What Is Streptococcus Mitis Oralis?

Streptococcus mitis, previously known as Streptococcus mitior, is a mesophilic alpha-hemolytic species of Streptococcus that inhabits the human mouth. It is most commonly found in the throat, nasopharynx, and mouth. It is a Gram-positive coccus, facultative anaerobe and catalase negative.

What disease does Streptococcus mitis cause?

Streptococcus mitis is prevalent in the normal flora of the oropharynx, the female genital tract, gastrointestinal tract, and skin. Although it is usually considered to have low virulence and pathogenicity, Streptococcus mitis may cause life-threatening infections, particularly endocarditis. Meningitis with S.

What is Streptococcus mitis Oralis group?

Streptococcus mitis and S. oralis are human oral colonizers, opportunistic pathogens, and species of the viridans group streptococci (VGS). VGS are associated with ∼23% of Gram-positive bacteremia in immunocompromised patients (1, 2) and ∼17% of infective endocarditis (IE) cases (3).