partly vaccinated against the coronavirus, state officials warn, meaning millions more people are unprotected as the pandemic’s winter surge gathers steam.
Last weekend, the Centers for Disease Control and Prevention revised a bellwether metric -- the share of people 65 and older with at least one shot.
The agency reduced the proportion from 99.9%, where it had been capped for weeks, to 95%, without changing its raw shot totals.
The move acknowledged a dynamic state officials have discovered: in collating reams of data on vaccinations, the US has counted too many shots as first doses when they are instead second doses or booster shots.