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Risk of botulism for laying hens and broilers
  1. Simon P. Hardy,
  2. Bruce David and
  3. Magne Kaldhusdal
  1. Norwegian Veterinary Institute, PO Box 750 Sentrum, 0106 Oslo, Norway
  1. e-mail: simon-paul.hardy{at}

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WE read with interest the short communication reporting on an outbreak of type C botulism in laying hens by Sharpe and others (2011). It is a timely reminder of the economic and welfare costs of the disease in the chicken industry. The authors correctly point out the increased risk of botulism if laying birds have access to toxin-laden carcases.

The authors have developed an argument that …

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