42, No. 2, Feb., 1928 Skin Reactions with Bacterial Filtrates ... A high percentage of persons, both healthy and diseased, reacted positively to the hemolytic streptococcus filtrates. There was no ...

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 ...