A year ago, news outlets briefly shone a light on the fact (a fact that makes public health officials squirm) that oral polio vaccines are causing polio outbreaks. With reports streaming in throughout 2019 regarding the circulation of vaccine-derived polioviruses in numerous African and Asian countries, a CDC virologist confessed, “We have now created more new emergences of the virus than we have stopped.”[pullquote] … there were 400 recorded cases of vaccine-derived polio in more than 20 countries worldwide.[/pullquote]