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5186 Microbiology

An 18-year-old white male high-school student visits the family physician complaining of a diffuse, painful rash extending from his midthigh to his navel region. In recounting the history of the rash, he indicates that one of his football teammates gave him topical hydrocortisone to treat a minor groin rash. A KOH scraping of the lesion reveals hyaline hyphae and a portion of the scraping is submitted for culture. A schematic of the microscopic observation of the culture is shown below. The most likely etiology is

AEpidermophyton floccosum
BMicrosporum canis
CTrichophyton rubrum
DTrichophyton tonsurans
Microbiology
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5188 Microbiology

A 35-year-old man presents to his physician with a 18Kg weight loss over the preceeding 4 months. The man has not been dieting, but has been having abdominal pain, nausea, and diarrhea. He also had a chronic cough. Sputum studies demonstrate Pneumocystis carinii, and esophagogastroduodenoscopy with biopsy demonstrates Candida and Herpes in the esophagus.The pathogen which causes this patient’s underlying disease is a member of which of the following groups of viruses?

ACaliciviridae
BCoronaviridae
CFlaviviridae
DRetroviridae
Microbiology
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