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BMC Ophthalmology - COVID-19, caused by SARS-CoV-2, may lead to long-term retinal changes. Visual symptoms and retinal alterations have been reported in Long COVID; however, the available evidence...

In the week ending Dec. 20, one in four (25.6 per cent) of every influenza test conducted in the U.S. came back positive, the U.S. CDC said.