title: Swine flu attention turns to the tropics.
authors.forename: Declan
authors.initials: D
authors.lastname: Butler
mesh_terms: D000818:Animals; D001717:Birds / Q000821:virology; D003906:Developing Countries; D005843:Geography; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000235:genetics / Q000302:isolation & purification* / Q000472:pathogenicity*; D007251:Influenza, Human / Q000191:economics / Q000453:epidemiology* / Q000517:prevention & control / Q000821:virology*; D011159:Population Surveillance; D016865:Reassortant Viruses / Q000235:genetics / Q000472:pathogenicity; D013552:Swine / Q000821:virology; D013997:Time Factors; D014329:Tropical Climate