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  2. COVID-19 - Wikipedia

    en.wikipedia.org/wiki/COVID-19

    Coronavirus disease 2019 (COVID-19, also known as SARS-2) is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic. The symptoms of COVID‑19 can vary but often include fever, [7] fatigue, cough, breathing difficulties, loss of smell, and loss of taste.

  3. COVID-19 pandemic - Wikipedia

    en.wikipedia.org/wiki/COVID-19_pandemic

    COVID-19 was confirmed in South Korea on 20 January 2020. Military bases were quarantined after tests showed three infected soldiers. [307] South Korea introduced what was then considered the world's largest and best-organised screening programme, isolating infected people, and tracing and quarantining contacts. [308]

  4. Coronavirus - Wikipedia

    en.wikipedia.org/wiki/Coronavirus

    Transmission and life-cycle of SARS-CoV-2 causing COVID-19. Coronaviruses vary significantly in risk factor. Some can kill more than 30% of those infected, such as MERS-CoV, and some are relatively harmless, such as the common cold. [49] Coronaviruses can cause colds with major symptoms, such as fever, and a sore throat from swollen adenoids. [91]

  5. Centers for Disease Control and Prevention - Wikipedia

    en.wikipedia.org/wiki/Centers_for_Disease...

    In May 2020, The Atlantic reported that the CDC was conflating the results of two different types of coronavirus tests – tests that diagnose current coronavirus infections, and tests that measure whether someone has ever had the virus. The magazine said this distorted several important metrics, provided the country with an inaccurate picture ...

  6. COVID-19 pandemic in the United States - Wikipedia

    en.wikipedia.org/wiki/COVID-19_pandemic_in_the...

    By the end of 2022, an estimated 77.5% of Americans had had COVID-19 at least once, according to the CDC. [ 28 ] State and local responses to the pandemic during the public health emergency included the requirement to wear a face mask in specified situations (mask mandates), prohibition and cancellation of large-scale gatherings (including ...

  7. SARS-CoV-2 - Wikipedia

    en.wikipedia.org/wiki/SARS-CoV-2

    SARS-CoV-2 is the seventh known coronavirus to infect people, after 229E, NL63, OC43, HKU1, MERS-CoV, and the original SARS-CoV. [105] Like the SARS-related coronavirus implicated in the 2003 SARS outbreak, SARS‑CoV‑2 is a member of the subgenus Sarbecovirus (beta-CoV lineage B). [106] [107] Coronaviruses undergo frequent recombination. [108]

  8. Got COVID? Here are the new 2024 isolation guidelines

    www.aol.com/finance/got-covid-2024-isolation...

    The CDC no longer advises a five-day isolation period when you test positive, ... For more on COVID-19: Public health experts are warning of a ‘quad-demic’ this winter. Here’s where flu ...

  9. Variants of SARS-CoV-2 - Wikipedia

    en.wikipedia.org/wiki/Variants_of_SARS-CoV-2

    SARS-CoV-2 is the virus that causes coronavirus disease 2019 (COVID-19). Some have been stated, to be of particular importance due to their potential for increased transmissibility, [1] increased virulence, or reduced effectiveness of vaccines against them. [2] [3] These variants contribute to the continuation of the COVID-19 pandemic.