The US FDA has launched an investigation after reports of COVID relapses in patients within 5 to 9 days following the use of Pfizer’s pill known as nirmatrelvir.
The U.S. Food and Drug Administration (FDA) is looking into reports of relapses among people who used Pfizer's COVID-19 pill.
An FDA spokesman said in an email that the agency is "evaluating the reports of viral load rebound after completing paxlovid treatment and will share recommendations if appropriate."
A 71-year-...
