Biontech Immunization News Today

"today" show. is it okay to get pfizer or moderna if i had johnson & johnson originally? what do you think is most effective for folks, mix and match or not? >> i would be careful about giving the message that its willy-nilly, you can do whatever you want. i dont think of it that way. i got two doses of the pfizer biontech vaccine, and i deliberately decided for my third immunization to get another pfizer biontech immunization, a homologous boost, because theres going to be a lot more data on it...