TGFB1 and viral infectious disease: Enhanced expression or association with an elevated concentration of TGF-β1 in different viral infections have been thought or reported as a result of system or local immune response to protect against viral pathogens such as IAV, HIV, SARS-CoV-2, hepatitis E virus, chikungunya virus, Rift Valley Fever Virus, etc. [217,218,219,220,221,222,223].