Non-specific effects of vaccination

BMJ 2005; 330 doi: https://doi.org/10.1136/bmj.330.7495.845 (Published 07 April 2005) Cite this as: BMJ 2005;330:845

Authors' reply to Aaby et al

  1. J Vaugelade, demographer (vaugelad@ird.fr),
  2. F Simondon, epidemiologist,
  3. E Elguero, statistician,
  4. S Pinchinat, biostatistician,
  5. G Guiella, researcher
  1. Institut de Recherche pour le Développement, Laboratoire Population, Environnement et Développement, BP 64501, 34394 Montpellier Cedex 5, France
  2. Biostatem, Parc Scientifique G Besse, F 30035 Nîmes, France
  3. Unité d'Etudes et de Recherche en Démographie, 03 BP 7118, Ouagadougou 03, Burkina Faso

    EDITOR—Aaby et al raise issues of general rather than specific interest, as their references indicate. The study of the effects of vaccines, which pioneered the randomised controlled trials method more than 50 years ago, is still topical and of general interest.1 The limitations discussed by Aaby et al …

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