There are different categories of weapons of mass effect—chemicals, biological pathogens and toxins, radioactive materials, nuclear devices, and nonconventional high-yield explosives. Out of these, biological weapons are used in a terrorism type called bioterrorism. According to the Department of Health and Human Services (HHS), there are the six focus areas for preparedness and response to bioterrorism and other outbreaks that are detrimental to public health.