A total of 996 COVID-19 PCR positive and 3978 negative participants were assessed in this study. Compared to SARS-CoV-2 PCR negative participants, the SARS-CoV-2 PCR positive group contained ...

The nurse said his PCR will probably be positive for up to 90 days. Is he still contagious with a negative antigen test and a positive PCR test? Many of us who have had Covid at this point have ...

Still getting a negative RAT after a COVID exposure and days of symptoms? It might be time to consider a PCR. My RATs are negative but I still think I might have COVID.