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  2. Is It Holiday Fatigue Or Covid-19? Here Are The Symptoms To ...

    www.aol.com/holiday-fatigue-covid-19-symptoms...

    But Russo says that XEC doesn’t have any major symptoms that are different from previous version of COVID-19. According to the CDC, symptoms ... Headache. Nausea or vomiting. ... to cause severe ...

  3. Is Headache a Sign of COVID-19? What to Know, and How ... - AOL

    www.aol.com/lifestyle/headache-sign-covid-19...

    While COVID-19 can cause a headache, doctors say it isn’t the most common coronavirus symptom. Here’s when to see your doctor about your pounding head.

  4. SARS-CoV-1 - Wikipedia

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

    Scanning electron micrograph of SARS virions. Severe acute respiratory syndrome (SARS) is the disease caused by SARS-CoV-1. It causes an often severe illness and is marked initially by systemic symptoms of muscle pain, headache, and fever, followed in 2–14 days by the onset of respiratory symptoms, [13] mainly cough, dyspnea, and pneumonia.

  5. Symptoms of COVID-19 - Wikipedia

    en.wikipedia.org/wiki/Symptoms_of_COVID-19

    Three common clusters of symptoms have been identified: a respiratory symptom cluster with cough, sputum, shortness of breath, and fever; a musculoskeletal symptom cluster with muscle and joint pain, headache, and fatigue; and a cluster of digestive symptoms with abdominal pain, vomiting, and diarrhea. [5]

  6. A new COVID-19 variant is circulating. Here's what to know ...

    www.aol.com/covid-19-variant-circulating-heres...

    What are COVID-19 symptoms? Some of the symptoms of COVID-19 include: Fever or chills. Cough. Shortness of breath or difficulty breathing. Fatigue. Muscle or body aches. Headache. Loss of taste or ...

  7. COVID-19 pandemic - Wikipedia

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

    A COVID-19 vaccine is intended to provide acquired immunity against severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2), the virus that causes coronavirus disease 2019 . Prior to the COVID-19 pandemic, an established body of knowledge existed about the structure and function of coronaviruses causing diseases like severe acute ...

  8. Your winter illness guide: What to know about COVID symptoms ...

    www.aol.com/lifestyle/winter-illness-guide-why...

    “Norovirus is the leading cause of vomiting and diarrhea from acute gastroenteritis in the U.S., responsible for 58% of foodborne illnesses and about 2,500 outbreaks annually,” Justman says.

  9. Catarrh - Wikipedia

    en.wikipedia.org/wiki/Catarrh

    Catarrh (/ k ə ˈ t ɑːr / kə-TAR) is an inflammation of mucous membranes in one of the airways or cavities of the body, [1] [2] usually with reference to the throat and paranasal sinuses. It can result in a thick exudate of mucus and white blood cells caused by the swelling of the mucous membranes in the head in response to an infection.