COVID VariantsWill Omicron BA.5 Be the Last of the COVID Variants?SavePrintCreative rendition of SARS-CoV-2 virus particles. Note: not to scale. NIAID [shorturl.at/hHKWY]Mercura Wang&Yuhong DongM.D., Ph.D.8/16/2022|Updated: 3/14/2023On January 20, 2020, the first case of COVID-19 emerged in the United States. More than 30 months on, the pandemic is still considered ongoing.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.