• 1
    Prins J, McCormack D, Michelson D, Horrell K. NIST/SEMATECH e-Handbook of Statistical Methods. Chapt Confidence Intervals. In: Engineering Statistics Handbook [Internet]. Gaithersburg ( MD ) : National Institute of Standards and Technology; 2010 [cited 2010 Sep 3]. Available from:
  • 2
    Hancock K, Veguilla V, Lu X, Zhong W, Butler E, Sun H, et al. Cross-reactive antibody responses to the 2009 pandemic H1N1 influenza virus. N Engl J Med. 2009;361(20):194552.
  • 3
    Kelly H, Grant K. Interim analysis of pandemic influenza (H1N1) 2009 in Australia: surveillance trends, age of infection and effectiveness of seasonal vaccination. Euro Surveill. 2009;14(31):6.
  • 4
    Garcia-Garcia L, Valdespino-Gómez J, Lazcano-Ponce E, Jimenez-Corona A, Higuera-Iglesias A, Cruz-Hervert P, et al. Partial protection of seasonal trivalent inactivated vaccine against novel pandemic influenza A/H1N1 2009: case-control study in Mexico City. BMJ. 2009:b3928.
  • 5
    Skowronski DM, De Serres G, Crowcroft NS, Janjua NZ, Boulianne N, Hottes TS, et al. Association between the 2008–09 seasonal influenza vaccine and pandemic H1N1 illness during Spring-Summer 2009: four observational studies from Canada. PLoS Med. 2010;7(4):e1000258. PubMed PMID: 20386731.