What are the viridans group streptococci and where are they normally found?
Answer: Human gastrointestinal tract flora. They are normally found in the nasopharynx and gingival crevices. Usually associated with dental infections (Streptococcus mutans), subacute bacterial endocarditis (heart valve destruction), and abscesses (Streptococcus intermedius group). Order a CT scan with contrast to detect an abscess in the body if S. intermedius is extracted from the blood.