Mosquito Species Composition and Plasmodium vivax Infection Rates on Baengnyeong-do (Island), Republic of Korea
WALTER REED ARMY INST OF RESEARCH SILVER SPRING MD
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Vivax malaria is a significant military and civilian health threat in the north of the Republic of Korea ROK. The island of Baengnyeong-do is the westernmost point of the ROK and is located close to the southwestern coast of the Democratic Peoples Republic of Korea DPRK. Mosquitoes were collected using a black light trap on Baengnyeong-do, and Anopheles spp. were assayed by PCR, to identify the species, and screened for sporozoites of Plasmodium vivax. Of a subsample of 257 mosquitoes, Anopheles lesteri was the most frequently collected 49.8, followed by Anopheles sinensis 22.6, Anopheles pullus 18.7, Anopheles kleini 7.8, and Anopheles belenrae 1.2. The overall sporozoite rate was 3.1, with the highest rates observed in An. kleini 15.0, An. sinensis 5.2, and An. lesteri 1.6. No sporozoite positive An. pullus or An. belenrae were observed. The results extend our knowledge of the distribution and potential role in malaria transmission of An. kleini, An. lesteri, and An. sinensis, for an area previously considered to be at a low risk for contracting vivax malaria.