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
Scrub typhus is spread by: September 2007 
Select and explain. 
A. Ticks, B. Fleas, C. Trombiculid mite, D. Louse
C: Trombiculid mite
Answer: C: Trombiculid mite 
Explanation: Ans. C: Trombiculid mite Scrub typhus is a form of typhus caused by Orientia tsutsugamushi. Scrub typhus is transmitted by some species of trombiculid mites ("chiggers", paicularly Leptotrombidium deliense), which are found in areas of heavy scrub vegetation. The bite of this mite leaves a characteristic black eschar that is useful to the doctor for making the diagnosis