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ORIGINAL ARTICLE
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Current status of malaria elimination in Koraput district of Odisha, India


1 Indian Council of Medical Research-Vector Control Research Centre, Medical Complex, Indira Nagar, Puducherry, India
2 Chief District Medical Office, Koraput, Govt. of Odisha, India

Correspondence Address:
Sudhansu Sekhar Sahu,
ICMR-Vector Control Research Centre, Medical Complex, Indira Nagar, Puducherry,605006
India
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-9062.325644

Background & objectives: After launching of NFME and NSP with wide scale implementation of effective intervention tools during 2017, Odisha State of India observed a drastic reduction of malaria cases (81%) in 2018 and 88.6% in 2019, compared to 2017. The current study analysed the different factors causative for malaria reduction in Koraput district of Odisha State, India. Methods: The vector density and malaria incidences were assessed from January 2016 to December 2019 and human blood index, bio-efficacy and use rate of LLINs were assessed after distribution of long-lasting insecticidal nets. Results: The use rate of LLINs by the villagers ranged from 93.8% to 100% throughout the year. The mortality of Anopheles jeyporiensis remained 100.0% in both DuraNet and PermaNet LNs. The density of An. fluviatilis after distribution of LLINs reduced from 4.7 to 0.0 whereas, the density of An. culicifacies reduced from 12.2 to 9.3. The HBI of An. fluviatilis and An. culicifacies was 0.006 and 0.005, respectively after distribution of LLINs. The malaria incidences also drop from 14.2 to zero after distribution. Interpretation & conclusion: A significant reduction in malaria incidences was validated and the possible reasons for the reduction are discussed.


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