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Low vaccination coverage of pneumococcal conjugate vaccines (PCVs) in Shanghai, China: A database analysis based on birth cohorts from 2012 to 2020. | LitMetric

AI Article Synopsis

Article Abstract

Background: Pneumococcal vaccines have been developed to protect infants and young children from pneumococcal diseases. Vaccination coverage studies are important in determining a population's vaccination status and strategically adjusting national immunization programs (NIP). In this paper, we aim to describe the coverage of pneumococcal conjugate vaccines (PCVs) immunization for birth cohorts from 2012 to 2020 and discussed the factors influencing the coverage.

Methods: Vaccination data were collected via the vaccination information database in Shanghai, China, for children born from 2012 to 2020. The population data used in this study were collected from each community from 2012 to 2020. The coverage of initial immunization (1 dose), basic immunization (three doses) and full immunization (3 + 1 doses) for PCVs was calculated according to the number of doses received. As vaccination coverage was assessed each year, Annual Growth Rate (AGR) was used to describe the variation trend of vaccination coverage. Immunization time and completeness of different PCVs were also analyzed.

Results: The total number of births from 2012 to 2020 was 38,268 in Huangpu District, Shanghai, China. The initial immunization coverage of PCVs increased from 12.26% in 2012 to 49.65% in 2020, and the highest coverage was 50.61% in 2019. The cumulative vaccination coverage of PCVs was 19.4% for initial immunization and 16.8% for basic immunization from 2012 to 2020. And cumulative full immunization coverage of PCVs was 12.3% from 2012 to 2019. The PCVs coverage of most vaccination statuses showed an obvious upward trend from 2017 to 2020.

Conclusions: Despite an upward trend in vaccination coverage of PCVs, the vaccination coverage of initial, basic and full immunization among children is still low. And given the heavy burden of Streptococcus pneumoniae (Sp) among children in China and the fact that the current vaccination coverage cannot effectively protect children, it is recommended that the government include PCVs into the NIP as soon as possible.

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http://dx.doi.org/10.1016/j.vaccine.2021.09.011DOI Listing

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