Last year, the emergence of the highly transmissible omicron variant of the COVID-19 virus caught many people by surprise and led to a surge in cases that overwhelmed hospitals and drove up fatalities. Now we're learning that omicron is mutating to better evade the immune system.
Omicron-specific vaccines were authorized by the FDA in August and are recommended by U.S. health officials for anyone 5 or older. Yet only half of adults in the United States have heard much about these booster shots, according to a recent KFF poll, and only a third say they've gotten one or plan to get one as soon as possible. In 2020 and 2021, COVID cases spiked in the U.S. between November and February.
