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Streptococcus is a genus of gram-positive or spherical bacteria that belongs to the family Streptococcaceae, within the order Lactobacillales (lactic acid bacteria), in the phylum Bacillota. [2] Cell division in streptococci occurs along a single axis , thus when growing they tend to form pairs or chains, which may appear bent or twisted.
Strep throat is caused by the bacteria Streptococcus pyogenes, or group A streptococcus. ... As a bacterial infection, it requires antibiotics. "Unless someone is allergic, penicillin is the drug ...
Streptococcal pharyngitis, also known as streptococcal sore throat (strep throat), is pharyngitis (an infection of the pharynx, the back of the throat) caused by Streptococcus pyogenes, a gram-positive, group A streptococcus. [9] [10] Common symptoms include fever, sore throat, red tonsils, and enlarged lymph nodes in the front of the neck.
Some group A Strep bacteria are resistant to these antibiotics,” according to Dr. Kristina Bryant, a pediatric infectious disease physician at Norton Children’s Hospital in Louisville ...
Group B streptococcal infection, also known as Group B streptococcal disease or just Group B strep infection, is the infectious disease caused by the bacterium Streptococcus agalactiae. Streptococcus agalactiae is the most common human pathogen belonging to group B of the Lancefield classification of streptococci —hence the name of group B ...
This is the most common type of group A strep infection, and it can be incredibly contagious, the AAP says. ... Woods says. “It needs antibiotics for treatment,” he says.