Columbia subject headings:
Harvard subject headings:
Emergency management--Government policy--United States--Planning.
Epidemics--Government policy--United States.
Influenza--Government policy--United States.
Swine influenza--Government policy--United States.
United States--Politics and government.
Princeton subject headings:
Emergency management--Government policy--United States--Planning.
Epidemics--Government policy--United States.
Influenza--Government policy--United States.
Swine influenza--Government policy--United States.
United States--Politics and government.