<prompt> The most predominant type of polio virus during epidemics isType IType IIType IIICombined infection of II III  <response>: Ans. is a i.e., Type I Poliomyelitis o Poliomyelitis is an acute viral infection caused by poliovirus. o There are three types of polioviruses - Type 1 -- Most common and causes most epidemics Type 2 Type 3 o No serotype - 2 type -2 poliovirus has been detected anywhere in the world since 1999, type 1 and type 3 have been detected. o Peculiar features of different types of virus - Most common cause of epidemic -- Type 1 Most difficult to eradicate -- Type 1 Vaccine induced paralytic polio -- Type 3 Most commonly associated with paralysis Type 3 Most effective antigen -- Type 2 