Podcast
Questions and Answers
What disease is caused by Rickettsia prowazekii?
What disease is caused by Rickettsia prowazekii?
- Murine typhus
- Ehrlichiosis
- Rocky Mountain spotted fever
- Epidemic typhus (correct)
Which of the following is a vector for Rickettsia rickettsii?
Which of the following is a vector for Rickettsia rickettsii?
- Cat flea
- Wood tick and dog tick (correct)
- Body louse
- Rat flea
What are the regions most affected by Rocky Mountain Spotted Fever?
What are the regions most affected by Rocky Mountain Spotted Fever?
- Montana, Iowa, Missouri, Tennessee (correct)
- Florida and Louisiana
- New York and Massachusetts
- Texas and California
Which cells in the body does Ehrlichia reproduce in?
Which cells in the body does Ehrlichia reproduce in?
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?
Flashcards
Rocky Mountain Spotted Fever (RMSF) vector
Rocky Mountain Spotted Fever (RMSF) vector
Wood ticks and dog ticks, with transovarial passage.
Epidemic Typhus vector
Epidemic Typhus vector
Human body louse, transmitted through feces.
Chlamydia trachomatis symptoms
Chlamydia trachomatis symptoms
A sexually transmitted disease that can cause blindness and infertility.
Lyme disease cause
Lyme disease cause
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Ehrlichia reproduction location
Ehrlichia reproduction location
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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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