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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 ...
However, both Streptococcus dysgalactiae and the Streptococcus anginosus group can possess group A antigen as well. Group A streptococci, when grown on blood agar, typically produce small (2–3 mm) zones of beta-hemolysis, a complete destruction of red blood cells. The name group A (beta-hemolytic) Streptococcus is thus also used. [1]
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.
Health agencies are issuing warnings to parents about invasive group A streptococcus ... involve symptoms such as a sore throat or localized skin rash. But, very rarely, strep A can become more ...
What it looks like: Scarlatina, a.k.a. scarlet fever, occurs from the Group A streptococcus bacteria of a strep throat infection, per the CDC. The bacteria releases a toxin that causes a bright ...
The rash of scarlet fever, which is what differentiates this disease from an isolated group A strep pharyngitis (or strep throat), is caused by specific strains of group A streptococcus that produce a streptococcal pyrogenic exotoxin, [21] which is mainly responsible for the skin manifestation of the infection. [25]
A dozen people in Essex have died after becoming infected by a “very serious” outbreak of invasive Group A streptococcal (IGas), also known as Group A strep or strep A. ... a skin infection ...
Group A streptococcal infections are predominantly caused by S. pyogenes. Human pathologies are mostly associated with Group A streptococci and arise most often as respiratory or skin infections. [8] Group A streptococcal infections include: Streptococcal pharyngitis; Impetigo; Necrotizing fasciitis; Cellulitis; Streptococcal toxic shock syndrome