The vaccine for polio was more than 20 years in development. The case fatality rate for polio is 2-5% in children and 15-30% in adults with a 25-40% rate of late adverse effects following disease.
The polio vaccine is an actual vaccine as it stops infection and transmission. In the TGA records since 1971, there have been 623 reports of adverse events. 623 reports and 3 deaths in 50 years.
Current medications which do NOT prevent infection or transmission of Covid has had more than 70,000 reports of adverse events including hundreds of death reports in 1 single year. Current fatality rates for Covid below.
Comparing the two is ridiculous.