Some new or little-known respiratory viruses.
D000818:Animals; D006801:Humans; D005585:Influenza in Birds; D007251:Influenza, Human; D009975:Orthomyxoviridae; D012137:Respiratory System; D012141:Respiratory Tract Infections; D013552:Swine; D014777:Virus Diseases; D014780:Viruses
RESPIRATORY TRACT/infections; VIRUS DISEASES