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A 5-year-old male is brought to the pediatrician with complaints of a painful mouth/gums, and vesicular lesions on the lips and buccal mucosa for the past 4 days. The patient has not been able to eat or drink due to the pain and has been irritable. The patient also reports muscle aches. His vital signs are as follows: T 39.1, HR 110, BP 90/62, RR 18, SpO2 99%. Physical examination is significant for vesicular lesions noted on the tongue, gingiva, and lips, with some vesicles having ruptured and ulcerated, as well as palpable cervical and submandibular lymphadenopathy. Which of the following is the most likely causative organism in this patient's presentation?
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A 20-year-old college student presents to the campus health clinic complaining of painful lesions that have recently erupted on the right side of his mouth (Figure A). He has always had a problem with severe acne but reports never having experienced pain like this before. Which of the following pathogens is most likely responsible for this outbreak?
Methicillin-resistant Staphylococcus aureus
Methicillin-sensitive Staphylococcus aureus
Herpes simplex virus-1
Herpes simplex virus-2