Susceptibility of Anopheles Quadrimaculatus and A. Albimanus to Domestic and Foreign Strains of Plasmodium Vivax

SummaryThe relative susceptibility of Anopheles quadrimaculatus and two strains of A. albimanus (Panama and Florida Keys strains) to three strains of Plasmodium vivax was determined. The strains of vivax included a U. S. strain (St. Elizabeth), a New Guinea strain (Chesson), and vivax of Korean origin.In all cases A. quadrimaculatus showed a high degree of susceptibility, while the two strains of albimanus either were completely non-susceptible, as in the Korean vivax, or became infected only occasionally and at a very low rate.The infectivity of Korean vivax to A. quadrimaculatus, and transmission through that species, confirms the possibility of establishment of malaria from that area in this country.