ISSN: 2578-5044
Authors: Nemat Khansari DVM*
Despite of having several effective COVID-19 vaccines such as Pfizer-BioNTech, Moderna, AstraZeneca, Sputnik V, and Sinophartm as examples, by now, we known that COVID-19 infection will stay with us for a long time similar to influenza and many other viral infections.
Keywords: Vitamin D3; Immunity; COVID-19; Vaccines
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