Podcast
Questions and Answers
What disease is caused by Rickettsia prowazekii?
What disease is caused by Rickettsia prowazekii?
Which of the following is a vector for Rickettsia rickettsii?
Which of the following is a vector for Rickettsia rickettsii?
What are the regions most affected by Rocky Mountain Spotted Fever?
What are the regions most affected by Rocky Mountain Spotted Fever?
Which cells in the body does Ehrlichia reproduce in?
Which cells in the body does Ehrlichia reproduce in?
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Which of the following diseases is also known to be a leading cause of sterility?
Which of the following diseases is also known to be a leading cause of sterility?
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Study Notes
Intracellular Bacteria
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Rickettsia diseases: Rocky Mountain spotted fever (R. rickettsii), Epidemic typhus (R. prowazekii), Murine typhus (R. typhi)
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Transmission of Rickettsia spp.:
- R. rickettsii: Wood ticks and dog ticks (transovarian passage)
- R. prowazekii: Human body lice
- R. typhi: Rat fleas and cat fleas
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Geographic regions most affected by Rocky Mountain Spotted Fever: Montana, Iowa, Missouri, Tennessee, North Carolina, Virginia
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Disease transmitted by body lice: Epidemic typhus (Rickettsia prowazekii)
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Cells affected by Ehrlichia: Leukocytes (WBCs)
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Diseases problematic in Texas: Rocky Mountain Spotted Fever, Ehrlichiosis, Anaplasmosis
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STD causing blindness and sterility: Chlamydia trachomatis
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Causative organism of syphilis: Treponema pallidum pallidum
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Lyme disease characteristics:
- Causative agent: Borrelia burgdorferi
- Vector: Hard ticks of the genus Ixodes (transmitted via tick bite)
- Iron-lack issue: Borrelia employs manganese instead of iron
- Disease phases: Expanding "bull's-eye" rash, neurological symptoms/cardiac issues, long-term arthritis
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Increased Lyme disease cases: Close association with infected deer ticks in the US
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Description
This quiz covers key concepts related to intracellular bacteria, including Rickettsia and their diseases such as Rocky Mountain spotted fever and typhus. It also explores transmission vectors and geographic distributions of these diseases, along with other notable bacterial infections like Lyme disease and syphilis. Test your knowledge on these vital topics in microbiology.
