https://www.bmj.com/content/345/bmj.e7856/rr/620395 >Instead of abandoning the ineffective vaccines the polio disease was reclassified (a disease with a residual paralysis resolving within 60 days changed into a disease with residual paralysis persisting for more than 60 days, seemingly resulting in eradication of 90% cases, since the majority of polio paralysis cases resolved within 60 days) and new names introduced: Guillain-Barre syndrome, ascending paralysis, viral meningitis.