title: Four at-risk groups will be first to be vaccinated against swine flu, says chief medical officer.
authors.forename: Paul
authors.initials: P
authors.lastname: Dinsdale
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004739:England; D005260:Female; D006282:Health Personnel; D006801:Humans; D007223:Infant; D053118:Influenza A Virus, H1N1 Subtype; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000517:prevention & control*; D008875:Middle Aged; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000517:prevention & control; D012307:Risk Factors; D055815:Young Adult
chemical_list: D007252:Influenza Vaccines