A case report of malaria in a foreign sailor in Japan

A foreign soilor who had arrived by ship from Goa, India, was found to be infected with both Plasmodium falciparum and P. vivax. Although the P. vivax was a chloroquine-resistant type, Fansidal Ⓡ was effective and the patient recovered. As it was the season for proliferation of mosquitoes in Japan, the patient was isolated so as not to become a source of secondary infection. Knowing the place where a patient with high grade fever comes from is of great help in diagnosing malaria, which is seldom seen in Japan.