The Arizona Partnership for Immunization, also known as TAPI, was founded in 1992 to address concerns of under-immunization of Arizona preschoolers. Since then, TAPI has expanded its focus to the health care needs specific to infants, children, and families throughout Arizona.

TAPI’s mission is “to foster a comprehensive, sustained community program for the immunization of Arizonans against vaccine preventable diseases." TAPI undertakes this mission by developing and coordinating immunization education programs, distributing and documenting immunizations in a variety of settings, and advocating for better health care needs in the public and private sector.