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2021年11月29日 · First identified by South African scientists, omicron cases have been reported from Australia and Hong Kong to Canada. The first case in the United States was confirmed on Dec. 1. Track the...
2021年12月15日 · The omicron variant is rapidly multiplying. Learn about the omicron Covid variant, including omicron symptoms and how effective vaccines are against omicron.
2021年12月21日 · The omicron variant of the coronavirus was first detected in late 2021. It has since swept the globe, eventually vanquishing other variants including delta. Omicron soon began branching off into...
2022年1月7日 · Coronavirus. Omicron cases could fall just as quickly as they rose, CDC says. Instead of a wave, picture the recent surge in the U.S. as more of an "ice pick," similar to cases in South Africa,...
2022年7月7日 · BA.5, now dominant U.S. variant, may pose the biggest threat to immune protection yet. The FDA recommended that Covid vaccine makers target two omicron subvariants — BA.4 and BA.5 — in new ...
2022年5月3日 · Coronavirus. What the latest omicron subvariants mean for reinfection risk. In the U.S., the BA.2.12.1 subvariant is gaining a foothold, while South Africa is seeing a surge in cases from two...
2021年11月30日 · Coronavirus. Why scientists — and much of the world — reacted so quickly to the omicron variant. Mutations on the spike proteins of the variant caught the attention of researchers who have been...
