2022-07-05-世界卫生组织-Immunization_China_2022_country_profile_16页_350kb

WHO and UNICEF's 2021 revision estimates for immunization coverage in China, based on data received by July 7, 2022, show consistently high coverage for most vaccines, with levels typically exceeding 99% from 2010 to 2021. Estimates are country-specific and rely on administrative data, calibrated or recalculated using national reported data, and are not borrowed from other countries. The Grade of Confidence (GoC) system indicates the strength of empirical support; ••• denotes high confidence, •• moderate, and • low.

Key trends include a decline in reported births and vaccine doses due to decreases (19% in 2019-2020, 14% in 2020-2021), mirroring population changes. However, coverage estimates, such as for BCG, DTP3, Pol3, and others, remain high despite these declines. WHO and UNICEF recommend high-quality national surveys for better data accuracy, as no recent household surveys were available.

Vaccines covered include BCG, DTP1/DTP3, Pol3, IPV1, MCV1, MCV2, RCV1, HepBB, HepB3, Hib3, RotaC, and PcV3. Estimates were generally stable post-2014 but face limitations due to data biases and no empirical adjustments for recent years. All figures should be used with caution due to potential inaccuracies in administrative data.

This report highlights China's strong immunization performance but underscores the need for improved data collection to address population shifts and ensure reliable coverage assessments.