Omicron variant of COVID-19 detected in 10 US states, adds new uncertainties

The new Omicron variant of Covid-19 was identified in more than a dozen Americans in at least 10 US states as of this weekend, early evidence of its presence across the country, as the federal government fights the pandemic with a consistent vaccination campaign, including broader use of vaccines. States to report Omicron cases span the country from Hawaii to California and New York.