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:

• Oligonucleotides used in the Singleplex Real-time PCR assays for identification of Streptococcal speciesword icon (Updated June 2021)
• Singleplex real time PCR method for S. salivarius detectionexcel icon (Updated June 2021)
• Singleplex real time PCR method for S. suis detectionexcel icon (Updated June 2021)
• Oligonucleotides used in the triplex real-time PCR assays for identification of S. pyogenes, S. agalactiae and S. suisword icon (Updated June 2021)
• Triplex real time PCR method for S. pyogenes, S. agalactiae and S. suisexcel icon (Updated June 2021)