To find articles on this subject, use CAB, Medline, Biological Abstracts and Agricola databases. Although generally recommended for veterinary topics, Cornell's Consultant does not include many relevant publications for epidemiology since it is so strongly oriented to disease intervention.
Some publications are online fulltext, but most can be ordered at no cost.
Submit orders directly to the email address listed and allow some time to meet deadlines. United States Animal Health Association Proceedings - 1998 and 1999 are available in full text online.