level: Rickettsias
Questions and Answers List
level questions: Rickettsias
| Question | Answer |
|---|---|
| Rickettsias - general info | - small gram-negative bacteria - obligate intracellular parasites - multiply only in living cells - transmitted by lice, fleas, ticks, and mites |
| Coxiella | - Rickettsias - small gram neg rods - aerobic - disease - nonmotile - mesophilic; optimum growth at 32-35 C - more heat resistant than many pathogenic bacteria - destroyed by pasteurization (62.8 C, 30 min) |
| Coxiella example | Coxiella burnetti - obligate intracellular parasite - microaerophile - infection in cattle, sheep, and goats (primary reservoirs) - human pathogen - Q-fever in humans especially from the consumption of unpasteurized milk |