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Structure and Physiology
This bacteria is a Gram-positive, sphere-shaped, anaerobic microorganism that is pathogenic within humans.
Transmission and Disease
Found in the human mouth in the form of biofilm and plaque, S. sobrinus thrives in the slightly acidic environment of the oral cavity because it metabolizes food sugars passing through the mouth. The high consumption of these sugars may facilitate the growth of these organisms and because of this, may be one of the of the onsets of early childhood tooth decay.
S. sobrinus is a model organism for testing oral antiseptic products. Because it is Gram-positive and also well adapted to changing environments, it is moderately difficult to disinfect.