title: Pandemic paradox: new flu virus keeps researchers and health officials guessing.
authors.affiliation: Princeton, NJ, USA. chandra@nasw.org
authors.forename: Chandra
authors.initials: C
authors.lastname: Shekhar
mesh_terms: D000956:Antigens, Viral / Q000235:genetics; D005075:Biological Evolution; D004196:Disease Outbreaks; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000235:genetics / Q000276:immunology; D007251:Influenza, Human / Q000628:therapy; D014612:Vaccines; D014764:Viral Proteins / Q000235:genetics
chemical_list: D000956:Antigens, Viral; D014612:Vaccines; D014764:Viral Proteins