COVID-19Omicron sweeps across nation, now 73% of new US COVID cases Associated Press, December 21, 2021
COVID-19Moderna: Initial booster data shows good results on omicron Associated Press, December 20, 2021
COVID-19Pfizer says booster dose of Covid vaccine offers protection against Omicron Associated Press, December 8, 2021
COVID-19More omicron detected as hospitals strain under delta surge Associated Press, December 4, 2021
COVID-19Contact tracing revs up in some states as omicron reaches US Associated Press, December 3, 2021
COVID-19Airlines told to keep data on travelers from southern Africa Associated Press, December 2, 2021
COVID-19Update on Omicron COVID-19 variant from Tennessee Dept. of Health Collins Parker, December 1, 2021
COVID-19EXPLAINER: What is this new COVID variant in South Africa? Associated Press, November 27, 2021
COVID-19COVID variant spreads to more countries as world on alert Associated Press, November 27, 2021
