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.

COVID-19 (coronavirus disease 2019) is a disease caused by a virus named SARS-CoV-2. It can be very contagious and spreads quickly.

Feb 3, 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 …

Discover how COVID-19 2026 looks now, including new COVID-19 symptoms, what to know about each new COVID-19 variant, and when to test or seek care.

The timeline of the COVID-19 pandemic lists the articles containing the chronology and epidemiology of SARS-CoV-2. The first human cases of COVID-19 occurred in Wuhan, …

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 …

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 …

Apr 13, 2024 · Daily and weekly updated statistics tracking the number of COVID-19 cases, recovered, and deaths. Historical data with cumulative charts, graphs, and updates.

Oct 21, 2025 · 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.

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 …