2022-07-05-世界卫生组织-Immunization_Comoros_the_2022_country_profile_17页_383kb

WHO and UNICEF provide country-specific estimates for immunization coverage in Comoros based on empirical data from various sources, including administrative reports, surveys, and national submissions. These estimates cover vaccines such as BCG, DTP1/DTP3, Pol3, IPV1, MCV1/MCV2, RCV1, HepB series, Hib3, RotaC, and PcV3 for years ranging from 2010 to 2021. The methodologies consider potential biases and employ grades of confidence (GoC) to indicate the support from data, rather than data quality judgments. Administrative data are often used but subject to challenges like vaccine stockouts and inconsistencies, with recommendations for high-quality household surveys to improve accuracy. Coverage levels for Comoros have generally fluctuated between 70-95%, noting variations due to factors like data calibration and gaps in survey data. Estimates should be used cautiously as they lack formal uncertainty measures and may be influenced by empirical biases.

Key vaccines and trends:

• BCG coverage around 90-94% for most years.
• DTP1 and DTP3 coverage high but declined in recent years due to stockouts.
• Pol3 and IPV1 showed volatility, with a 2021 dip attributed to administrative data issues.
• Many newer vaccines have sparse data or rely on interpolated estimates.
• The GoC system is used to denote support level (•••, ••, •), emphasizing empirical evidence over judgments.