Streptococcus, or strep, is a group of bacteria. There are two main types: alpha (α)-hemolytic streptococci and beta (β)-hemolytic streptococci. Beta-hemolytic streptococci can further be split ...

Hemolytic streptococci are common in the nasopharynx and nasopharyngeal vegetations. From nasopharyngeal swabs and the surface of the adenoids hemolytic streptococci were recovered in 55%; from the ...