title: Properties and type antigen patterns of group B streptococcal isolates from pigs and nutrias.
abstract: All 59 group B streptococcal cultures isolated from pigs and nutrias reacted with group B-specific antiserum and gave a positive CAMP reaction in the zone of staphylococcal beta-lysin. Most of the cultures were pigmented; all cultures hydrolyzed Na hippurate and utilized salicin, maltose, and saccharose but not esculin, mannitol, or inulin. Fifty-three percent of the group B streptococci from pigs and none of those from nutrias were lactose positive. Serotyping revealed that most of the group B streptococci from pigs were of serotype III and most of those from nutrias were of type Ia/c. Protein c was present as c beta antigen. All group B streptococci were susceptible to penicillin and bacitracin (10 U), and most of the porcine cultures were resistant to tetracycline. According to these results, group B streptococci from pigs and nutrias differ from bovine and human group B streptococci and seem to play no role in cross-infections between animals or between animals and humans.
authors.affiliation: Institut für Bakteriologie und Immunologie der Justus-Liebig-Universität Giessen, Germany.
authors.forename: I W
authors.initials: IW
authors.lastname: Wibawan
authors.forename: C
authors.initials: C
authors.lastname: Lämmler
authors.forename: J
authors.initials: J
authors.lastname: Smola
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial / Q000276:immunology*; D001426:Bacterial Proteins / Q000032:analysis; D008826:Microbial Sensitivity Tests; D010041:Otters / Q000382:microbiology*; D011135:Polysaccharides, Bacterial / Q000032:analysis; D012703:Serotyping; D013292:Streptococcus agalactiae / Q000276:immunology* / Q000302:isolation & purification; D013552:Swine / Q000382:microbiology*
chemical_list: D000942:Antigens, Bacterial; D001426:Bacterial Proteins; D011135:Polysaccharides, Bacterial