Other Streptococci

Identification of Other Streptococcus Species

Streptococcus is a diverse genus and its classification has changed several times. Streptococci are firmicutes of the order Lactobacillales and belong to family Streptococcaceae. Among the currently established genera of catalase-negative, Gram-positive cocci are several that were split off from genus Streptococcus, such as Enterococcus, Lactococcus, Abiotrophia, Granulicatella, Facklamia, and Globicatella.

Contact CDC’s Streptococcus Laboratory for information about identifying diverse species of catalase-negative, Gram-positive cocci.

Real-time PCR for Streptococcus salivarius and Streptococcus suis in singleplex and multiplex format

You can use real-time PCR assays targeting gtfP and fbpS genes for detecting S. salivarius and S. suis, respectively. Primer/probe sequences are available below. For additional information, contact StrepLab@cdc.gov.

• Oligonucleotides used in the Singleplex Real-time PCR assays for identification of Streptococcal species (Updated June 2021)
• Oligonucleotides used in the triplex real-time PCR assays for identification of S. pyogenes, S. agalactiae and S. suis (Updated June 2021)