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Omicron variant claims its first victim in the U.S.December 21, 2021 -
Omicron updates: Biden issues travel ban, new cases found in EuropeNovember 27, 2021 -
COVID variants are getting better at airborne transmission; studySeptember 18, 2021 -
New COVID 'variant of interest' mu found in Missouri, IllinoisSeptember 8, 2021 -
82 people have died of COVID since July 1 in Missouri county, officials sayAugust 11, 2021 -
Health department IDs Missouri’s first case of virus variantApril 7, 2021 -
Why isn’t the U.S. doing more to track coronavirus variants?February 12, 2021 -
How should new COVID-19 variants change our behavior?February 9, 2021 -
LA County reaches grim milestone of 1 million COVID-19 casesJanuary 18, 2021