Columbia subject headings:
Epidemics--United States--Prevention.
Health planning--United States.
Influenza vaccines--United States.
Influenza--Government policy--United States.
Influenza--United States--Prevention.
Intergovernmental cooperation--United States--Planning.
Harvard subject headings:
Epidemics--United States--Prevention.
Health planning--United States.
Influenza vaccines--United States.
Influenza--Government policy--United States.
Influenza--United States--Prevention.
Intergovernmental cooperation--United States--Planning.
Princeton subject headings:
Epidemics--United States--Prevention.
Health planning--United States.
Influenza vaccines--United States.
Influenza--Government policy--United States.
Influenza--United States--Prevention.
Intergovernmental cooperation--United States--Planning.