Acute glomerulonephritis in Trinidad: serological typing of group A streptococci

Abstract
The recent epidemic of acute glomerulonephritis in Trinidad had two peaks, separated by an interval of about 6 months. Evidence is presented that there were in fact two successive but overlapping epidemics, the first due to streptococci of provisional M-type 55, and the second to streptococci of M-type 49.