According to a new study published in The Lancet Infectious Diseases, the XFG variant has four key mutations and displays ...

Currently, the Covid vaccine is being administered at the Sukraraj Tropical and Infectious Disease Hospital in Teku, Kathmandu.

Snag this FDA-authorized rapid test trusted by hospitals—before the next variant hitsThat Uh-Oh Feeling? Let’s Not Go There.We’ve all been there: that scratchy throat, a lingering cough, maybe a ...

Subvariants—XFG, XFG.3. JN.1—have been confirmed in swab samples of infected persons through whole-genome sequencing.

India is seeing a rise in COVID-19 cases, with 7,154 active infections as per the Health Ministry on June 12, 2025. The surge is linked to emerging variants NB.1.8.1 and LF.7, while JN.1 remains the ...

And then I will handle this swab as you see in the instructions for the rapid antigen test you have bought. Lewis: But those instructions, at least in all the U.S. home tests, say to swab the nose ...

If you’re negative, wait two days and then test again. If you’re still negative, take a third test two more days later. This is the best way to detect COVID-19 infection without symptoms.

Source Reference: Todsen T, et al "COVID-19 rapid antigen tests with self-collected vs health care worker-collected nasal and throat swab specimens: a randomized clinical trial" JAMA Netw Open ...

News Release 6-Dec-2023 COVID-19 rapid antigen tests with self-collected vs health care worker–collected nasal and throat swab specimens JAMA Network Open Peer-Reviewed Publication JAMA Network ...

Antigen tests are one type of rapid test that may help diagnose COVID-19. Some rapid tests can provide results in 15 minutes. But, they may not be as accurate as other types of tests, such as a ...

The first full FDA clearance for a COVID test came within the first year of the pandemic. In March 2021, BioFire Diagnostics secured a de novo nod for its Respiratory Panel 2.1, a PCR test that ...

Rapid tests are best used as an indicator of when you’re contagious with Covid-19 rather than when you’re infected with it, said Dr. Paul Drain, an associate professor of global health at the ...