UNC Doctor: If you're vaccinated, and get a negative COVID test, you should be able to trust it

Vaccinated and boosted people should be able to trust a negative COVID-19 PCR test, especially if it was administered 5 to 7 days after initially being exposed to the virus. People who are feeling ill, are vaccinated and have their booster shot, and get a negative test results, should be certain they don't have COVID-19.