A mix-and-match Covid-19 booster vaccine policy would provide two distinct advantages: a stronger immune response to the extra shot, plus a lot less confusion for people seeking booster doses.

from CNN.com - RSS Channel - HP Hero https://ift.tt/3G1XrGZ
via IFTTT
from CNN.com - RSS Channel - HP Hero https://ift.tt/3G1XrGZ
via IFTTT