A PCR test detects the actual genetic material of the virus and involves a step that amplifies the presence of any material ...

As summer comes to an end, COVID-19 cases are on the rise again in California. While respiratory viruses usually peak in the winter, the novel coronavirus can also surge in the warmer months.

The tool tells Americans how long to stay home and when to get tested. The Centers for Disease Control and Prevention released an online calculator Thursday to help people determine if they should ...

Researchers are seeing an uptick in cases, as they have every summer since the pandemic began. Here’s why. By Dani Blum Covid cases are climbing again this summer. The Centers for Disease Control and ...

You wake up with a scratchy throat, runny nose, and persistent cough, but your at-home COVID-19 test reads negative. How is this possible? The short answer is yes—you can still be infected. Many other ...