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  1. Coronavirus - World Health Organization (WHO)

    Dec 5, 2025 · 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 …

  2. Coronavirus - Wikipedia

    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.

  3. About COVID-19 | Covid | CDC

    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 …

  4. COVID-19: Symptoms, treatment, what to do if you feel sick

    Symptoms of COVID-19 (coronavirus), what to do if have severe symptoms, feel sick or were exposed, caring for others, treating COVID-19 and long-term symptoms.

  5. Coronavirus disease 2019 (COVID-19) - Symptoms and causes

    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.

  6. COVID - Coronavirus Statistics - Worldometer

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

  7. COVID-19 | Cause, Symptoms, Treatment, & Prevention | Britannica

    4 days ago · There is no cure for COVID-19, but individuals can be protected against severe illness through vaccination. Learn about the symptoms, treatment, and prevention of COVID-19.

  8. COVID-19 - Johns Hopkins Medicine

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

  9. Coronavirus Disease (COVID-19): Symptoms & Treatment

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

  10. Coronavirus disease (COVID-19)

    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 …