Woman in face shield and blue gown takes cotton swab of patient's mouth, who is sitting inside parked car
What You Should Know About New Omicron Subvariants
The presence and spread of new, more-infectious and immune-evading variants show that the coronavirus is not done mutating.
ABOVE: © iStock.com, Edwin Tan
What You Should Know About New Omicron Subvariants
What You Should Know About New Omicron Subvariants

The presence and spread of new, more-infectious and immune-evading variants show that the coronavirus is not done mutating.

The presence and spread of new, more-infectious and immune-evading variants show that the coronavirus is not done mutating.

ABOVE: © iStock.com, Edwin Tan

rapid COVID-19 test

Illustration of man receiving a COVID test.
Opinion: What COVID-19 Has Taught Us About the Importance of Testing
Mark Kessel | Feb 1, 2022
The pandemic has yielded many lessons. One is that adequate and well-distributed diagnostics are key to battling disease outbreaks.
Rapid antigen tests for SARS-CoV-2
Are Rapid Tests Worse at Detecting Omicron—and Does It Matter?
Catherine Offord | Jan 14, 2022
Anecdotal reports and results from small studies on the diagnostics’ accuracy have prompted questions about the devices’ usage with the new variant, but researchers say more data are needed and emphasize the continued importance of SARS-CoV-2 testing.
Sodas, Lemon Juice Cause False Positives in Rapid COVID-19 Tests
Christie Wilcox | Jul 12, 2021
Lateral flow tests for COVID-19 can be very accurate and specific when used as directed, but introducing acidic fluids can cause the tests’ detecting antibodies to clump, which may read as a positive result.