The immune system is complicated. Changing the vaccines to be Omicron specific could negatively affect the body's ability to fight delta and future strains. They need to do enough research to at least know that changing the vaccines would be unlikely to cause harm - or, that Omicron is sufficiently bad that it would be worth the risk. It's not the flu.
The immune system is complicated.
Changing the vaccines to be Omicron specific could negatively affect the body's ability to fight delta and future strains. They need to do enough research to at least know that changing the vaccines would be unlikely to cause harm - or, that Omicron is sufficiently bad that it would be worth the risk.
It's not the flu.