title: Influenza, new strains for '72.
mesh_terms: D004196:Disease Outbreaks / Q000382:microbiology*; D006801:Humans; D007251:Influenza, Human / Q000382:microbiology*; D009975:Orthomyxoviridae / Q000302:isolation & purification* / Q000472:pathogenicity; D013997:Time Factors