Streptococcus is a genus of bacteria and it is in the field of biology.
 However, many streptococcal species are not pathogenic, and form part of the commensal human microbiota of the mouth, skin, intestine, and upper respiratory tract
==== Group F streptococci ====Group F streptococci were first described in 1934 by Long and Bliss amongst the "minute haemolytic streptococci"

