The anti-viral medication Paxlovid is given for five days to reduce severe illness in someone with Covid-19.
Mandatory Credit: Stephanie Nano/AP
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What should people know about Paxlovid rebound?
After being diagnosed with Covid-19 last month, President Joe Biden recently tested negative for the coronavirus, only to test positive again a few days later. Biden had taken the antiviral medication Paxlovid, which has been associated with some patients testing positive again for the virus after completing treatment.
