Jun 25, 2022
By Jane Brown
Researchers at Pfizer are tweaking the COVID-19 vaccine to better target the omicron variant and say it is safe and boosts protection.
Saturday’s announcement from the pharmaceutical giant comes just days before regulators debate whether to offer Americans updated booster shots this fall.
The current COVID-19 vaccines still offer strong protection against related hospitalization and death.
But protection against infection has dropped markedly with the omicron variant, and now its even more transmissible relatives are spreading.
A statement from Pfizer says either an omicron-targeted booster or a combination shot that mixes the original vaccine with omicron protection substantially increases protection against the current form of the virus.
Rival Moderna hopes to offer a similar combination shot.