Coronavirus

Some over-the-counter medications can help symptoms, and there are ways to ease isolation

Patient history, context and a few symptoms may help distinguish between the conditions

How to tell the different versions of SARS-CoV-2 apart, and how well vaccines protect against them

Three nasal spritzes, now in advanced trials, could trigger stronger immunity than shots in the arm

Scientific American asks experts in medicine, risk assessment and other fields how to balance the risks of COVID with the benefits of visiting public indoor spaces

Does the new strain sweeping the globe mean COVID will become ever more contagious?

The Biden administration’s Test to Treat program aims to make the treatments available at pharmacies, yet it requires a medical provider to prescribe the drugs

The country has reached an unthinkably grim milestone. Nearly 200,000 children have lost parents, many more elderly have been killed, and family well-being has been ripped apart

Saliva PCR tests may detect disease earlier in the course of an infection

A study adds to evidence suggesting that SARS-CoV-2 infection doesn’t cause an inflamed-toe condition called chilblains, but it doesn’t close the door

Scientists are just starting to unravel the disease’s long-term cardiac effects

Historians of the 1918 influenza pandemic discuss lessons for what the future of COVID might look like