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What is Streptococcus Viridans: Causes, Symptoms, Treatment

Streptococcus Viridans are the group of organisms which are mostly found in gut, mouth, and genital region. In this article we will know more about streptococcus Viridans.

What is Streptococcus Viridans?

Streptococcus Viridans or the Viridans group streptococci or VGS, are a diverse range of organisms in the genus of Streptococcus, which are known for greening of the blood in the blood agar, where they are grown normally.

Oral streptococcus largely comprise of members of the VGS, which now include 20 species, which are the inhabitants of the gastrointestinal tracts, oropharyngeal cavity, and the genital tracts of all mammals.

It must be noted that Viridans streptococci or the streptococcus Viridans are part of the normal microbial flora of we human beings.(1)

Symptoms Of Streptococcus Viridans

Some of the symptoms experienced by the patients with an infection of streptococcus Viridans generally include tiredness, fever, weakness, loss of weight, problems with the normal functioning of heart in cases where there occurs endocarditis, and some respiratory problems.

Causes Of Streptococcus Viridans

We have mentioned earlier that the streptococcus Viridans are often present in the mouth, genital regions, and the gut. The most serious infection of streptococcus Viridans occur when the microbe or the bacteria enters any other regions of your body. For instance, in case the streptococcus Viridans enter into the bloodstream, it can result in endocarditis or an infection of the heart’s inner lining.

It must be mentioned that those people who have damaged heart valves or who suffer from cardiac abnormalities and a compromised immune system, are at a high risk of getting infected by streptococcus Viridans.

Treatments For Streptococcus Viridans

Streptococcus Viridans infections are usually treated by antibiotics, such as oral Roxithromycin’s, oral Amoxicillin, oral Rifampin, intravenous Cephalothin, Intravenous Penicillin, intravenous vancomycins; all of which have got some kind of activity against gram-positive organisms.


It is important for you to go for a doctor’s consultation in case you experience any of the symptoms of streptococcus Viridans and have a proper diagnosis of your condition so as to take the prescribed treatments for treating your condition.


Pramod Kerkar, M.D., FFARCSI, DA
Pramod Kerkar, M.D., FFARCSI, DA
Written, Edited or Reviewed By: Pramod Kerkar, M.D., FFARCSI, DA Pain Assist Inc. This article does not provide medical advice. See disclaimer
Last Modified On:August 8, 2019

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