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  2. COVID-19 testing - Wikipedia

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

    SARS-CoV-2 antigens can be detected before onset of COVID-19 symptoms (as soon as SARS-CoV-2 virus particles) with more rapid test results, but with less sensitivity than PCR tests for the virus. [57] COVID-19 rapid antigen tests are lateral flow immunoassays that detect the presence of a specific viral antigen, which indicates current viral ...

  3. Should You Use an Expired COVID Test? The Answer Might ... - AOL

    www.aol.com/lifestyle/expired-covid-tests-still...

    However, as the COVID-19 pandemic rapidly evolves and the scientific community’s understanding of the novel coronavirus develops, some of the information may have changed since it was last updated.

  4. Why Some Experts Suggest Getting a PCR Test, Even If You ...

    www.aol.com/news/why-experts-suggest-getting-pcr...

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  5. What should you do if you’re still testing positive for COVID ...

    www.aol.com/news/still-testing-positive-covid-19...

    Experts are monitoring increases in COVID-19 cases in the U.S. driven by new, highly infectious variants.So take a moment to make sure you how and when to use at-home COVID tests to help you stay ...

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

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

    Subtle but obvious errors were not CDC material such as "testing for Covid-19" (rather than for the virus that causes that illness). [51] In August 2020, the CDC lowered its recommendation for who should be tested, saying that people who have been exposed to the virus but are not showing symptoms "do not necessarily need a test".

  7. COVID-19 rapid antigen test - Wikipedia

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

    COVID-19 rapid antigen tests or RATs, also frequently called COVID-19 lateral flow tests or LFTs, are rapid antigen tests used to detect SARS-CoV-2 infection . They are quick to implement with minimal training, cost a fraction of other forms of COVID-19 testing , and give users a result within 5–30 minutes.

  8. Why the U.S. Still Can’t Do Enough Coronavirus Testing - AOL

    www.aol.com/news/why-u-still-t-enough-143656294.html

    (Bloomberg Opinion) -- First of two columns.In late January, soon after a laboratory in Shanghai published the genome sequence of the coronavirus — and around the time Wuhan, China, went into ...

  9. Portal:COVID-19 - Wikipedia

    en.wikipedia.org/wiki/Portal:COVID-19

    A COVID‑19 vaccine is a vaccine intended to provide acquired immunity against severe acute respiratory syndrome coronavirus 2 , the virus that causes coronavirus disease 2019 . The COVID‑19 vaccines are widely credited for their role in reducing the spread of COVID‑19 and reducing the severity and death caused by COVID‑19.