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    Assessing Vaccine Coverage and Timeliness in Bamako, Mali after the Introduction of Rotavirus Vaccine: A Modified Immunization Cluster Survey.

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    Author
    Roose, Anna
    Onwuchekwa, Uma
    Tapia, Milagritos
    Sow, Samba
    Mast, T Christopher
    Kotloff, Karen
    Date
    2021-10-04
    Journal
    American Journal of Tropical Medicine and Hygiene
    Publisher
    American Society of Tropical Medicine and Hygiene
    Type
    Article
    
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    See at
    https://doi.org/10.4269/ajtmh.21-0148
    Abstract
    Vaccine coverage and timeliness are critical metrics for evaluating the performance of immunization programs. Following the introduction of rotavirus vaccine in Bamako, Mali, we conducted two cluster surveys spaced approximately 1 year apart to evaluate these metrics among children 9 to 20 months of age. Using the child’s immunization card or the medical record at the center of administration, each selected child’s immunization status was determined at 9 and 12 months of age. Deviations from the WHO-recommended immunization schedule were described by the median delay and fraction of children receiving doses outside of recommended age ranges. Overall, 1,002 children were enrolled in the two surveys combined; 80.1% of children born 7 to 12 months after introduction (survey 1) received three doses of pentavalent rotavirus vaccine (ROTA3) by 9 months of age, which increased to 86.1% among children born 17 to 26 months after introduction (survey 2). Concomitantly, coverage with the third dose of diphtheria-pertussis-tetanus-containing vaccine (DPT3) by age 9 months was 86.5% (survey 1) and 88.9% (survey 2); by age 12 months, 61.3% and 72.4% of children, respectively, had received all scheduled immunizations. The median delay in ROTA3 and DPT3 administration were similar at about 3.4 weeks. Within 3 years of introduction, coverage of rotavirus vaccine among Bamako infants achieved coverage similar to DPT3 and is approaching the Global Vaccine Action Plan goal of 90% coverage by 2020. However, timeliness of coverage remains a concern. Copyright © 2021 by The American Society of Tropical Medicine and Hygiene
    Identifier to cite or link to this item
    http://hdl.handle.net/10713/17571
    ae974a485f413a2113503eed53cd6c53
    10.4269/ajtmh.21-0148
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