Volume 17, Issue 4
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



In the course of entomologic studies conducted on Koh Samui during 1966 both and were implicated in the transmission of dengue viruses on that island. Both species were widely distributed and abundant during the 1966 epidemic of dengue hemorrhagic fever on the island. Eight isolations of dengue type 2 virus were obtained from wild female , and four strains of the same virus were isolated from collected during the epidemic. Both mosquito species appeared to coexist on Koh Samui in distinct but overlapping ecologic habitats, but the distribution of was more restricted than that of , which exhibited greater versatility in the utilization of oviposition sites on Koh Samui. Varying levels of resistance to DDT were detected in four strains of and one strain of from this area.


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