[Methodologic aspects of the isolation of beta-hemolytic streptococci].

A quick test, Phadirect Strep A (Pharmacia, Sweden), for the detection of faucial streptococcus A (SA) within a few minutes was compared to bacteriologic investigation in 67 patients with rheumatic diseases and tonsillitis. The test is fairly sensitive and convenient for screening purposes, although nonspecific reactions are possible. Studies, carried out in a maternity hospital, have demonstrated the value of tests for the isolation and identification of streptococcus B (SB). Optimum nutrient media for SB isolation and identification techniques described. A coagglutination test for SB serotyping has been developed on the basis of a Soviet staphylococcal reagent, manufactured as a dry preparation, and put to clinical trial.