The COVID-19 pandemic yielded important advances in testing for respiratory viruses, but it also exposed important unmet ...

There are three different ways to test for COVID-19: PCR tests, antigen tests and antibody tests. Each method is best for a different stage of COVID-19 infection. Used in sequence, all three ...

The COVID-19 pandemic yielded important advances in testing for respiratory viruses, but it also exposed important unmet ...

The claim: WHO changed COVID-19 testing guidelines; one PCR test is not enough to diagnose COVID-19. Since its global emergence over a year ago, the PCR test – a molecular test that diagnoses ...