The presence of M proteins in outbreak strains of Streptococcus equisimilis T-type 204.
J Infect
; 19(2): 105-11, 1989 Sep.
Article
em En
| MEDLINE
| ID: mdl-2809234
ABSTRACT
Cultures of Streptococcus equisimilis (Lancefield group C) from three outbreaks of illness were found to carry the T-protein antigen 204. Strains of this type were not otherwise represented in a collection of 743 cultures of these 'pyogenes-like' streptococci isolated from other outbreaks of infection or as random isolates. Two of the three outbreaks were of pharyngitis. The third arose in a maternity unit where the organism was isolated from mothers with puerperal fever, from staff and also from the environment. Representative strains were found to carry M-protein antigens as judged by their ability to survive and multiply in fresh normal human blood. Comparison of absorbed rabbit antiserum to the M antigens in opsonic and precipitin tests showed that a distinct M antigen was present on isolates from one outbreak of sore throat and that all cultures from the other two incidents shared a common M antigen. Samples of serum were also available from patients in the outbreak of puerperal sepsis. Most patients developed antibodies to one or more streptococcal antigens including the M protein, streptolysin O, streptokinase and the hyaluronidase specific for strains of group C and group G streptococci.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Infecções Estreptocócicas
/
Streptococcus
/
Proteínas da Membrana Bacteriana Externa
/
Proteínas de Transporte
/
Surtos de Doenças
/
Antígenos de Bactérias
Limite:
Female
/
Humans
/
Pregnancy
Idioma:
En
Revista:
J Infect
Ano de publicação:
1989
Tipo de documento:
Article