In the medical setting, the most important groups are the alpha-hemolytic streptococci S. pneumoniae and Streptococcus viridans group, and the beta-hemolytic streptococci of Lancefield groups A and B (also known as “group A strep” and “group B strep”).
No ambiente clínico, os grupos máis importantes son os estreptocos alfa-hemolíticos S. pneumoniae e o grupo Viridans, e os estreptococos beta-hemolíticos dos grupos de Lancefield A e B (tamén chamados “strep grupo A” e “strep grupo B”).