All are true about poliovirus, except -
Poliovirus type 1 ia responsible for most epidemics of paralytic poliomyelitis. ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:490
Type I is responsible for most epidemics
Very difficult to eliminate Type I
Type I responsible for vaccine paralytic polio myelitis
Type I most commonly associated with paralysis
Virology