title: Avian flu special: masking our ignorance.
authors.forename: David
authors.initials: D
authors.lastname: Cyranoski
mesh_terms: D006801:Humans; D007251:Influenza, Human / Q000517:prevention & control* / Q000635:transmission; D008397:Masks / Q000706:statistics & numerical data*; D045169:Severe Acute Respiratory Syndrome / Q000517:prevention & control / Q000635:transmission; D014944:World Health Organization