{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T21:14:47Z","timestamp":1791234887704,"version":"4.1.0"},"reference-count":40,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2010,7,1]],"date-time":"2010-07-01T00:00:00Z","timestamp":1277942400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"},{"start":{"date-parts":[[2010,7,1]],"date-time":"2010-07-01T00:00:00Z","timestamp":1277942400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Public Health Rep"],"published-print":{"date-parts":[[2010,7]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives.<\/jats:title>\n                    <jats:p>We evaluated the association between intentional delay of vaccine administration and timely vaccination coverage.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods.<\/jats:title>\n                    <jats:p>We used data from 2,921 parents of 19- to 35-month-old children that included parents' reports of intentional delay of vaccine administration. Timely vaccination was defined as administration with \u22654 doses of diphtheria, tetanus, and pertussis; \u22653 doses of polio vaccine; \u22651 dose of measles, mumps, and rubella vaccine; \u22653 doses of Haemophilus influenzae type b vaccine; \u22653 doses of hepatitis B vaccine; and \u22651 dose of varicella vaccine by 19 months of age, as reported by vaccination providers.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results.<\/jats:title>\n                    <jats:p>In all, 21.8% of parents reported intentionally delaying vaccinations for their children. Among parents who intentionally delayed, 44.8% did so because of concerns about vaccine safety or efficacy and 36.1% delayed because of an ill child. Children whose parents intentionally delayed were significantly less likely to receive all vaccines by 19 months of age than children whose parents did not delay (35.4% vs. 60.1%, p&lt;0.05). Parents who intentionally delayed were significantly more likely to have heard or read unfavorable information about vaccines than parents who did not intentionally delay (87.6% vs. 71.9%, p&lt;0.05). Compared with parents who intentionally delayed only because their child was ill, parents who intentionally delayed only because of vaccine safety or efficacy concerns were significantly more likely to seek additional information about their decision from the Internet (11.4% vs. 1.1%, p&lt;0.05), and significantly less likely to seek information from a doctor (73.9% vs. 93.9%, p&lt;0.05).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions.<\/jats:title>\n                    <jats:p>Intentionally delayed vaccine doses are not uncommon. Children whose parents delay vaccinations may be at increased risk of not receiving all recommended vaccine doses by 19 months of age and are more vulnerable to vaccine-preventable diseases. Providers should consider strategies such as educational materials that address parents' vaccine safety and efficacy concerns to encourage timely vaccination.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/003335491012500408","type":"journal-article","created":{"date-parts":[[2017,7,3]],"date-time":"2017-07-03T23:43:42Z","timestamp":1499125422000},"page":"534-541","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":132,"title":["The Association between Intentional Delay of Vaccine Administration and Timely Childhood Vaccination Coverage"],"prefix":"10.1177","volume":"125","author":[{"given":"Philip J.","family":"Smith","sequence":"first","affiliation":[{"name":"Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Disease, Atlanta, GA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sharon G.","family":"Humiston","sequence":"additional","affiliation":[{"name":"University of Rochester School of Medicine and Dentistry, Department of Emergency Medicine, Rochester, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Trish","family":"Parnell","sequence":"additional","affiliation":[{"name":"Parents of Kids with Infectious Diseases, Vancouver, WA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kirsten S.","family":"Vannice","sequence":"additional","affiliation":[{"name":"National Vaccine Program Office, Washington, DC"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel A.","family":"Salmon","sequence":"additional","affiliation":[{"name":"National Vaccine Program Office, Washington, DC"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2016,8,2]]},"reference":[{"key":"bibr1-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1001\/jama.298.18.2155"},{"key":"bibr2-003335491012500408","volume-title":"Immunization safety review: Vaccines and autism","author":"Immunization Safety Review Committee","year":"2004"},{"key":"bibr3-003335491012500408","unstructured":"Harris G. Deal in an autism case fuels debate on vaccine. New York Times; 2008 Mar 8. Also available from: URL: http:\/\/www.nytimes.com\/2008\/03\/08\/us\/08vaccine.html [cited 2008 Dec 17]."},{"key":"bibr4-003335491012500408","unstructured":"Food and Drug Administration (US). Thimerosal in vaccines [cited 2008 Dec 17]. Available from: URL: http:\/\/www.fda.gov\/CbER\/vaccine\/thimerosal.htm#tox"},{"key":"bibr5-003335491012500408","doi-asserted-by":"crossref","first-page":"1039","DOI":"10.1542\/peds.112.5.1039","volume":"112","author":"Verstraeten T","year":"2003","journal-title":"Pediatrics"},{"key":"bibr6-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2003-1177-L"},{"key":"bibr7-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1515\/come.2004.1.2.171"},{"key":"bibr8-003335491012500408","volume-title":"Mother warriors: A nation of parents healing autism against all odds","author":"McCarthy J","year":"2008"},{"issue":"34","key":"bibr9-003335491012500408","first-page":"786","volume":"53","year":"2004","journal-title":"MMWR Morb Mortal Wkly Rep"},{"key":"bibr10-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM200102223440804"},{"key":"bibr11-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMp0802904"},{"key":"bibr12-003335491012500408","volume-title":"The vaccine book: Making the right decision for your child (Sears Parenting Library)","author":"Sears R","year":"2007"},{"issue":"4","key":"bibr13-003335491012500408","first-page":"Q1","volume":"52","year":"2003","journal-title":"MMWR Morb Mortal Wkly Rep"},{"key":"bibr14-003335491012500408","volume-title":"SUDAAN\u00ae: Release 8.0","author":"Research Triangle Institute","year":"2002"},{"key":"bibr15-003335491012500408","unstructured":"Smith PJ, Hoaglin DC, Battaglia MP, Khare M, Barker LE. Statistical methodology of the National Immunization Survey, 1994\u20132002. Vital Health Stat 2 2005(138). Also available from: URL: http:\/\/www.cdc.gov\/nchs\/data\/series\/sr_02\/sr02_138.pdf [cited 2008 Dec 5]."},{"key":"bibr16-003335491012500408","volume-title":"Health alert network 2009: Health alert #152. Three confirmed cases of measles in a Westmoreland County household","author":"Pennsylvania Department of Health","year":"2009"},{"key":"bibr17-003335491012500408","volume-title":"Health alert network 2009: Health alert #153. Management of measles exposure in Allegheny County","author":"Pennsylvania Department of Health","year":"2009"},{"issue":"33","key":"bibr18-003335491012500408","first-page":"893","volume":"57","year":"2008","journal-title":"MMWR Morb Mortal Wkly Rep"},{"issue":"8","key":"bibr19-003335491012500408","first-page":"203","volume":"57","year":"2008","journal-title":"MMWR Morb Mortal Wkly Rep"},{"key":"bibr20-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1542\/peds.101.5.e5"},{"key":"bibr21-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1542\/peds.114.1.187"},{"key":"bibr22-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1001\/jama.282.1.47"},{"key":"bibr23-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1093\/aje\/kwn263"},{"key":"bibr24-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1093\/poq\/nfm047"},{"key":"bibr25-003335491012500408","doi-asserted-by":"publisher","DOI":"10.2105\/AJPH.2008.152835"},{"issue":"10","key":"bibr26-003335491012500408","first-page":"189","volume":"50","year":"2001","journal-title":"MMWR Morb Mortal Wkly Rep"},{"issue":"9","key":"bibr27-003335491012500408","first-page":"190","volume":"51","year":"2002","journal-title":"MMWR Morb Mortal Wkly Rep"},{"key":"bibr28-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1177\/003335490411900207"},{"issue":"2","key":"bibr29-003335491012500408","first-page":"31","volume":"51","year":"2002","journal-title":"MMWR Morb Mortal Wkly Rep"},{"key":"bibr30-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1542\/peds.102.4.e47"},{"key":"bibr31-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1001\/archpedi.159.5.470"},{"key":"bibr32-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2006-0923"},{"key":"bibr33-003335491012500408","doi-asserted-by":"publisher","DOI":"10.1016\/S0749-3797(99)00118-X"},{"key":"bibr34-003335491012500408","unstructured":"Centers for Disease Control and Prevention (US). 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