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NBME 18 Answers

nbme18/Block 3/Question#14

2 yo boy, 2 days of fever, sore throat, rash

Erythrogenic toxin

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submitted by breis(4),

Streptococcus Pyogens (group A strep) has a superantigen causing shock. This antigen Erythrogenic Exotoxin A causes a Toxic shock-like syndrome: Fever, Rash, Shock, Scarlet Fever.

FA pg 133 (2019)