2023-05-21 04:54:38
Scientists have found that infection with the Corona virus may cause changes in the immune system of those infected, while there are still no effective treatments that treat the symptoms of the disease.
Researchers from the National Institute of Health in the United States conducted tests to find out the changes in the bodies of people who had been infected with corona for a long time, and their results were compared with healthy people.
The results showed that the number of “immune cells” had clear differences between those with corona for a long time and other healthy people, according to a report published by the “”Sens AlertCiting a study published in the journalNorologyScientific Neurology.
And the researchers sought to reach extreme indicators in blood samples, cerebrospinal fluid, or any changes that might appear in magnetic resonance imaging, not to mention examinations to monitor any abnormality in the nervous system.
Among those infected with Corona for long periods of time, there were middle-aged women who had a mild infection for more than 9 months, but who continued to have symptoms of “fatigue and cognitive difficulties” that greatly affected their lives.
The results reveal that corona infection has reduced the number of “immune cells known as T cells”, which remain in the body for a period even after infection, and have the ability to recognize an external body that enters the body to confront and fight it.
Corona infection also increased the number of what is known as B immune cells, which detect and fight foreign cells, not to mention an increase in other immune cells, which may indicate “depletion of the immune system.”
The researchers said, “The persistence of immune abnormalities several months after infection with Corona infection indicates the possibility of a persistent infection or an abnormal immune response to infection.”
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Corona patients who participated in the tests also reported a rapid heartbeat, dizziness, and a feeling of fainting when moving from a sitting to a standing position, which is known as “postural tachycardia syndrome.”
The Corona pandemic has killed more than 7 million people since the first cases were reported in China at the end of 2019, and more than 765 million infections have been confirmed by the World Health Organization, according to figures that are certainly much lower than reality, according to the organization.
Several vaccines have emerged, of which more than 13.3 billion doses have been administered as of early May.
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