Transovarian transmission is seen in which infection -: (A) Plague, (B) Filarial, (C) Guinea, (D) Rocky Mountain spotted fever
Answer is D. Transovarial transmission is done by Ticks. Tick born disease above is RMSF caused by Rickettsia rickettsii REF: PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE, 25TH EDITION, PG NO. 840