title: Note from the editors: a new virus bringing back memories from the past.
mesh_terms: D017934:Coronavirus / Q000302:isolation & purification*; D018352:Coronavirus Infections / Q000821:virology*; D003937:Diagnosis, Differential; D004196:Disease Outbreaks / Q000517:prevention & control; D006801:Humans; D007373:Interinstitutional Relations; D007391:International Cooperation; D018570:Risk Assessment; D012529:Saudi Arabia; D045169:Severe Acute Respiratory Syndrome / Q000175:diagnosis / Q000635:transmission / Q000821:virology; D014195:Travel