During the months of July and August 1938 there was an epidemic of febrile vesicular pharyngitis and stomatitis in three of the summer camps located on the shores of a lake in central New Hampshire. The disease presented three distinctive clinical features: vesicular throat lesions, high infectivity and a benign, self-limited course. Since several consultants as well as ourselves had never encountered this disease, and a survey of the literature did not reveal a report of a similar epidemic, this presentation seems justified despite unavoidably meager laboratory studies. It is to be hoped that the disease may be more completely studied if and when it appears elsewhere. COURSE OF THE EPIDEMIC The camps involved in the epidemic will be designated as A, B and C. Camp A is a boys' camp with about 100 campers and thirty-five councilors and attendants. Camp B is a girls' camp and camp C a