Markowitz, M Resurgence of severe streptococcal diseases: prospects for a streptococcal vaccine. [electronic resource] - International journal of tissue reactions 1993 - 105-7 p. digital Publication Type: Journal Article ISSN: 0250-0868 Subjects--Topical Terms: Bacterial Vaccines--therapeutic useDisease OutbreaksHumansStreptococcal Infections--epidemiologyStreptococcus pyogenes--immunologyVirulence