title: Progress with PETS: continuing concerns and experience to date.
mesh_terms: D000823:Animal Identification Systems; D000818:Animals; D000829:Animals, Domestic; D003141:Communicable Diseases / Q000635:transmission / Q000662:veterinary*; D004199:Disease Vectors; D006801:Humans; D012952:Societies; D014195:Travel; D006113:United Kingdom; D014730:Veterinary Medicine