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In COVID-19, the arterial and general tissue oxygen levels can drop without any initial warning.The chest x-ray may show diffuse pneumonia.Cases of silent hypoxia with COVID-19 have been reported for patients who did not experience shortness of breath or coughing until their oxygen levels had depressed to such a degree that they were at risk of acute respiratory distress (ARDS) and organ failure.
Longer-term effects of COVID-19 have become a prevalent aspect of the disease itself. These symptoms can be referred to by many names including post-COVID-19 syndrome, long COVID, and long haulers syndrome. An overall definition of post-COVID conditions (PCC) can be described as a range of symptoms that can last for weeks or months. [83]
Hypotheses include lasting damage to organs and blood vessels, problems with blood clotting, neurological dysfunction, persistent virus or a reactivation of latent viruses and autoimmunity. [3] Diagnosis of long COVID is based on (suspected or confirmed) COVID-19 infection or symptoms—and by excluding alternative diagnoses. [7] [8]
COVID-19 often shares a lot of the same symptoms as influenza, including stuffy or runny nose, sore throat, cough, muscle aches, fatigue and fever or chills. But unlike the flu, COVID symptoms can ...
“The symptoms of JN.1 seem to be very similar, if not the same, as others,” said Dr. Molly Fleece, a hospital epidemiologist at University of Alabama at Birmingham Medicine.
A growing body of evidence suggests those who have blood type O may be less likely to contract coronavirus and typically experience less severe symptoms when they do come down with the illness.
DIC may cause a range of symptoms, including abnormal bleeding, breathlessness, chest pain, neurological symptoms, low blood pressure, or swelling. [28] COVID‑19 vaccines have some adverse effects that are listed as common in the two or three days following vaccination which are usually mild and temporary. [21]
They also answer questions related to common COVID-19 symptoms, and input any illness or symptoms that they have, [5] [2] as well as stating whether they have been tested for COVID-19. [20] Beginning in May 2020, a random sample of users is selected (on the first day they report symptoms) for a swab test. [9]