Letters

Public should be told that vaccines may have long term adverse effects

BMJ 1999; 318 doi: https://doi.org/10.1136/bmj.318.7177.193 (Published 16 January 1999) Cite this as: BMJ 1999;318:193
  1. John Barthelow Classen (Classen@vaccines.net), President.*,
  2. David C Classen, Infectious disease physician.*
  1. Classen Immunotherapies, 6517 Montrose Avenue, Baltimore, MD 21212, USA
  2. Division of Infectious Diseases, LDS Hospital, Salt Lake City, UT, USA

    EDITOR—Jefferson's editorial about vaccination and its adverse effects mentions our research.1 We found that immunisation starting at birth was associated with a decreased risk of insulin dependent diabetes, while immunisation starting after age 2months was associated with an increased risk of diabetes in both rodents and humans.2 We initiated a collaboration with Dr Jaakko Tuomilehto to study the effect of Haemophilus influenzae type b vaccine on the incidence of diabetes. Roughly116000 Finnish children were randomised to receive either four doses of the vaccine, starting at …

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