This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
El- tor and classic vibrio true is 
Select and explain. 
A. ElTor is more common, B. ElTor is more severe, C. Classical is associated with more carriers, D. All of the above
C: Classical is associated with more carriers
Answer: C: Classical is associated with more carriers 
Explanation: El Tor Vibrio:The severity of illness- much less, with large propoion of mild and asymptomatic infectionsMoality was low and the carrier rate highEl Tor vibrio tended to remain endemic in many new geographic areas, causing periodic epidemicsProved to be much hardier than the classical vibrios, capable of surviving in the environment for much longer