title: WHO tags 1999-2000 vaccine, prepares flu pandemic plan.
mesh_terms: D004196:Disease Outbreaks / Q000517:prevention & control*; D006285:Health Planning; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000517:prevention & control*; D014944:World Health Organization
chemical_list: D007252:Influenza Vaccines