inactivate

With such vaccines, called whole-virus vaccines, a person’s immune system is presented with the whole virus, often in weakened or inactivated form.

However, Prof Pollard says the mRNA vaccines performed better than the inactivated ones when tackling Covid.

While some vaccines use an inactivated virus to trigger an immune response, mRNA vaccines work by teaching cells how to make proteins that can trigger an immune response.

“However, the NC State Board of Elections’ plan to inactivate eligible voters and force them to cast uncertain provisional ballots risks disenfranchising these voters and violates federal law.”

Their vaccine is made by inactivating influenza viruses with a carcinogenic chemical called beta-propiolactone.