Epidemiology 3 Helminthoses 3 Human diseases 3 Protozoan, Helminth and Arthropod Parasites of Humans, (New March 2000) 3 Bacterial diseases 2 Communicable Diseases 2 Eucestoda 2 more ... Helminths 2 Immunology 2 Nematoda 2 Parasitoses 2 Pets 2 Pets and Companion Animals 2 Prion, Viral, Bacterial and Fungal Pathogens of Humans, (New March 2000) 2 Protozoal infections 2 Public health 2 Taxonomy and Evolution 2 Trematoda 2 Viral diseases 2 Zoonoses 2 Acanthocephala 1 Animal Genetics and Breeding, (New March 2000) 1 Animal Immunology, (New March 2000) 1 Animal Reproduction and Embryology, (New March 2000) 1 Animal Welfare 1 Animal parasitic nematodes 1 Animal welfare 1 Animals as carriers of disease 1 Attitudes 1 Biological Resources (General) 1 less ...