Wednesday 19 August 2020

What to know about Covid-19 tests, from PCR to antigen to antibody

‘People often talk about COVID-19 testing like it means only one thing. But in reality, the U.S. Food and Drug Administration (FDA) has so far granted emergency-use authorization to more than 200 different tests meant to detect a current or past infection from SARS-CoV-2, the virus that causes COVID-19. Most recently, the agency made headlines for approving the first such test that uses saliva samples, the aptly named SalivaDirect test out of the Yale School of Public Health.

‘These COVID-19 tests fall into three main categories: PCR, antigen and antibody. Dr. Aneesh Mehta, chief of infectious diseases services at Emory University Hospital in Atlanta, Ga., broke down the differences between them—and what to keep in mind if you decide to get tested.’

Read here (Time Magazine, August 20, 2020)

Worst ever Covid variant? Omicron

John Campbell shares his findings on Omicron.  View here (Youtube, Nov 27, 2021)