I'm not sure what you're talking about. The article is very explicit that the current polio outbreak is poliovirus derived from live-virus vaccines. The only o

I'm not sure what you're talking about. The article is very explicit that the current polio outbreak is poliovirus derived from live-virus vaccines. The only obvious conclusion is that people who can get a polio vaccine but didn't should reconsider getting it, because the virus is spreading again and herd immunity against polio has collapsed. Even the vaccine that is implicated in the outbreak still provides protection against polio at lower risk than getting infected; so it's not as simple as "just stop using the oral vaccine".