Coronaviruses are a group of related RNA viruses that cause diseases in mammals and birds. In humans and birds, they cause respiratory tract infections that can range from mild to lethal.

Apr 13, 2026 · BA.3.2, a heavily mutated new COVID-19 variant that may be better able to evade immunity from vaccines or prior infection, is now spreading in the United States. Although COVID …

Apr 17, 2026 · Coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus. Most people infected with the virus will experience mild to moderate respiratory illness and …

Learn about the types of COVID-19 treatments, symptom management, and recovery. Information for healthcare workers about COVID-19. Guidance, tools, and resources for health departments to …

Mar 13, 2026 · Coronavirus disease 2019 (COVID-19) is an illness caused by the virus SARS-CoV-2. Learn more about the symptoms, risks and ways to protect yourself.

COVID-19 is an illness caused by the SARS-CoV-2 virus. It spreads through respiratory droplets.

View the Respiratory virus data dashboards to see data about COVID-19, RSV, and influenza in King County. This section shows the total COVID-19 hospitalizations and deaths due to COVID-19 in King …

Apr 1, 2026 · Currently the CDC is not reporting a nationwide increase in severe disease from COVID-19. Case rates, emergency visits and hospitalizations are trending downward.

We now know that COVID-19 is here to stay for the foreseeable future. It’s important to understand how to live our lives while keeping ourselves, loved ones and community as safe as possible.

COVID-19 is the disease caused by SARS-CoV-2, the coronavirus that emerged in December 2019. Learn about symptoms, diagnosis, treatment and prevention.