Atypical — Flashcards

Flashcard 61: Mycobacterium _____ causes cervical lymphadenitis in children

Answer: scrofulaceum

Flashcard 62: How is Mycoplasma pneumoniae transmitted?_____

Answer: Inhalation of droplets

Flashcard 63: Which cause of sterile urethritis does not gram stain well?_____

Answer: Chlamydia trachomatis

Flashcard 64: The natural life cycle of Rickettsia prowazekii generally involves a vertebrate (human) and an invertebrate host _____

Answer: human body louse

Extra: *Rickettsia prowazekii* is unique among Rickettsia species because **humans** are the primary reservoir. Note: A sylvatic cycle exists in North America involving **flying squirrels** and their **fleas**, which can cause sporadic cases of typhus in humans.

Flashcard 65: Rickettsia spp. is an _____ _____ because it requires host CoA and NAD+

Answer: obligate intracellular organism

Flashcard 66: _____ infection is a cause of atypical pneumonia with high fever (Q fever)

Answer: Coxiella burnetii

Flashcard 67: Why doesn't Rickettsia gram stain well?_____

Answer: Intracellular parasite

Flashcard 68: Can pathologic prions convert normal prions into pathologic prions? _____

Answer: Yes

Flashcard 69: Which Rickettsia spp. commonly affects military camp recruits and POWs?_____

Answer: Rickettsia prowazekii

Flashcard 70: What is the etiology of Endemic Typhus?_____

Answer: Rickettsia typhi