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Biological washing powders as allergens

BMJ 1995; 310 doi: (Published 21 January 1995) Cite this as: BMJ 1995;310:195
  1. Michael Flindt
  1. Retired consultant in occupational medicine Cautley, Sedbergh, Cumbria LA1 5LU

    EDITOR,—A paper by me1 is cited by P J Rees in the reply to a query on whether biological washing powders might be a new allergen.2 Rees states that I reported late onset asthma in workers in factories producing these powders. In fact, the proteolytic enzyme was found to be a potent respiratory sensitiser, causing immediate and late asthma mediated by IgE in both atopic and non-atopic subjects, few of whom had had asthma …

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