Emergency management Prevention Terrorism 78 National security 41 Government policy 32 Bioterrorism 26 Civil defense 21 more ... Epidemics 18 Finance 17 Planning 13 Evaluation 12 Security measures 10 Influenza 8 States 7 Biological warfare 6 Disaster medicine 6 Disaster relief 6 Law and legislation 6 Management 6 Public health 6 Public health surveillance 6 H1N1 influenza 5 Vaccination 5 Defenses 4 Hazard mitigation 4 Health planning 4 Imagery (Psychology) 4 Public health administration 4 Reorganization 4 Research 4 less ...