COVID-19 - Wikipedia
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic. …
Coronavirus - World Health Organization (WHO)
Sep 29, 2025 · Coronavirus disease (COVID-19)The virus can spread from an infected person’s mouth or nose in small liquid particles when they cough, sneeze, speak, sing or breathe. …
About COVID-19 | COVID-19 | CDC
Learn about COVID-19 and how it spreads About COVID-19 COVID-19 most often causes respiratory symptoms that can feel much like a cold, the flu, or pneumonia. COVID-19 may …
Symptoms of COVID-19 | COVID-19 | CDC
Mar 10, 2025 · People with COVID-19 have a wide range of symptoms ranging from mild symptoms to severe illness. Symptoms may appear 2-14 days after exposure to the virus. …
Surveillance and Data Analytics | COVID-19 | CDC
Sep 5, 2025 · COVID-19 Surveillance Data in the United States Early Indicators Test positivity (the percentage of total reported tests that are positive) and the percentage of total emergency …
Coronavirus disease (COVID-19)
Nov 27, 2025 · WHO fact sheet on COVID-19, including information on symptoms, transmission, treatment, prevention, vaccines and and WHO's work in this area.
Types of COVID-19 Treatment | COVID-19 | CDC
May 8, 2025 · COVID-19 Treatment Options Testing for COVID-19 Testing for COVID-19 can help you decide what to do next, like getting treatment to reduce your risk of severe illness and …