Which one of the following is a rickettsial disease: (A) Weils disease, (B) Rocky mountain fever, (C) Relapsing fever, (D) Pontaic fever
Answer is B. Rocky mountain spotted fever is caused by R.ricketsii.vector is dermacentar andersonii it is prevalent in noh america and South America. It is the most serious type of spotted fever Ref: AnanthNarayan and paniker's 10th edition