As health officials push COVID booster shots, a debate is quickly emerging around whether the definition of "fully vaccinated" should be changed to include an additional dose of the vaccine. Why it matters: Booster shots provide remarkably strong protection against coronavirus infections, at least for a period of time. But getting the majority of Americans to stick out their arm again would be extremely challenging. Driving the news: Two governors said this week that they don't consider people who haven't received a booster shot to be fully vaccinated. "We're 11 months into the vaccination program. In my view, if you...
