The following is a summary of some recent studies on COVID-19. They include research that warrants further study to corroborate the findings and that has yet to be certified by peer review.COVID-19 may reactivate a common virus that lurks unseen in most people, and that effect might increase patients' risk of certain long-lasting symptoms, according to preliminary findings from a study. More than 90 per cent of adults have been infected with Epstein-Barr virus .
The findings do not prove that EBV reactivation caused patients' symptoms, Henrich said. And even if it did,"There are likely many other causes of long COVID symptoms such as persistent SARS-CoV-2 virus in tissues over time and a dysregulated immune system that may arise from viral persistence," he said."Further study of various tissues is urgently needed, as are studies that follow participants from the time of acute infection to months or years thereafter.
The changes, which they attribute in part to the immune system's inflammatory response to the virus, were more pronounced in patients with severe COVID-19, they reported in the journal Metabolism https://www.metabolismjournal.com/article/S0026-049500114-7/fulltext. In test tube experiments, dexamethasone - which is known to benefit hospitalized patients with COVID-19 - helped relieve the adverse effects of the virus on the genes.
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