2023-07-16-世界卫生组织-Immunization_Cabo_Verde_2023_country_profile_19页_379kb

报告摘要

The 2022 revision of WHO and UNICEF immunization coverage estimates for Cabo Verde is based on data from the national government, surveys, and administrative records. Estimates are country-specific, drawing on various data sources without borrowing from other countries.
A Grade of Confidence (GoC) is assigned to each estimate, indicating the level of empirical support: ••• (well-supported), •• (moderately supported), or • (low support), with risk of error noted.
Data quality varies, and estimates are produced with caution due to potential biases in reported data, denominators, and numerators.

Notably, data for 2022 was extrapolated from previous years due to lack of reliable sources or recent surveys, such as household household surveys within the last five years.
Common challenges include reported data exclusions due to percentages exceeding 100%, sudden changes, denominator declines (e.g., 20% drop between years), and reliance on national data that may be biased or incomplete.
Specific vaccine estimates (e.g., BCG, DTP1, DTP3, Pol3, IPV1) were challenged with issues like D- or R-, often leading to estimation based on prior work or calibration to earlier data.

Estimates rely on a mix of administrative data, survey-based information (e.g., Demographic and Reproductive Health Surveys, IDSR data), and independent recalculations using UN population data.
Trends show coverage around 90-100% for many vaccines in earlier years (e.g., 2011-2016), but recent years (2020-2022) indicate data quality compromises, with recommendations for surveys to confirm levels.
Calibrations to earlier years (e.g., 2016) occurred in some cases due to data inconsistencies, reflecting uncertainty.

WHO and UNICEF strongly recommend conducting high-quality household surveys and reviewing time-series data to improve accuracy and reduce risks from data errors.
Estimates are subject to change and should be used with caution, considering potential misrepresentation of coverage, as the confidence level does not equate to a judgment on data quality.

While historical coverage shows stability for some vaccines, the 2022 revision highlights significant data quality issues, emphasizing the need for robust data collection to support reliable immunization tracking and program improvement.

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