Rickettsia Flashcards
(19 cards)
Rickettsia
Obligate intracellular except
Coxiella burnetii
Rickettsia
Requires living cells for growth except
Coxiella burnetii
Coxiella burnetti is unique because
it can resist heat drying and chemical agent
T/F. Coxiella burnetti is larger than rickettsia
false. smaller.
Rickettsia Specimen (3)
○ biopsy of skin tissues
○ peripheral blood
○ CSF
Rickettsia stain (2)
○ Giemsa
○ Macchiavello stain
Rickettsia gold standard
Indirect florescent antibody test
presumptive test for rickettsia diseases
Weil-Felix: OX2, OXk, OX19
Spotted Fever Group (3)
R. rickettsia
R. conorii
R. akari
R. rickettsia disease (2) and vector
● RMSF - Rocky Mountain spotted fever
● American spotted fever
● Vector: Ticks
R. conorii disease (5) and vector
● Mediterranean Israel spotted fever
● Kenya tick typhus fever
● Indian tick typhus
● Boutonneuse fever
● Marseilles fever
● Vector: Ticks
R. akari disease and vector
● rickettsial pox
● Vector: mites
Typus Fever Group (2)
R. prowazeki
R. typhi
R. prowazeki disease and vector
● Epidemic typhus/Brill Zinsser - relapse
● Vector: Lice
R. typhi disease and vector
● Endemic/Murine typhus/Rat typhus
● Vector: Rat fleece
Scrub Fever Group
Orientia tsutsugamushi
Orientia tsutsugamushi disease (3) and vector
● Scrub typhus
● Chiggerborne typhus
● Japanese fever
● Vector: chigger - larvae of mites
Q Fever (query) - affects lungs
Coxiella burnetii
Coxiella burnetii vector and MOT
● Vector: ticks
● Inhalation
