Strep, group A


A well-known strain (a type) of streptococcus (strep) bacteria that can cause strep throat and rheumatic fever. Strep A can also be associated with mild skin infections such as impetigo or more serious skin and soft tissue infections known as cellulitis.

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  • Streptococcus

    A group of bacteria that causes a multitude of diseases. Under a microscope, streptococcus bacteria look like a twisted bunch of round berries. Illnesses caused by streptococcus include strep throat, strep pneumonia, scarlet fever, rheumatic fever (and rheumatic heart valve damage), glomerulonephritis, the skin disorder erysipelas, and PANDAS. Familiarly known as strep.

  • Streptococcus faecalis

    An old name for Enterococcus faecalis.

  • Streptococcus haemolyticus

    Another name for streptococcus pyogenes.

  • Streptococcus pneumoniae (pneumococcus)

    A type of bacterium that comes in pairs and is shaped like a lancet (a surgical knife with a short wide two-edged blade). Pneumococcus is the leading cause of bacterial pneumonia and otitis media (middle ear infections) and an important contributor to bacterial meningitis. Pneumococcal infections are the most common invasive bacterial infections in children […]

  • Streptococcus pyogenes

    A common bacteria that causes strep throat (streptococcal pharyngitis), impetigo, other skin infections, rheumatic fever, scarlet fever, glomerulonephritis, and invasive fasciitis.


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