Malaria outbreak in a non endemic tribal block of Balasore district, Orissa, India during summer season.

Abstract:

:A focal outbreak of malaria at Sialimal sub-centre of Balasore district of Orissa was reported during the month of March, 2010. Three villages of the above block were affected. Regional Medical Research Centre, Bhubaneswar has conducted an entomological survey and a central clinic simultaneously, with door to door household survey to identify the fever cases. Within a span of 18 days around 172 fever cases were reported with Slide Positivity Rate (SPR) of 24.4% and Pf % of 81%. The malaria epidemiological data of the sub-centre area for last three years indicates that the area is non endemic for malaria (API was 0.81). Entomological survey revealed the presence of three known vectors of malaria i.e. Anopheles culicifacies, Anopheles annularis and Anopheles subpictus (local vector). Per Man Hour Density (PMHD) of these three species were 4.2, 2.8 and 10.8 respectively. Plasmodium falciparum sporozoites were detected in two An. culicifacies, in one An. annularis and in one An. subpictus. Larval density of Anopheline mosquitoes per dip ranged between 12 to 20. The vectors were found to be resistant to DDT but susceptible to synthetic pyrethroid. With this finding necessary remedial measures were taken by the government to curtail the transmission.

journal_name

Trop Biomed

journal_title

Tropical biomedicine

authors

Mahapatra N,Marai N,Dhal K,Nayak RN,Panigrahi BK,Mallick G,Ranjit M,Kar SK,Kerketta AS

subject

Has Abstract

pub_date

2012-06-01 00:00:00

pages

277-85

issue

2

eissn

0127-5720

issn

2521-9855

journal_volume

29

pub_type

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