| [isolation trends on group a streptococci isolated from clinical specimens in hospitals in saitama, 1979-1989]. | on 4,864 group a streptococci isolated from throat culture of patients in hospitals in saitama from 1979 to 1989, we have done an epidemiological analysis of the t-type detection rates and the t-type epidemic, the monthly isolation rates, and the isolation rates by sex and age of patients. 1. the t-type detection rates of 4,864 isolates of group a streptococci showed type t12 in 22.6%, type t4 in 16.4%, type t1 in 10.8%, type t13 in 8.5%, type t6 in 7.6%, type t28 in 6.9%, type t3 in 6.1% and ty ... | 1991 | 1919127 |