Acknowledgments
The authors wish to thank all farmers, veterinarians and
staff involved in this study (especially Jean-Yves Audiart),
the members of the laboratory IDAC (Nantes, France) and
the laboratory IDHESA (Quimper, France) for their
technical assistance, CEVA Sante´ Animale, the Groupements
de De´ fense Sanitaire of Western France and the
Direction Ge´ne´ rale de l’Alimentation (DGAl) for their
financial support. Thoughtful comments from Henri
Seegers are gratefully acknowledged.