18 Questions
What is the primary host for Mycobacterium bovis TB?
Cattle
Which of the following is part of the Mycobacterium avium complex (MAC)?
Mycobacterium avium
What are the primary hosts for Mycobacterium avium subsp. paratuberculosis?
Cattle
Which of the following are characteristics of Nontuberculous Mycobacteria?
Environmental saprophytes
How do niacin-negative Mycobacterium species respond to nitrate?
They do not reduce nitrate
Which of the following is true about Mycobacterium genavense?
It is a member of the Mycobacterium avium complex
Which type of Mycobacterium species is recovered from hot and cold water taps and birds susceptible to quinolones?
Mycobacterium xenopi
What is a characteristic feature of colonies of Mycobacterium xenopi on Middlebrook 7H10 agar?
Small colonies with dense centers and filamentous edges
Which Mycobacterium species is associated with infections in patients with cystic fibrosis and is an important reservoir in tap water?
Mycobacterium abscessus
What characteristic feature is seen in young colonies of Mycobacterium fortuitum group grown on cornmeal agar?
Colonies with bird’s nest appearance
Which test result is associated with Mycobacterium abscessus?
Positive 3-day arylsulfatase test, no reduction of nitrate, and growth on MacConkey agar without crystal violet
Which Mycobacterium species is isolated from water, soil, and dust associated with localized cutaneous infections?
Mycobacterium fortuitum
Which Mycobacterium species is the causative agent of Johne disease?
Mycobacterium avium subsp. paratuberculosis
Which Mycobacterium species requires hemoglobin or hemin for growth?
Mycobacterium haemophilum
Which Mycobacterium species is associated with disseminated infections in patients with AIDS?
Mycobacterium genavense
Which Mycobacterium species exhibits very slow growth, needing mycobactin-supplemented medium for primary isolation?
Mycobacterium avium subsp. paratuberculosis
Which Mycobacterium species is strongly acid-fast, short, and arranged in tight clusters or cords?
Mycobacterium kansasii
Which Mycobacterium species causes disease in poultry and swine?
Mycobacterium avium subsp. paratuberculosis
Learn about the characteristics and diseases caused by Mycobacterium avium in poultry, swine, and other animals. Explore its role as a zoonotic agent and its slow growth rate in culture.
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