Vaccine Related, Health Services, Emerging Infectious Diseases, Prevention, Patient Safety, Clinical Research, Infectious Diseases, 7 Management of diseases and conditions, 7.3 Management and decision making, 4 Quality Education, Awareness, Bioterrorism, Chi-Square Distribution, Clinical Competence, Education, Medical, Continuing, Emergency Medical Services, Emergency Service, Hospital, Female, Humans, Internet, Male, Medical Staff, Hospital, Probability, Sensitivity and Specificity, United States