Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
How are Rickettsia transmitted?
|
Through arthropod vectors(except Q fever, Coxiella burnetti, was previously classified as a Rickettsia)
|
|
|
What symptoms are associated with most Rickettsia infections?
|
Rash, high fever and severe headache.
|
|
|
What is the Weil -Felix reaction?
|
A test for antibodies to proteus vulgaris antigens used to diagnose Rickettsia infection based on the coincidental cross reactivity with Rickettsia.
|
|
|
What is Rocky mountain spotted fever?
|
Fever, headache, conjunctival redness and rash on palms and soles due to Rickettsia rickettsi. RMSF is transmitted by tick bites and is actually more common in the eastern US.
|
|
|
Where does the rash related to RMSF start?
|
On the ankles and wrists and then spreads to palms, soles, trunk and face(centripetal spread)
|
|
|
What is epidemic typhus, and how is it spread/
|
Fever, headache, rash due to Rickettsia prowazekii. Transmitted at times of overcrowding(poverty, war by human lice.
|
|
|
What is endemic typhus, and how is it spread?
|
Fever, headache, rash from Rickettsia typhii(less severe than epidemic typhus) spread by rodent fleas.
|
|
|
What causes Rickettsial pox?
|
Rickettsia akari carried by mites that causes an initial red papule at the bite site, and eventually chickenpox like vesicles over the body.
|
|
|
What class of antibiotic can be used for all Rickettsia infections?
|
Tetracyclines(doxycycline)
|
|
|
What disease does C. burnetti cause. How does it spread?
|
Q fever. Spreads by inhalation of endospores from placental products of animals.
|
|
|
What are the symptoms of Q fever?
|
Self limited, flu like illness, pneumonia and can cause hepatitis and endocarditis.
|
