Helicobacter pylori — Flashcards

Flashcard 1: Which of the common gram-negative nosocomial infections(Klebsiella, Serratia, Enterobacter)is urease-positive?_____

Answer: Klebsiella

Flashcard 2: Klebsiella, enterobacter, and serratia commonly exhibit multi-drug _____

Answer: resistance

Flashcard 3: Is Proteus mirabilis urease-positive?_____

Answer: Yes

Flashcard 4: Vibrio _____ is associated with wound infections that contact contaminated seafood or water

Answer: vulnificus

Flashcard 5: Campylobacter jejuni, _____ and Helicobacter pylori are all curved rods that are oxidase positive

Answer: Vibrio cholerae

Flashcard 6: Which curved gram negative rod is invasive and can thus cause bacteremia?_____

Answer: Campylobacter jejuni

Flashcard 7: What are the common reservoirs and the vector for Yersinia pestis?

Answer: Reservoirs: Rats and prairie dogs; Vector: Fleas (Xenopsylla cheopis)

Extra: Yersinia pestis is a Gram-negative coccobacillus showing bipolar staining (safety-pin appearance). It causes the plague. \nReservoirs in the US: Prairie dogs. \nVector: Rat flea.

Flashcard 8: What disease is caused by Rickettsia typhi?

Answer: Endemic typhus (Murine typhus) :: vector?

Extra: Vector: Rat flea (Xenopsylla cheopis)

Flashcard 9: Name the disease caused by Francisella tularensis.

Answer: Tularemia

Extra: Reservoir: Rabbits Vector: Ticks, deer flies Route: Dermally via bite or handling infected carcass; also inhalation (potential bioterrorism agent).

Flashcard 10: What disease is caused by Coxiella burnetii?

Answer: Q fever

Extra: Coxiella burnetii is an obligate intracellular Gram-negative bacterium. Its primary reservoirs are cattle, sheep, and goats. It is transmitted via inhalation of contaminated aerosols from birthing products (amniotic fluid, placenta).