Effects of Scarlet Fever on Rheumatic Subjects.

During the period observed, the percentage of scarlet fever cases whiclh developed cardiac symptoms was 055%, while in every case in which there wa.s a previous history of rheumatismn there was definite cardiac affection. Indeed, judging from the experience of many hundreds of cases of scarlet fever extending over a period of nearly three years, it can be sta.ted that almost without exception an attack of scarlet fever in a rheumatic subject is followed by a reappearance of some of the symptoms associated with rheumatic infection.