Thoughts on cuurent anthelmintic needs and usage

Abstract

It is generally agreed that infection with nematodes is common in the United States. The degree of severity and economic impact is not commonly agreed on by experts. When we think of parasitism we are generally thinking in terms of a production disease rather than one affecting life and death situations. Certainly, clinically obvious parasitism does occur and signs are recognizable, especially in cattle originating from areas in which climatic conditions favor the survival and development of these parasites.