Which is not transmitted by ahopod ?
Ans. is 'b' i.e., Coxiella burnetti . The Q fever agent differs from other rickettsiae in many features. - Smaller size - Greater resistance to heat and drying - Major transmission route being inhalation or ingestion. - Independent of ahropod vector. Remember . In milk, Coxiella burnetii may survive pasteurization by the holding method, but the flash method is effective.
Rickettsia prowazakii
Coxiella burnetii
Rickettsia akari
Rickettsia rickettsii