title: Typing of Group A streptococci from an urban area (Köln) in West Germany.
abstract: Two-hundred and twenty strains of Streptococcus pyogenes (group A streptococcus) from the urban area of Köln, West Germany have been typed by M precipitin and T agglutination tests. Determination of streptococcal nicotinamide adenine dinucleotide glycohydrolase (NADase) production and the serum opacity reaction (SOR) have also been performed. 65.5% of the isolates could be typed by the M precipitin reaction. 92.1% of the remaining strains could be identified by their T protein antigens and could be further subdivided according to their NADase/SOR pattern. Most of the M typable strains originated from upper respiratory tract infections (including scarlet fever), whereas the majority of the M nontypable streptocci had been isolated from skin, wound, and other non-respiratory sites.
mesh_terms: D000372:Agglutination Tests; D004812:Epidemiologic Methods; D005860:Germany, West; D006801:Humans; D009244:NAD+ Nucleosidase / Q000032:analysis; D011233:Precipitin Tests; D011711:Pyoderma / Q000382:microbiology; D012141:Respiratory Tract Infections / Q000382:microbiology; D012541:Scarlet Fever / Q000382:microbiology; D012703:Serotyping; D013297:Streptococcus pyogenes / Q000145:classification* / Q000201:enzymology
chemical_list: D009244:NAD+ Nucleosidase
vernacular_title: Typisierung von Gruppe A-streptokokken aus dem Raume Köln (Bundesrepublik Deutschland)