This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and health, Subject name: Social & Preventive Medicine
The typhus group of fevers are transmitted by the following - 
Select and explain. 
A. Mites, Human body louse and Sand fly, B. Mites, Sand fly and Fleas, C. Mites, Human body louse and Fleas, D. Human body louse, Sand fly and Fleas
C: Mites, Human body louse and Fleas
Answer: C: Mites, Human body louse and Fleas 
Explanation: Typhus group fevers are : Epidemic typhus caused by R.prowazeki, the vector is the louse. Murine typhus caused by R.typhi, the vector is rat flea. Scrub typhus caused by R.tsutsugamushi, the vector is mite. Parks textbook of Preventive and Social Medicine, 25th edition, Pg 840