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  2. What Really Causes a False Positive COVID-19 Test? Experts ...

    www.aol.com/false-positive-covid-19-test...

    Specificity will generally be higher than sensitivity, especially when people have COVID-19 symptoms—in other words, false-negative COVID-19 tests are more likely than false positives.

  3. Multisystem inflammatory syndrome in children - Wikipedia

    en.wikipedia.org/wiki/Multisystem_inflammatory...

    Multisystem inflammatory syndrome in children (MIS-C), or paediatric inflammatory multisystem syndrome (PIMS / PIMS-TS), or systemic inflammatory syndrome in COVID-19 (SISCoV), is a rare systemic illness involving persistent fever and extreme inflammation following exposure to SARS-CoV-2, the virus responsible for COVID-19. [7]

  4. You can still be contagious with COVID if you have a negative ...

    www.aol.com/news/still-contagious-covid-negative...

    If you have symptoms and test negative with an at-home rapid test, test again 48 hours later, the CDC advises. If you were exposed to COVID, do not have symptoms and test negative, test again 48 ...

  5. Symptoms of COVID-19 - Wikipedia

    en.wikipedia.org/wiki/Symptoms_of_COVID-19

    Other symptoms are less common among people with COVID-19. Some people experience gastrointestinal symptoms such as loss of appetite, diarrhea, nausea or vomiting. [1] [65] A June 2020 systematic review reported a 8–12% prevalence of diarrhea, and 3–10% for nausea. [2] Less common symptoms include chills, coughing out blood, diarrhea, and rash.

  6. Why you have COVID symptoms and a negative test: You ... - AOL

    www.aol.com/finance/why-covid-symptoms-negative...

    Most people with symptoms who test negative initially “test positive after a day or two,” Rajnarayanan says. ... If you test negative using an at-home test, repeat the test again in 48 hours. ...

  7. Allergies in children - Wikipedia

    en.wikipedia.org/wiki/Allergies_in_children

    According to the Mayo Clinic, “Allergy symptoms, which depend on the substance involved, can affect your airways, sinuses and nasal passages, skin, and digestive system.” [5] The severity of the following symptoms varies from child to child. [5] The symptoms of indoor and outdoor allergies in children may include: [18] [19] Runny nose

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

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

    That study analyzed data from 17 people with COVID-19 and tracked when the virus appeared in their throat, saliva, and nose, along with when home COVID tests were able to detect the virus ...

  9. COVID-19 testing - Wikipedia

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

    The US CDC's COVID-19 laboratory test kit. COVID-19 testing involves analyzing samples to assess the current or past presence of SARS-CoV-2, the virus that cases COVID-19 and is responsible for the COVID-19 pandemic. The two main types of tests detect either the presence of the virus or antibodies produced in response to infection.