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Table 1 Vaccine strategies evaluated in the study

From: Extending the elderly- and risk-group programme of vaccination against seasonal influenza in England and Wales: a cost-effectiveness study

   Base policy
   No vaccination Risk group only (Pre-2000 ) Risk group and elderly (Post-2000) Risk group (75 %) and elderly
Extension None X X X X
2–4 years 50 % 50 % 15 % 30 % 50 % 70 % 50 %
50–64 years 50 % 50 % 15 % 30 % 50 % 70 % 50 %
5–16 years 50 % 50 % 15 % 30 % 50 % 70 % 50 %
2–4 and 50–64 years 50 % 50 % 15 % 30 % 50 % 70 % 50 %
2–16 years 50 % 50 % 15 % 30 % 50 % 70 % 50 %
2–16 and 50–64 years 50 % 50 % 15 % 30 % 50 % 70 % 50 %
2–64 years 50 % 50 % 15 % 30 % 50 % 70 % 50 %
  1. Vaccination strategies evaluated in this study. Strategies are built on a base policy and an extension to groups among the population at low risk of complications. Coverage figures are for the extension while for the base policy historical figures observed other the length of the study are used. A total of 53 scenarios have been evaluated, each of them represented by a cell in this table