You may get a PCR test, which can show a positive result for up to three months after recovery. If you take a rapid antigen test, it may not detect COVID after nine days, but it is more accurate for ...

“Infectious diseases don’t respect borders,” says Khoa Thai, a clinical microbiologist at the Star-shl medical diagnostics laboratory in the Netherlands. To limit their spread, we need a globally ...

When COVID first hit, waiting days for laboratory results from an ultrasensitive polymerase chain reaction (PCR) test was commonplace. Faster tests usable by anyone, anywhere, later became widely ...

Rapid antigen diagnostic tests for the novel coronavirus will be a game changer in the fight against the pandemic, the Pan American Health Organization's (PAHO) director Carissa Etienne said on ...

Over the past four years, many of us have become accustomed to a swab up the nose to test for COVID-19, using at-home rapid antigen tests or the more accurate clinic-provided PCR tests with a longer ...