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  • Title: Completeness and timeliness of diphtheria-tetanus-pertussis, measles-mumps-rubella, and polio vaccines in young children with chronic health conditions: A systematic review.
    Author: Walker EJ, MacDonald NE, Islam N, Le Saux N, Top KA, Fell DB.
    Journal: Vaccine; 2019 Mar 22; 37(13):1725-1735. PubMed ID: 30814030.
    Abstract:
    OBJECTIVE: To systematically review literature on uptake and timeliness of diphtheria-tetanus-pertussis, measles-mumps-rubella, and/or polio-containing vaccines ininfants 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. METHODS: Using 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. RESULTS: Out 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. CONCLUSIONS: There is a lack of studies reporting coverage and timeliness of routine immunizations in special populations of children. POLICY IMPLICATIONS: Our review suggests a need for improved surveillance of immunization status in special populations of infants, as wellas aneed for standardization of reporting practices.
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