Beta-haemolytic, pyogenic streptococci - S. agalactiae, S. canis, S. dysgalactiae dysgalactiae, S. dysgalactiae equisimilis, S. equi equi, S. equi zooepidemicus, S. iniae, S. porcinus, S. pyogenes

Associated infections - pharyngitis, bacteraemia, pyogenic infection, necrotising infection, septic arthritis, glomerulonephritis, meningitis, rheumatic fever

Reported susceptibilities and therapies - beta-lactams, macrolides

Notes - S. pyogenes (Lancefield group A), S. agalactiae (group B), S. d. equisimilis (groups C and G) streptococi are commensals and pathogens of man - S. iniae (previously S. shiloi) is from fish - others are from mammals

References - Schugk, J., Harjola, V.P., Sivonen, A., Vuopio-Varkila, J., Valtonen, M. (1997). A clinical study of beta-haemolytic groups A, B, C and G streptococcal bacteremia in adults over an 8-year period. Scand. J. infect. Dis. 29, 233-238.426. - Weinstein, M.R., Litt, M., Kertesz, D.A., Wyper, P., Rose, D., Coulter, M., McGeer, A., Facklam, R., Ostach, C., Willey, B.M., Borczyk, A., Low, D.E., S. iniae Study Group.(1997). Invasive infections due to a fish pathogen, Streptococcus iniae. N. Engl. J. Med. 337, 589-594.