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Omicron variant claims its first victim in the U.S.December 21, 2021 -
Omicron variant updates: Biden issues travel ban, new cases found in EuropeNovember 28, 2021 -
Omicron updates: Biden issues travel ban, new cases found in EuropeNovember 27, 2021 -
Fauci ‘would not be surprised’ if omicron COVID-19 variant is already in the USNovember 27, 2021 -
COVID variants are getting better at airborne transmission; studySeptember 18, 2021