An 8 year old girl is brought to the physician because of a fever, sore throat and rash. Physical examination shows an exudative pharyngitis, tender cervical lymphadenopathy and a diffuse, sandpaper like erythematous rash on her trunk and arms. 1. What is your diagnosis? 2. What is the causative organism? 3. What mechanism is responsible for the expression of the toxin that produces these signs?

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1. An 8 year old girl is brought to the physician because of a fever, sore throat and rash. Physical examination shows an exudative pharyngitis, tender cervical lymphadenopathy and a diffuse, sandpaper like erythematous rash on her trunk and arms. 1. What is your diagnosis? 2. What is the causative organism? 3. What mechanism is responsible for the expression of the toxin that produces these signs?