Abstract
1. The multiple occurrence of an eruptive and febrile infectious disease among the employees in a dormitory of a certain factory was diagnosed as Izumi fever in view of the epidemiological evidences as well as clinical and laboratory findings. The angina observed on these patients was provisionally called as Izumi fever angina.
2. Tonsils of the patients of Izumi fever demonstrated the mixed infection of Streptococcus, and Staphylococcus (one with hemolytic streptococcus) being highly swollen and enlarged with fairly strong erythema. This angina was milder than that of scarlet fever but stronger than thatt of lacuner tonsillitis.
3. The patients responded well to the treatment with Mycillin. The two tonsils enlargedd as far as almost to touch each other on the median line diminished in size to a degree not toexceed the posterior palate within a month.
4. As it was stated by Ueda on scarlet fever, tonsillectomy is also believed to be of considerable value in the treatment of Izumi fever though it is too early to draw any decisiveconclusion.
