Rosenthal, JorgeRaymond, DawnMorita, JulieMcCauley, MaryDiaz, PamDavid, FelicitaRodewald, LanceSince the measles resurgence of 1989–1991, which affected predominantly inner-city preschoolers, national vaccination rates have risen to record-high levels, but rates among inner-city, preschool-aged, African-American children lag behind national rates. The threat of measles importations from abroad exists and may be particularly important in large U.S. cities. To stop epidemic transmission, measles vaccination coverage should be at least 80%.HealthPharmacotherapyHealth Risk FactorsResearchmeaslespre-schoolersvaccinationsAfrican AmericanChicagoblackschildpreschooldisease transmissionimmunizationinfantArticle