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Why SARS-CoV-2 bounces back after antiviral treatment

Why SARS-CoV-2 bounces back after antiviral treatment

The antiviral combination of nirmatrelvir and ritonavir (brand name Paxlovid) is an effective treatment for people with COVID-19 who have mild symptoms and face a high risk of hospitalization. For some of those people, however, the virus returns, and those patients may experience more symptoms and spread the virus to others.

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