The omicron wave that assaulted the U.S. this winter also bolstered its defenses. One influential model estimates that 73% of Americans are, for now, immune to omicron, the dominant variant circulating now, and that could rise to 80% by mid-March.
and flights fill up, experts are trying to understand whether this return to normal can last, or if another setback is looming.
Scientists at Johns Hopkins University Bloomberg School of Public Health estimates that about three out of four people in the United States will have been infected by omicron by the end of the surge. They estimate about 45% of Virginians have the highest level of immunity through boosted vaccination or through vaccination plus a recent infection with omicron. Another 47% have immunity that has waned somewhat; and 7% are the most vulnerable because they were never vaccinated and never infected.
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