You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Causes of community-acquired native valve endocarditis are and explain in detail?
Streptococcus viridans is a group which normally resides in the mouth and upper respiratory tract and is alpha hemolytic. In persons with pre-existing cardiac lesions, they may cause bacterial endocarditis, Streptococcus sanguis being most often responsible. Following tooth extraction or dental procedures, they cause transient bacteremia and get implanted on damaged or prosthetic valves or in congenitally diseased hea and grow to form vegetation. Streptococcus mutans is also a member of viridans group which causes endocarditis in individuals with risk factors ( dental extraction in people with damaged valves). Reference: Textbook of Microbiology; Anathanarayan and paniker's; 10th edition; Page no: 220