MSPTM 2019 Annual Scientific Conference
13 - 14 March 2019
InterContinental Kuala Lumpur

Abstract

Title

HIGH MALARIA TRANSMISSION IN AREA OF HIGH INTERVENTION IN A VILLAGE OF KALAHANDI DISTRICT, ODISHA, INDIA

Type
Oral Presentation
Theme
Scaling Up Efforts in Tropical Disease and Vector Control through Evidence-Based Research
Topic
Medical & Forensic Entomology

Authors

Main Author
Barsa Baisalini Panda1
Presenting Author
Barsa Baisalini Panda1
Co-Author
Dr Rupenangshu Kumar Hazra1

Authors' Institution

Department / Institution / Country
Medical Entomology / ICMR-Regional Medical Research Centre, Bhubaneswar, Odisha, India / India1
Content
Abstract Content

In Odisha, India vector control is the principal strategy to reduce the burden of malaria. To assess the impact of intervention and the intensity of malaria transmission entomological parameters such as vector density, sporozoite rate (SR) and entomological inoculation rate (EIR) are used. The susceptibility of malaria vectors also determines the effectiveness of insecticides based vector control tools. Hence, the aim of the study was to assess the entomological parameters and insecticide susceptibility status of malaria vectors in a high malaria transmission area where intervention coverage was also high. 30 houses were randomly selected in Kukurbhursi village to sample Anopheles mosquitoes from June 2017 to January 2019. Sporozoite of Anopheles fluviatilis, Anopheles culicifacies and Anopheles minimus were determined using multiplex PCR.  An. fluviatilis (60.4%) was the predominant species, followed by An. culicifacies (30.5%) and An. minimus (12.5%). 470 and 387 Anopheles mosquitoes collected from landing  and light trap collection were tested for sporozoite, of which  8 and 4 Anopheles positive for Plasmodium falciparum with an overall EIR 0.76  and 0.62  respectively. The  EIR of An. fluviatilis and An. culicifacies was 1.81 and 0.26 infectious bites per/person (ib/p)/ twenty month respectively. An. culicifacies was resistant to DDT 4% and Malathion 5% with mortality rate 32% and 71.12%. An. fluviatilis was resistant to DDT 4% with mortality rate 82%. Based on the EIR of An. fluviatilis and An. culicifacies, indoor malaria transmission was high regardless of high coverage of indoor-based interventions. Finally, in such villages where malaria transmission is high, coverage of bed net and indoor residual spraying should be done depending on the susceptibility status of principal malaria vectors. The continuing indoor transmission of malaria in such village implies the need for new tools and active surveillance to supplement the existing interventions and to reduce indoor malaria transmission.

Keywords: Malaria vector; Entomological inoculation rate; Malaria transmission; Insecticide susceptibility
Requires Audio or Video system for Presentation?: No