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Congressional Research Service
Inforrning the legislative debate since 1914


S


                                                                                         Updated August 7, 2025

Pandemic and All-Hazards Preparedness Act: An Overview


In 2006, the Pandemic and All-Hazards Preparedness Act
(PAHPA;  P.L. 109-417) authorized a suite of programs and
authorities within the Department of Health and Human
Services (HHS) to focus on public health emergency
preparedness and response. Congress has reauthorized
PAHPA   twice, in 2013 (P.L. 113-5) and in 2019 (P.L. 116-
22), both times with changes prompted by preceding public
health emergencies. Many existing PAHPA provisions
expired in September 2023. Congress has temporarily
extended several provisions until September 30, 2025 (P.L.
119-4) and previously deliberated a reauthorization.

Two  HHS  agencies administer most PAHPA-authorized
programs: (1) the Administration for Strategic Preparedness
and Response (ASPR), which leads the nation's public
health and medical response to emergencies, and (2) the
Centers for Disease Control and Prevention (CDC), a
leading agency for disease control and prevention and for
addressing public health threats. The Trump Administration
has proposed significant changes to PAHPA-authorized
programs in its FY2026 budget by proposing to eliminate
certain ASPR programs and to move other ASPR programs
to the CDC and to a new Assistant Secretary for a Healthy
Future. Certain proposals may require statutory changes to
take effect.

What Is Public Health Emergency
Management?
Many  types of emergencies involve a public health and
medical response component. To illustrate, during a natural
disaster, public health agencies might monitor associated
health effects while medical responders coordinate
emergency medical services. Alternately, some types of
emergencies, such as certain emerging infectious disease
outbreaks or bioterrorism events, have a primary impact on
human  health. Public health emergency management
involves a set of specific capabilities tailored to health
threats, for example, detection capabilities to identify and
monitor new health threats; systems to rapidly develop,
regulate, and distribute medical products to address health
threats (e.g., vaccines, treatments); policies and systems to
manage  surges in demand for medical care and supplies;
potential use of quarantine and isolation authorities; and
leadership and communication functions focused on health.

Under the National Response Framework (NRF), HHS
coordinates the public health and medical aspects of federal
emergency response. As with U.S. emergency management
generally, state, local, tribal, and territorial (SLTT)
governments are to lead public health emergency
preparedness and response efforts in their communities.
Federal agencies generally assist when SLTT communities
are overwhelmed, need additional expertise and/or federal
assets, or when an emergency spans many jurisdictions and


prompts a coordinated federally led response. HHS
agencies have programs and authorities tailored to the
unique needs and challenges posed by public health
emergencies-many   authorized in PAHPA.

PAHPA: An Overview
Though  PAHPA  has changed throughout its history, the law
has generally focused on a set of policy categories. The
following highlights some key provisions within each
category:

Leadership, strategy, and planning. In 2006, PAHPA
statutorily established that HHS is to lead federal public
health and medical response under the NRF. The law also
reauthorized and renamed the position of the Assistant
Secretary for Preparedness and Response to serve as
principal advisor for HHS emergency response. PAHPA
required the quadrennial publication of the National Health
Security Strategy (NHSS), wherein HHS anticipates health
emergency challenges and its planned approach.

SLTT  emergency  capacity. PAHPA  has reauthorized two
grant programs focused on supporting SLTT public health
and medical emergency response capacity: (1) the CDC's
Public Health Emergency Preparedness (PHEP) cooperative
agreement and (2) the ASPR's Hospital Preparedness
Program (HPP). In addition, PAHPA has included related
authorities. For example, the 2013 law amended the public
health emergency (PHE) declaration authority (Public
Health Service Act, PHSA §319) to allow for temporary
assignment of some state and local personnel during PHEs.

Medical countermeasures.  PAHPA  has included a suite of
programs and authorities aimed at enabling the
development, regulation, availability, and distribution of
medical countermeasures (MCMs). MCMs   are medical
products that may be used to mitigate, treat, prevent, or
diagnose conditions associated with emerging infectious
diseases or chemical, biological, radiological, or nuclear
(CBRN)  agents. For example, the 2006 law established the
Biomedical Advanced Research and Development
Authority (BARDA)  within ASPR to focus on MCM  late-
stage development, manufacturing, and purchase. In
addition, the 2013 law added a title focused on FDA
authorities and activities related to MCMs.

Medical response programs.  PAHPA  authorizes several
ASPR  medical response programs, such as the National
Disaster Medical System, which provides medical
personnel, equipment, and other support when requested by
states. In addition, the Strategic National Stockpile (SNS)
consists of medical products and ancillary supplies that can
be deployed to SLTT jurisdictions. The SNS includes
products tailored to specific health threats (e.g., smallpox


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