Legionella pneumophila — Flashcards

Flashcard 1: Pseudomonas aeruginosa is _____ positive, thus patients with chronic granulomatous disease are susceptible to infection

Answer: catalase

Flashcard 2: What gram negative bug that causes meningococcal meningitis is treated with penicillin G or ceftriaxone?_____

Answer: Neisseria meningitidis

Flashcard 3: Shigella secretes effector proteins via a _____ secretion system

Answer: type III

Flashcard 4: Which gram-negative bacteria is associated with pneumonia in cystic fibrosis patients?_____

Answer: Pseudomonas aeruginosa

Flashcard 5: Which gram-negative obligate aerobe often causes nosocomial pneumonia?

Answer: Pseudomonas aeruginosa

Flashcard 6: What is the gram stain of Legionella?

Answer: Gram-negative (stains poorly)

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).