On the Localization of the Geographical Distribution of the McCoy Strain of Plasmodium Vivax

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  • Station for Malaria Research, Tallahassee, Florida


West Florida and contiguous Alabama are indicated as the indigenous habitat of the McCoy strain by, (a) original isolation of the strain, (b) the detection of a person naturally refractory to this strain from this region, and (c) the short duration of attacks produced by the McCoy strain in west Floridians and Alabamians, which probably has considerable homologous significance. The attacks of moderate duration experienced by southerners from outside this region probably are of heterologous significance.