Using workers from "hard-core" areas to increase immunization levels.
D000293:Adolescent; D001741:Black or African American; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D003153:Community Health Services / Q000706:statistics & numerical data; D006281:Health Occupations; D006801:Humans; D007114:Immunization / Q000706:statistics & numerical data*; D009825:Oklahoma; D011153:Population; D011203:Poverty; D011314:Preventive Health Services / Q000706:statistics & numerical data; D012959:Socioeconomic Factors; D000078329:Workforce