title: A rapid staphylococcal coagglutination technic to differentiate group A from other streptococcal groups.
abstract: A rapid staphylococcal coagglutination technic for differentiating group A from other streptococcal groups properly classified 500 isolates of beta-hemolytic streptococci when compared with the results of a reference capillary precipitin test. Presumptive classification of the same 500 isolates by bacitracin susceptibility produced a significant number of incorrect identifications. The findings further document the inherent inaccuracy of the bacitracin susceptibility test and suggest that the staphylococcal coagglutination technic may be a simple, accurate, inexpensive alternative for identification of group A streptococci.
mesh_terms: D000372:Agglutination Tests / Q000379:methods; D001414:Bacitracin / Q000494:pharmacology; D005188:False Negative Reactions; D005189:False Positive Reactions; D008826:Microbial Sensitivity Tests; D011234:Precipitins; D012703:Serotyping; D013291:Streptococcus / Q000302:isolation & purification*; D013297:Streptococcus pyogenes / Q000302:isolation & purification*
chemical_list: D011234:Precipitins; D001414:Bacitracin