rthomyxoviridae are divided into four genera: Alphainfluenzavirus, Betainfluenzavirus, Gammainfluenzavirus and Deltainfluenzavirus (previously, Influenzavirus A, B, C and D, respectively). CoVs in the subfamily Orthocoronavirinae of the family Coronaviridae are divided into four genera: Alphacoronavirus (αCoV, previously group 1), Betacoronavirus (βCoV, previously gr