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Malaria transmission risk by the mosquito Anopheles baimaii (formerly known as An. dirus species D) at different hours of the night in North‐east India
Author(s) -
Prakash A.,
Bhattacharyya D. R.,
Mohapatra P. K.,
Mahanta J.
Publication year - 2005
Publication title -
medical and veterinary entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 82
eISSN - 1365-2915
pISSN - 0269-283X
DOI - 10.1111/j.1365-2915.2005.00592.x
Subject(s) - biology , malaria , insect bites and stings , anopheles , transmission (telecommunications) , veterinary medicine , ecology , biting , medicine , immunology , electrical engineering , engineering
. The risk of acquiring malaria transmitted by Anopheles baimaii Sallum & Peyton, 2005, formerly known as An. dirus species D (Sallum et al ., 2005) (Diptera: Culicidae), at different hours of the night in a forest‐fringed village of Assam, North‐east India was assessed through all‐night mosquito landing catches during 1995–2000. An estimated overall mean biting rate of 36.1 bites/person/night (95% CI = 26.2–45.8), a sporozoite rate of 1.9% (95% CI = 1.1–2.9%) and a parous rate of 58.7% (95% CI = 55.3–62.0%) were recorded. Parous and sporozoite‐positive females tended to be caught mainly before midnight. The effective entomological inoculation rate was the highest (0.249 positive bites/person/night) from 21.00 to 24.00 hours, suggesting that the second quartile of the night is the most risky period for malaria transmission by An. baimaii . Considering that ∼21% of mean inoculations take place before 21.00 hours, it appears that there is a need for appropriate protective measures during the pre‐bed time period to supplement the impact of insecticide‐treated nets against An. baimaii in north‐east India.