For the past few months, as the world has been debating boosters, breakthrough infections, and real-world efficacy, there has been one common refrain in questions I'm being asked on Twitter and in person:
CNN.com - RSS Channel - HP Hero, CNN
Sat, 09/25/2021 - 6:47pm
For the past few months, as the world has been debating boosters, breakthrough infections, and real-world efficacy, there has been one common refrain in questions I'm being asked on Twitter and in person: