Typhus Flashcards
1
Q
What is typhus
A
Group of rickettsial diseases transmitted between hosts by arthropods
2
Q
- caused by Rickettsia typhi
- reservoir/vector: fleas on rats
- typical in warm costal regions
- relative bradycardia
A
endemic typhus
3
Q
- caused by Rickettsia prowazekii
- reservoir/vector: body louse
- central and eastern Africa, central and South America
A
epidemic typhus
4
Q
- caused by Orientia tsutsugamushi
- reservoir/vector: harvest mites on humans or rodents
- more common in Asia
- black eschar at site of original inoculation
- relative bradycardia despite fever
A
Scrub typhus
5
Q
- caused by Rickettsia spotted fever group
- spread by ticks
- e.g. Rocky Mountain spotted fever
A
Spotted fever
6
Q
Common clinical features of typhus
A
- fever, headache, malaise
- maculopapular rash
- late complication: meningoencephalitis
7
Q
Management of typhus
A
doxycycline
8
Q
A
