The head of emergencies at the World Health Organization said on Wednesday it's becoming clear that many who develop over moderate illness from COVID-19 face long-term issues like fatigue. Dr. Michael Ryan said the virus can lead to an inflammatory process in air sacs and small blood vessels, and as a result it can take a long time for lung and heart functions to get back to normal, even for otherwise healthy young people.
WHO Says Even Survivors of Mild COVID Cases May Need Months To Recover
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