If you know where to look, you can see COVID-19 vaccines starting to save lives in the United States.
It’s not in the overall case numbers, though those have been steadily dropping across the United States for weeks. Epidemiologists say there could be a few reasons for that decline: we’re past the holiday seasons surge and people changed their behavior in response to the winter spikes. And by now, many people have antibodies against the virus because of a previous infection. But vaccines probably aren’t a driving factor in that drop — not enough people had been fully vaccinated against COVID-19 when the decline started, and vaccination rates are still relatively low.
Some groups of people, though, have high enough rates of vaccination…