Streptococcus pyogenes

(redirected from S.pyogenes)

Streptococcus

 [strep″to-kok´us]
a genus of gram-positive, facultatively aerobic cocci (family Streptococcaceae) occurring in pairs or chains. It is separable into the pyogenic group, the viridans group, the enterococcus group, and the lactic group. The first group includes the beta-hemolytic human and animal pathogens; the second and third include alpha-hemolytic parasitic forms occurring as normal flora in the upper respiratory tract and the intestinal tract, respectively; and the fourth is made up of saprophytic forms.
Streptococcus mu´tans a species implicated in dental caries.
Streptococcus pneumo´niae a small, slightly elongated, encapsulated coccus, one end of which is pointed or lance-shaped; the organisms commonly occur in pairs. This is the most common cause of lobar pneumonia, and it also causes serious forms of meningitis, septicemia, empyema, and peritonitis. There are some 80 serotypes distinguished by the polysaccharide hapten of the capsular substance. Called also pneumococcus.
Streptococcus pyo´genes a beta-hemolytic, toxigenic, pyogenic species that causes septic sore throat, scarlet fever, rheumatic fever, puerperal fever, acute glomerulonephritis, and other conditions in humans.

Strep·to·coc·cus py·og·e·nes

a bacterial species found in the human mouth, throat, and respiratory tract and in inflammatory exudates, the bloodstream, and cellulitic lesions in human diseases; it is sometimes found in the udders of cows and in dust from sickrooms, hospital wards, schools, theaters, and other public places; it causes the formation of pus, fatal septicemia, and necrotizing fascitis and myositis. There is also a specific somatic antigen (M protein) for each of the approximately 85 types. It is the type species of the genus Streptococcus.

Strep·to·coc·cus py·og·e·nes

(strep'tō-kok'ŭs pī-oj'ĕ-nēz)
A bacterial species found in the human mouth, throat, and respiratory tract and in inflammatory exudates, bloodstream, and lesions in human diseases; it is sometimes found in the udders of cows and in dust from sickrooms, hospital wards, schools, theaters, and other public places; it causes the formation of pus or even fatal septicemias.

Streptococcus pyogenes

A common bacterium that causes strep throat and can also cause tonsillitis.
Mentioned in: Tonsillitis

Strep·to·coc·cus py·og·e·nes

(strep'tō-kok'ŭs pī-oj'ĕ-nēz)
A bacterial species found in the human mouth, throat, and respiratory tract and in inflammatory exudates, bloodstream, and lesions in human diseases found in dust from sickrooms, hospital wards, schools, theaters, and other public places; causes formation of pus or even fatal septicemias.
References in periodicals archive ?
To perform controls on our incubator for strep cultures, I use 5% sheep's blood agar plates, S.agalactiae and S.pyogenes swabs to inoculate, and bacitracin discs.
A test for bacitracin susceptibility can be helpful in differentiating S.pyogenes from S.agalactiae.
Although it is correct that your incubator temperature must be accurate for your organisms to grow optimally, this QC actually tests that the disk you are using contains the appropriate amount of bacitracin so that you get the correct results with the S.pyogenes and S.agalactiae.