They are also known as Streptococcus anginosus (according to the Lancefield classification system) or as members of the S. milleri group (according to the European system). Group G streptococci
These streptococci are usually, but not exclusively, beta-hemolytic. Streptococcus dysgalactiae subsp. canis is the predominant subspecies encountered. It is a particularly common GGS in humans, although it is typically found on animals. S. phocae is a GGS subspecies that has been found in marine mammals and marine fish species. In marine mammals it has been mainly associated with meningoencephalitis, sepsis, and endocarditis, but is also associated with many other pathologies. Its environmental reservoir and means of transmission in marine mammals is not well characterized. Group H streptococci
Group H streptococci cause infections in medium-sized canines. Group H streptococci rarely cause  human illness unless a human has direct contact with the mouth of a canine. One of the most common ways this can be spread is human-to-canine, mouth-to-mouth contact. However, the canine may lick the humans hand and infection can be spread, as well. Molecular taxonomy and phylogenetics
Streptococci have been divided into six groups on the basis of their 16S rDNA sequences: S. anginosus, S. gallolyticus, S. mitis, S. mutans, S. pyogenes and S. salivarius. The 16S groups have been confirmed by whole genome sequencing (see figure). The important pathogens S. pneumoniae and S. pyogenes belong to the S. mitis and S. pyogenes groups, respectively, while the causative agent of dental caries, Streptococcus mutans, is basal to the Streptococcus group.
See also
Cia-dependent small RNAs
Quellung reaction
Streptococcal infection in poultry
Streptococcal pharyngitis
Streptokinase

References
External links
Centers for Disease Control Prevention (CDC) (March 2000). "Adoption of perinatal group B streptococcal disease prevention recommendations by prenatal-care providers—Connecticut and Minnesota, 1998". MMWR Morb. Mortal. Wkly. Rep. 49 (11): 228–32. PMID 10763673. Nature-Inspired CRISPR Enzyme Discoveries Vastly Expand Genome Editing . On: SciTechDaily. June 16, 2020. Source: Media Lab, Massachusetts Institute of Technology. Streptococcus genomes and related information at PATRIC, a Bioinformatics Resource Center funded by NIAID
The Canadian Strep B Foundation Archived 2013-05-02 at the Wayback Machine
The UK Group B Strep Support charity