Biological warfare Prevention Bioterrorism 30 Biological weapons 10 Safety measures 9 Research 7 Agroterrorism 6 more ... Communicable diseases 6 Biological arms control 5 Evaluation 5 National security 5 Emergency management 4 Moral and ethical aspects 4 Public health surveillance 4 Standards 4 World health 4 Diseases 3 Insects as carriers of disease 3 Interagency coordination 3 Planning 3 Public health 3 Public health laws 3 Risk assessment 3 Security measures 3 Terrorism 3 Agriculture 2 Animal culture 2 Animals 2 Asymmetric warfare 2 Biology 2 less ...