| A |
High |
High morbidity and mortality, easily disseminated, cause public panic, require special public health preparedness. |
Anthrax, Smallpox, Ebola Virus, Bubonic Plague, Tularemia. |
| B |
Moderate |
Moderate morbidity and mortality, require moderate diagnostic and surveillance efforts, have moderate dissemination potential. |
Brucellosis, Q fever, Staphylococcal enterotoxin B. |
| C |
Low |
Emerging pathogens that could be engineered for mass dissemination; include known viruses and bacteria, and potential future threats. |
Hantavirus, Nipah Virus, SARS, Yellow fever virus. |