Among his new steps to fight COVID surges this winter: requiring private health insurers to reimburse people for at-home tests. It also calls for more people to get vaccines and boosters.
More should be known about the transmissibility and severity of the new variant in "days, not necessarily weeks," a senior World Health Organization scientist says.
What's the U.S. doing to watch out for the omicron variant? Here's the work underway and the challenges that experts say may slow down the country's efforts.