From the Document, "Prescription medications are often a critical part of effective healthcare. Shortages can arise from manufacturing or distribution issues, an increase in demand, or, in a disaster situation, a lack of available distribution locations. Medication shortages can cause inadequate treatment, and may require triage, substitution, and crisis care strategies. [...] This Assistant Secretary for Preparedness and Response (ASPR) Technical Resources, Assistance Center, and Information Exchange (TRACIE) factsheet supplements the Pharmacy Topic Collection and includes recent resources that provide an overview of the situation and how it can worsen during emergencies. These resources can help healthcare providers prepare for and respond to shortages and other pharmaceutical-related challenges that may arise during and after a disaster."
ASPR TRACIE: https://asprtracie.hhs.gov/