The W.H.O. announced on Feb. 11 a new name for the disease caused by the current novel coronavirus epidemic: Coronavirus Disease 2019 (COVID-19). As for the virus itself, the International Committee on Taxonomy of Viruses has decided on SARS-CoV-2, which “formally recognizes this virus as a sister to severe acute respiratory syndrome coronaviruses.” #COVID19 and #SARSCoV2 are the common social media signatures we are encouraging people use.