How does Rx Response determine a severe public health emergency?

Because existing relief plans and emergency medical service programs are sufficient to address local or smaller regional public health emergencies, the Rx Response program will focus on addressing
major domestic public health emergencies of national significance rather than those emergencies that affect a limited population or geographic area. While public health emergencies will be determined on a case-by-case basis, there are a number of existing
mechanisms that will be used by Rx Response to help guide decision-making:

_disaster declaration by a U.S. Governor or the U.S. President;
_American Red Cross Level V+ Event;
_ Department of Homeland Security (DHS) Severe Classification;
_ World Health Organization (WHO) Phase IV+ Event;
_ Health and Human Services (HHS) Stage 2+ Event;
_ other situations warranting a response as determined by the respective decision-making bodies within the represented industry groups.