title: Hay fever tightens its grip.
abstract: The nature of hay fever is changing, with the season lasting longer and people in their middle years being affected for the first time.
authors.forename: Lynne
authors.initials: L
authors.lastname: Wallis
mesh_terms: D002986:Clinical Trials as Topic; D003710:Demography; D006801:Humans; D008875:Middle Aged; D015995:Prevalence; D006255:Rhinitis, Allergic, Seasonal / Q000453:epidemiology* / Q000628:therapy; D006113:United Kingdom / Q000453:epidemiology