Afebrile parasitemia in imported vivax malaria.

THE possibility that military personnel returning from areas where malaria is hyperendemic, may introduce the disease into uninvolved areas of the United States and increase the incidence in presently endemic areas has been fully recognized by military and public health authorities.' The proven transmissibility of some imported strains of vivax malaria to American mosquitoes and by them to American soldiers has indicated the wisdom and necessity of improving and extending mosquito control measures to prevent spread of the disease. In spite of steps already taken, occasional secondary cases may be expected to develop; a few such cases have been reported.