SINCE the cessation of hostilities, some ten million soldiers, sailors and marines have returned from overseas and resumed civilian life. Because a significant percentage served in areas notorious for the prevalence of tropical and exotic diseases, a serious concern quite justifiably exists regarding the possible effects on civilian public health and on civilian medical practice in general.Butler and Sapero,1 in 1945, analyzed the possibilities of new tropical diseases being introduced into the United States and stated that, during the two-year period 1943–1944, many thousands of servicemen who had acquired tropical diseases overseas had already returned and that no new . . .