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The presence of M proteins in outbreak strains of Streptococcus equisimilis T-type 204.
- Source :
-
The Journal of infection [J Infect] 1989 Sep; Vol. 19 (2), pp. 105-11. - Publication Year :
- 1989
-
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.
- Subjects :
- Bacterial Proteins
Female
Humans
Pharyngitis epidemiology
Pharyngitis microbiology
Pregnancy
Puerperal Infection epidemiology
Puerperal Infection microbiology
Serotyping
Species Specificity
Streptococcal Infections epidemiology
Streptococcus isolation & purification
Antigens, Bacterial analysis
Bacterial Outer Membrane Proteins
Carrier Proteins
Disease Outbreaks
Streptococcal Infections microbiology
Streptococcus immunology
Subjects
Details
- Language :
- English
- ISSN :
- 0163-4453
- Volume :
- 19
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- The Journal of infection
- Publication Type :
- Academic Journal
- Accession number :
- 2809234
- Full Text :
- https://doi.org/10.1016/s0163-4453(89)91789-1