2022-07-05-世界卫生组织-Immunization_Paraguay_2022_country_profile_19页_405kb

WHO and UNICEF provide country-specific estimates of immunization coverage for Paraguay from 2010 to 2021 based on reported data, surveys, and complementary sources. Over 30 vaccines are covered, including BCG, DTP, Polio, Measles, Hepatitis B, and others.

For the 2021 revision, estimates relied heavily on calibration to earlier years (e.g., 2015 levels) due to the absence of recent national surveys, highlighting a consistent lack of high-quality household data. Common challenges included one-month or multi-month vaccine stock-outs, transitions to electronic registries potentially missing facility-level reports, and calibration processes. HPVs like DTP and Polio showed declines from 2019 to 2021, with limited explanation, while some newer vaccines were introduced with unknown full coverage. Data sources often combined administrative reports and surveys, indicating variability in quality.

Grade of Confidence (GoC) ratings reflect empirical support, but many estimates face statistical risks or data gaps. Specific challenges included data recalculations based on surveys, exceptions due to epidemics or stock-outs, lack of direct supporting data, and dependency on national reports, which may not adequately represent true coverage due to potential biases.

Overall, immunization coverage fluctuated, with notably low levels in some years (e.g., HepBB at 58% in 2017). Emphasis is placed on recommending high-quality surveys to improve accuracy, as current estimates should be used with caution due to underlying data quality and potential inaccuracies. Recommendations include strengthening health system monitoring to capture precise immunization metrics.