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 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 …

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.

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.

The global COVID-19 pandemic (also known as the coronavirus pandemic or simply the pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an outbreak …

Nov 27, 2025 · COVID-19 is caused by the SARS-CoV-2 virus, which spreads through the air in infectious respiratory particles from an infected person. Transmission is more likely in close contact …

COVID-19 (coronavirus disease 2019) is a disease caused by the SARS-CoV-2 virus. It can be very contagious and can spread quickly. COVID-19 most often causes respiratory symptoms that can feel …

Mar 10, 2025 · Influenza (Flu) and COVID-19 are both contagious respiratory illnesses, but they are caused by different viruses. COVID-19 is caused by infection with a coronavirus named SARS-CoV …

Mar 19, 2026 · This page provides an overview of COVID-19 data and trends over time. Other COVID-19 related data visualizations (previously on CDC’s COVID Data Tracker) are provided in the …