[Importance of classifying beta hemolytic Streptococci and comparison of various tests used for the classification].

We grouped hundred beta hemolytic streptococci, isolated from several clinical specimens with precipitation, coagglutination test and biochemical properties. Among the hundred isolates, 64 percent belonged to group A, 19 percent to group B. 3 percent to group C, 2 percent to group D and 12 percent to group G with the precipitation test. The positive correlation between biochemical and precipitation tests was determined to be 91 percent, where as 99 percent of the strains were correctly identified with the coagglutination test. It is important to group Streptococci, from the epidemiological and clinical aspects, with a rapid and reliable method, chosen due to laboratory feasibilities.