Group A streptococcus (GAS), also known as strep A is a
common bacteria which causes infections such as tonsillitis
and scarlet fever. These symptoms are usually mild and rarely
Strep A can however cause a rare, and more serious infection
known as invasive Group A strep (iGAS). This happens when
GAS bacteria get into parts of the body where it is not normally
found, like the lungs or bloodstream.
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