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  1. 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. Symptoms may start as …

  2. COVID-19 pandemic - Wikipedia

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

  3. What Are the Current COVID-19 Guidelines? - Cleveland Clinic Health ...

    Oct 3, 2025 · More people have developed immunity against severe COVID-19 infection, and the guidelines reflect that reality. Here are some highlights.

  4. Coronavirus Symptoms: Early Signs, Serious Symptoms - WebMD

    Nov 3, 2025 · COVID-19 Symptoms COVID-19 is a respiratory condition caused by a coronavirus. Some people are infected but don’t notice any COVID-19 symptoms (doctors call that being asymptomatic). …

  5. 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.

  6. 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.

  7. Healthy Returns: FDA may add strongest safety warning to Covid shots …

    2 days ago · The FDA is reportedly preparing to add what's known as a "black box" warning to Covid shots by the end of the year, marking a major shift in vaccine oversight.

  8. Stanford Medicine study shows why mRNA-based COVID-19 vaccines …

    4 days ago · A new study implicates a pair of substances secreted by immune cells in inducing myocarditis among mRNA-based COVID-19 vaccine recipients — and proposes a strategy to …

  9. CDC study says Covid shots continue to protect healthy kids from …

    3 days ago · A Centers for Disease Control and Prevention study released Thursday finds that Covid vaccines continue to protect healthy children from severe illness — a conclusion top federal health ...

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

    Dec 8, 2025 · COVID-19 is characterized by a variety of symptoms, including fever, cough, congestion, fatigue, shortness of breath, headache, sore throat, nausea or vomiting, loss of smell or taste, and …