Completeness and timeliness of diphtheria-tetanus-pertussis,measles-mumps-rubella,and polio vaccines in young children with chronic health conditions: A systematic review |
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Authors: | Emma J Walker Noni E MacDonald Nehal Islam Nicole Le Saux Karina A Top Deshayne B Fell |
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Institution: | 1. Queen’s University, Kingston, ON, Canada;2. Dalhousie University, Halifax, NS, Canada;3. Canadian Centre for Vaccinology, Halifax, NS, Canada;4. University of Ottawa, Ottawa, ON, Canada;5. Division of Infectious Diseases, University of Ottawa, Ottawa, ON, Canada;6. Children’s Hospital of Eastern Ontario Research Institute, Ottawa, ON, Canada;7. School of Epidemiology and Public Health, University of Ottawa, Ottawa, ON, Canada |
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Abstract: | ObjectiveTo systematically review literature on uptake and timeliness of diphtheria-tetanus-pertussis, measles-mumps-rubella, and/or polio-containing vaccines in infants who were born preterm, with a low birth weight, and/or with chronic health conditions that were diagnosed within the first 6?months of life.MethodsUsing a standardized search strategy developed by a medical librarian, records were extracted from MEDLINE, Embase, Database of Abstracts of Reviews of Effects, and CINAHL up to May 8, 2018.ResultsOut of the 1997 records that were screened, we identified 21 studies that met inclusion criteria. Eleven studies assessed vaccine coverage and/or timeliness in preterm infants, 6 in low birth weight infants, and 7 in children with chronic health conditions. Estimates of coverage in these populations were highly variable, ranging from 40% to 100% across the vaccines and population groups.ConclusionsThere is a lack of studies reporting coverage and timeliness of routine immunizations in special populations of children.Policy implicationsOur review suggests a need for improved surveillance of immunization status in special populations of infants, as well as a need for standardization of reporting practices. |
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Keywords: | Immunization Coverage Timeliness |
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