CI over the years using a generalized estimating equation in Stata 16.0.
resultsA total of 391 387 malaria cases were reported from 2015 to 2023. API ranged from 0.4-3.2 per 1000 population with an annual decline of 25% (IRR:0.75; 95% CI 0.71 to 0.79). Cases peaked in July (monsoon season) and November. Incidence was consistently higher in Chhattisgarh's Bastar (IRR:12.5; 95% CI 3.7 to 43.0) and Surguja regions (IRR:7.4; 95% CI 2.0 to 27.4) compared with the central region.
conclusionsSouthern districts of Chhattisgarh consistently documented increased incidence over the years. We recommend strengthening the implementation of the vector control measures starting in May. Further research should be conducted to identify the reasons for the high malaria incidence in southern Chhattisgarh.
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