Coronavirus Antigen Levels Line up with COVID-19 Severity

Coronavirus Antigen Levels Associated with COVID-19 Severity The levels of SARS-CoV-2 antigen in the blood of hospitalized COVID-19 patients appear to line up with how severe the illness is and other clinical outcomes, according to a new study published in the Annals of Internal Medicine. WebMD

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Higher antigen levels could mean the virus is reproducing and the disease is more severe, the study authors said. As a result, antigen levels could potentially be used to predict which patients may have a higher risk of more severe COVID-19, as well as who could benefit from certain treatments.

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