The need for integrated control programs for zoonoses affecting livestock.

Prior to recognition of etiologic agents of zoonoses (infections transmitted between animals and man), physicians encountered these illnesses in man and veterinarians observed them in animals. As the agents were identified, interspecies relationships (and spread) became evident and control programs evolved without consideration of cost-effectiveness. Today, the public demands efficient use of financial resources. Human health as well as economic losses are concerns of animal health agencies. Zoonoses affecting livestock, though not major priorities among public health agencies, cannot be ignored. It seems economical, therefore, to combine the efforts of these agencies in zoonoses control. This would benefit human health by reducing the animal reservoirs and the livestock industry will benefit by lowered production costs.