Bacterial Infections of the Vascular System Flashcards
Rickettsia, ehrlichia, and anaplasma appear as what under the microscope?
Small cocci to short rods
Rickettsia, ehrlichia, and anaplasma– intra or extracellular?
Intracellular–> replicate within cells
Rickettsia, ehrlichia, and anaplasma all have what kind of vectors?
Arthropod vectors
Rickettsia, ehrlichia, and anaplasma–> all are sensitive to what medication?
Tetracycline (doxycycline)
Similarities between Q fever and Rickettsia, ehrlichia, and anaplasma
Looks the same under the microscope
Differences between Q fever and Rickettsia, ehrlichia, and anaplasma
Q fever is:
1) Transmitted by aerosols
2) Grows in alveolar monocytes/macrophages
3) Extremely Infectious
4) Causes pneumonia/hepatitis
If someone is pregnant or allergic to doxycycline, how should you treat them for these infections?
Use chloramphenicol for Rickettsia
Use fluoroquinolones for Q fever, ehrlichia, and anaplasma
Proper techniques for removing a tick
Use tweezers, Wear gloves, Remove promptly!
Are humans the normal host for any of the rickettsial infections?
Only for epidemic typhus- the others are due to accidental transmission by promiscuous vectors
Respectively, what do ehrlichia, and anaplasma cause?
Ehrlichosis and anaplasmosis
Is the presentation of ehrlichosis and anaplasmosis similar to spotted fever?
Yes, just without the spots
Rickettsia, ehrlichia, anaplasma, and Q fever all replicate here
Within infected cells
Do rickettsia divide throughout the cell?
Yes
What do ehrlichia, and anaplasma form in phagocytic vacuoles?
Morula
Are Rickettsia, ehrlichia, anaplasma, and Q fever easy to stain?
No
