Figure 6From: Dynamics of positional warfare malaria: Finland and Korea comparedMonthly military cases of malaria form 1941 to 1944 and civil cases in 1945. The red horizontal line indicate the threshold temperature for sporogony of Plasmodium vivax in South Finland. Summer peaks of malaria cannot be explained by primary infections because Anopheles messeae hatch on average only in the latter half of July [1, 19].Back to article page