A winter wave of COVID-19 has hit millions of Americans.
But it’s also strengthened our defenses.
A new model shows 73 percent of U.S. residents are now “immune” to Omicron.
“At the start of the pandemic, that would have given us herd immunity,” said Dr. John Goldman, an infectious disease specialist at UPMC. “The problem now is Omicron is so much more infectious.”: https://www.fox43.com/article/news/health/coronavirus/immune-omicron-variant-covid19-new-model/521-eb8586b4-fab0-4813-8f59-2f68f55f23b9
