<prompt> All are true about poliovirus, except -Type I is responsible for most epidemicsVery difficult to eliminate Type IType I responsible for vaccine paralytic polio myelitisType I most commonly associated with paralysis  <response>: Poliovirus type 1 ia responsible for most epidemics of paralytic poliomyelitis. ANANTHANARAYAN AND PANIKERS TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:490 