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  2. Symptoms of COVID-19 - Wikipedia

    en.wikipedia.org/wiki/Symptoms_of_COVID-19

    However, the absence of the symptom itself at an initial screening does not rule out COVID-19. Fever in the first week of a COVID-19 infection is part of the body's natural immune response; however in severe cases, if the infections develop into a cytokine storm the fever is counterproductive. As of September 2020, little research had focused ...

  3. Coronavirus - Wikipedia

    en.wikipedia.org/wiki/Coronavirus

    Infectious bronchitis virus (IBV), a type of coronavirus, causes avian infectious bronchitis. [131] The virus is of concern to the poultry industry because of the high mortality from infection, its rapid spread, and its effect on production. [127] The virus affects both meat production and egg production and causes substantial economic loss. [132]

  4. SARS-CoV-1 - Wikipedia

    en.wikipedia.org/wiki/SARS-CoV-1

    In the experiments, macaques infected with the virus developed the same symptoms as human SARS patients. [11] A virus very similar to SARS was discovered in late 2019. This virus, named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is the causative pathogen of COVID-19, the propagation of which started the COVID-19 pandemic. [12]

  5. A new coronavirus variant is taking over, but its symptoms ...

    www.aol.com/news/coronavirus-variant-taking-over...

    It accounted for 27% of genetic sequences submitted to a global virus database called GISAID in the week that ended Dec. 3, up from 10% in the week that ended Nov. 19.

  6. Human coronavirus NL63 - Wikipedia

    en.wikipedia.org/wiki/Human_Coronavirus_NL63

    It is difficult to distinguish between symptoms caused by infection of the HCoV-NL63 virus and those caused by other common human viruses, making diagnosis and detection complex. Reverse transcription polymerase chain reaction of samples collected through nasopharyngeal swab is the most commonly used method for detection of the virus. [ 10 ]

  7. A New COVID Variant May Trigger a Never-Before-Seen Symptom ...

    www.aol.com/covid-variant-may-trigger-never...

    A new COVID-19 subvariant, known as XBB.1.16 but often called "Arcturus," has progressively become more viral here in the United States, accounting for 10% of infections through late April.

  8. The common symptoms doctors think may also be linked to ... - AOL

    www.aol.com/news/common-symptoms-doctors-think...

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  9. Coronavirus diseases - Wikipedia

    en.wikipedia.org/wiki/Coronavirus_diseases

    Coronavirus diseases are caused by viruses in the coronavirus subfamily, a group of related RNA viruses that cause diseases in mammals and birds. In humans and birds, the group of viruses cause respiratory tract infections that can range from mild to lethal.