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Group A streptococcal infections are a number of infections with Streptococcus pyogenes, a group A streptococcus (GAS). [1] S. pyogenes is a species of beta-hemolytic Gram-positive bacteria that is responsible for a wide range of infections that are mostly common and fairly mild. If the bacteria enters the bloodstream, the infection can become ...
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.
Similarly, group B streptococcus typically denotes Streptococcus agalactiae, although minor beta-hemolytic group B streptococci like S. troglodytidis exist. [15] While most streptococcal illnesses in humans originate from species adapted to humans, such as S. pneumoniae or S. pyogenes , there are zoonotic species capable of causing infections ...
Though strep throat can be treated with antibiotics, untreated infections can turn dangerous quickly. An iGAS infection can cause many different complications, some of which can be life-threatening.
Health agencies are issuing warnings to parents about invasive group A streptococcus (iGAS), a common bacterium that usually causes mild illness but can sometimes result in severe cases and even ...
Group A Streptococcus (Group A Strep or Strep A) bacteria can cause many different infections. The bacteria are commonly found in the throat and on the skin, and some people have no symptoms.
Sydenham's chorea is an autoimmune disease that results from childhood infection with Group A beta-haemolytic Streptococcus. It is reported to occur in 20–30% of people with acute rheumatic fever and is one of the major criteria for it, although it sometimes occurs in isolation.
Other causes include other bacterial infections (such as group A streptococcus or streptococcal pharyngitis), trauma, and tumors. [3] Gastroesophageal (acid) reflux disease can cause stomach acid to back up into the throat and also cause the throat to become sore. [5] In children, streptococcal pharyngitis is the cause of 35–37% of sore ...