What type of infections can viridans streptococcus cause?

Viridans streptococci are a group of alpha-hemolytic streptococci that are part of the normal flora of the human oropharynx and dental areas. One of their pivotal roles in human health is in dental infections. They are frequently implicated in cases of dental caries (cavities) due to their ability to adhere to tooth surfaces and form biofilms. Additionally, they can contribute to periodontal disease because of their presence in the gums and alignment with oral health issues.

Beyond dental infections, viridans streptococci can also cause endocarditis, particularly in individuals with pre-existing heart conditions, which often stems from bacteria entering the bloodstream during dental procedures or poor oral hygiene. While viridans streptococci are not commonly associated with respiratory, skin, or gastrointestinal infections, their predominance in the oral cavity makes them particularly significant in a dental context. This specificity is why dental infections are correctly recognized as a primary concern with viridans streptococcus.