H1N1 vaccination begins as proportion of cases in hospital admitted to intensive care rises.
Cook
Sophie
S
D003422:Critical Care / Q000706:statistics & numerical data*; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000517:prevention & control*; D006113:United Kingdom; D014611:Vaccination
D007252:Influenza Vaccines