This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Epidemic of polio is due to - 
Select and explain. 
A. Type I virus, B. Type II virus, C. Type III virus, D. Combine type II and III virus
A: Type I virus
Answer: A: Type I virus 
Explanation: Poliovirus tyoe 1 is responsible for most epidemics of paralytic poliomyelitis. Type 3 also causes but to a lesser extent. REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:490