Baseline entomological surveys were conducted in four sentinel sites along the Thailand-Myanmar border to address vector bionomics and malaria transmission in the context of a study on malaria elimination. Adult Anopheles mosquitoes were collected using human-landing catch and cow-bait collection in four villages during the rainy season from May–June, 2013. Mosquitoes were identified to species level by morphological characters and by AS-PCR. Sporozoite indexes were determined on head/thoraces of primary and secondary malaria vectors using real-time PCR. A total of 4,301 anopheles belonging to 12 anopheline taxa were identified. Anopheles minimus represented >98% of the Minimus Complex members (n=1,683), whereas the An. maculatus group was composed of two dominant species, An. sawadwongporni and An. maculatus. Overall, 25 Plasmodium-positive mosquitoes (of 2,323) were found, representing a sporozoite index of 1.1% [95%CI 0.66–1.50]. The transmission intensity as measured by the EIR strongly varied according to the village (ANOVA, F=17.67, df=3, P<0.0001). Our findings highlight the diversity and complexity of the biting pattern of malaria vectors along the Thailand-Myanmar border that represent a formidable challenge for malaria control and elimination.
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1 June 2017
Vector Bionomics and Malaria Transmission along the Thailand-Myanmar Border: A Baseline Entomological Survey
N. Kwansomboon,
V. Chaumeau,
P. Kittiphanakun,
D. Cerqueira,
V. Corbel,
T. Chareonviriyaphap
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Journal of Vector Ecology
Vol. 42 • No. 1
June 2017
Vol. 42 • No. 1
June 2017
host seeking behavior
malaria
Plasmodium
Thailand-Myanmar border
transmission
vectors