This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Transovarian transmission is seen in - 
Select and explain. 
A. Ticks, B. Louse, C. Flea, D. None
A: Ticks
Answer: A: Ticks 
Explanation: Ans. is 'a' i.e., Ticks o Transovarian transmission in ahropod vector is seen in scrub typhus (mite), RMSF (tick), indian tick typhus (tick) and rickettsial pox (mite).