Columbia subject headings:
Harvard subject headings:
Communicable diseases in children--United States--Prevention.
Federal aid to child health services--United States.
Immunization of children--United States.
Vaccination of children--Law and legislation--United States.
Princeton subject headings:
Communicable diseases in children--United States--Prevention.
Federal aid to child health services--United States.
Immunization of children--United States.
Vaccination of children--Law and legislation--United States.