| Question | Answer |
| Rickettsia | gram negative obligate intracellular
Transmitted via arthropods
HA, Fever, Doxycycline |
| Epidemic typhus | Rickettsia prowazekii
Flying squirrels
Rash moves from trunk to extremities |
| Endemic typhus | Rickettsia typhi
Rats and fleas |
| RMSF | Rickettsia rickettsii
Rash starts at extremities
Rash involves palms/soles |
| Scrub typhus | Orientia tsutsugamushi
Chiggers
No rash |
| Q fever | Coxiella burneti
No vector (cattle placenta or tick feces) |
| Ehrlichiosis | Deer and tick
Fever, HA, but no rash |
| Anaplasmosis | Anaplasma phagocytophila
Ixodes tick
Inclusion bodies in neuts |
| Cat scratch fever | Bartonella henselae
Self-limiting
Tx = doxycycline |
| Bacillary angiomatosis | B. henselae and quintana
Confused with Kaposi's
Tx = macrolides |
| Rabies (bug description) | Family rhabdoviridae
Enveloped, negative RNA virus |
| Rabies (clinical) | fever, malaise, agitation, photophbia, hydrophbia, paralysis, coma, death |
| Rabies reservoirs/vectors | skunk, raccoon, bat, foxes |
| Hantavirus syndromes | Hantavirus fever with renal syndrome (HFRS)
Hantavirus pulmonary syndrome |
| Arenaviruses | Enveloped negative sense RNA
Similar to hantavirus |
| Filoviridae | Ebola and Marburg
ss negative RNA
Fruit bats |
| Henipaviruses | Hendra and Nipah viruses
Systemic vasculitis |
| Colorado tick fever virus | Reoviridae coltivirus
Similar to WNV in presentation |
| Yellow fever | Flaviviridae flavivirus
Humans are hosts
Jaundice, hemorrhagic symptoms, shock |
| Chikungunya virus | Togaviridae alphavirus
Humans can be hosts
Arthritis, myositis, synovitis |
| West Nile virus | Flaviviridae flavivirus |
| Dengue | Flaviviridae flavivirus |
| What arboviruses have humans as hosts? | Dengue, Yellow fever, Chikungunya, alphaviruses |