Letters to the Editors
St John
Ronald
R
D000818:Animals; D001717:Birds; D003462:Cuba; D004196:Disease Outbreaks / Q000517:prevention & control*; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D005585:Influenza in Birds / Q000453:epidemiology* / Q000517:prevention & control*; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control*