Prion, Viral, Bacterial and Fungal Pathogens of Animals, (New March 2000) 16 Prion, Viral, Bacterial and Fungal Pathogens of Humans, (New March 2000) 14 Man 12 Human diseases 11 Disease control 8 Protozoan, Helminth, Mollusc and Arthropod Parasites of Animals, (New March 2000) 7 Epidemiology 6 Infectious diseases 6 Non-communicable Diseases and Injuries of Animals 6 Prion diseases 6 Zoonoses 6 Animal Genetics and Breeding, (New March 2000) 5 Disease prevention 5 Host Resistance and Immunity 5 Immune system 5 Immunity 5 Livestock 5 Neoplasms 5 Nutrition related Disorders and Therapeutic Nutrition 5 Policy and Planning 5 Poultry 5 Protozoan, Helminth and Arthropod Parasites of Humans, (New March 2000) 5 Animal diseases 4 Bacterial diseases 4 Cattle 4 Diagnosis 4 Diagnosis of Animal Diseases, (New March 2000) 4 Food Contamination, Residues and Toxicology 4 Food safety 4 Fowls 4