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  2. Is it COVID, RSV or seasonal allergies? Here’s how to tell ...

    www.aol.com/covid-rsv-seasonal-allergies-tell...

    Here are some tips for telling the difference between allergies and the two viruses, according to the Allergy & Asthma Network. ... Several common symptoms of seasonal allergies and COVID-19 are ...

  3. Is it COVID-19, the flu, allergies or a regular ol’ cold ...

    www.aol.com/covid-19-flu-allergies-regular...

    These are the different symptoms and treatments for common respiratory conditions.

  4. Is it COVID or just seasonal allergies? How to tell the ... - AOL

    www.aol.com/covid-just-seasonal-allergies-tell...

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  5. Symptoms of COVID-19 - Wikipedia

    en.wikipedia.org/wiki/Symptoms_of_COVID-19

    A difference between acute COVID-19 and PCC is the effect that it has on a person's mind. People are found to be dealing with brain fog and impaired memory, and diminished learning ability which has a large impact on their everyday lives.

  6. COVID-19 testing - Wikipedia

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

    COVID-19 Antigen Rapid Test Kit; the timer is provided by the user. Mucus from nose or throat in a test liquid is placed onto a COVID-19 rapid antigen diagnostic test device. COVID-19 rapid testing in Rwanda. An antigen is the part of a pathogen that elicits an immune response. Antigen tests look for antigen proteins from the viral surface.

  7. Mucosal immunology - Wikipedia

    en.wikipedia.org/wiki/Mucosal_immunology

    Mucosal immunology is the study of immune system responses that occur at mucosal membranes of the intestines, the urogenital tract, and the respiratory system. [1] The mucous membranes are in constant contact with microorganisms , food, and inhaled antigens . [ 2 ]

  8. Do I have a cold, the flu or COVID-19? Here's how to tell the ...

    www.aol.com/cold-flu-covid-19-heres-164740917.html

    Symptoms of COVID-19 include fever, cough, fatigue, headache, nausea, sore throat, runny nose and loss of taste or smell. COVID-19 also may cause long-lasting symptoms, unlike the flu or cold ...

  9. COVID-19 rapid antigen test - Wikipedia

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

    COVID-19 rapid antigen tests (RATs) have been widely used for diagnosis of COVID-19. The World Health Organization (WHO) COVID-19 Case Definition states that a person with a positive RAT (also known as an antigen rapid diagnostic test or Antigen-RDT) can be considered a "confirmed case of SARS-CoV-2 infection" in two ways. [10]