RT Journal Article SR Electronic T1 Exemptions, lagging vaccinations hurting work to contain measles in US JF The Nation's Health JO Nations Health FD American Public Health Association SP 1 OP 17 VO 56 IS 6 A1 McGill, Natalie YR 2026 UL http://www.thenationshealth.org/content/56/6/1.2.abstract AB