Erratum to “The limitations of a feed/water based heat-stable vaccine delivery system for Newcastle disease-control strategies for backyard poultry flocks in sub-Saharan Africa”: [Prev. Vet. Med. 47 (2000) 271–279]
Department of Agriculture, Veterinary Epidemiology and Economics Research Unit, The University of Reading, Earley Gate, P.O. Box 236, Reading RG6 6AT, UK