| Rickettsiae |
| Sr.No
| Disease / symptom
| Disease
agent
| likely method
of dissemination
| Incubation
period
| Lethality
| Vaccine
Availability
| Antimicrobial
therapy
| Antisera |
| 1.
| Epidemic
Typhus
| Rickettsia prowazekii
| 1.
Aerosol 2.Infected vectors (P.humanus P.capitis)
| 6-16 days
| High
| No
| Effective.
Chloramphenical, Tetracycline,
| No |
| 2.
| Q -
fever
| Coxiella burnetii
| 1.Aerosol 2.Sabotage(food supply) 3. Infected vectors (ixodid ticks)
| 10-20days
| very
Low
| Yes
| Effective. Tetracycline,
Erythromycin
| No |
| 3.
| Rocky
Mountain Fever |
Rickettsia rickettsii
| 1.Aerosol 2.Infected vectors D.andersoni D.variabilis
| 3-10 days
| High
| No
| Effective. Tetracycline,
Chloramphenical
| No |
| 4.
| Scrub
Typhus
| Rickettsia tsutsugamushi
| 1.
Aerosol 2.Infected vectors L. deliense L. akamushi
| Up to 16 days
| Low
| No
| Effective.
Chloramphenical, Tetracycline
| No |