News How scientists in San Francisco found the first case of the omicron COVID-19 variant in the US December 1, 2021December 2, 2021Elizabeth Weise, USA TODAYComments Off on How scientists in San Francisco found the first case of the omicron COVID-19 variant in the US The first case of the omicron variant of COVID-19 in the United States was confirmed after an all-night session by scientists in San Francisco.