Talk about viridians streptococcus.

Alpha hemolytic, URT and GI NF, green, diseased people may need mitral valve replacement because of vegetations occuring in them targeting healthy tissues close to heart causing subacute endocarditis due to bacteremia S. mutans is very common for dental extractions These are optochin resistant, and we just need prophylactic antibiotics to get rid of them (amoxicillin for 1 day)