Bacterial Infections USMLE Step 1 Practice Question
A 9 year old boy is brought to clinic with fever, sore throat, and a diffuse erythematous rash that feels like sandpaper for 2 days. Examination shows pharyngeal erythema, tonsillar exudates, circumoral pallor, and a strawberry tongue. His mother says several children at school have had similar throat infections. Which of the following is the most likely causal organism?
Answer choices
- AStaphylococcus aureus
- BStreptococcus pyogenesCorrect answer
- CCorynebacterium diphtheriae
- DEpstein Barr virus
- EAdenovirus
- FStreptococcus pneumoniae
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