gram-positive aerobic bacteria.

GAS (S. pyogenes): responsible for a wide variety of disease, including pharyngitis, scarlet fever, impetigo, erysipelas, cellulitis, septicemia, toxic shock syndrome, necrotizing fasciitis and the sequelae, rheumatic fever and acute glomerulonephritis
GBS (S.agalactiae): neonatal meningitis, bacteria sepsis and pneumonia
S. pneumoniae: pneumonia.

Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae; Streptococcus