"This community prevalence study, conducted during the peak of the COVID-19 pandemic after the emergence of Omicron variants, confirmed that a large proportion of SARS-CoV-2 infections were either ...
Researchers summarize key insights from the world’s first comprehensive investigation into how a pandemic started.
Health officials wearing protective gear leave an apartment complex in Hong Kong on Wednesday that has recorded at least 280 cases of severe acute respiratory syndrome or SARS.