The Omicron variant of SARS-CoV-2 has renewed attention on Covid-19 antigen test kits. They are in high demand across the United States, and many Americans are having trouble getting them, prompting ...

If you don't feel well, you may worry that you have COVID-19. The only way to know for sure is to take a test. At-home tests can tell whether you have the virus right now. More specialized antibody ...

As the United States reels from the massive economic fallout of the coronavirus outbreak, there are growing calls by President Trump and others to start to reopen businesses, schools and other public ...

Gone are the days of visiting a doctor’s office to determine whether you have Covid. Instead, you can buy over-the-counter test kits, which diagnose infection from the comfort of your home, making ...