On 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.
Will Omicron BA.5 Be the Last of the COVID Variants?
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Creative rendition of SARS-CoV-2 virus particles. Note: not to scale. NIAID [shorturl.at/hHKWY]
By Mercura Wang and Yuhong Dong, M.D., Ph.D.
Updated:
