2023-07-16-世界卫生组织-Immunization_Argentina_2023_country_profile_17页_366kb

Argentina: WHO and UNICEF Immunization Coverage Estimates (2022 Revision)

Citation: Data received as of June 26, 2023; next revision available July 15, 2024. Based on Utc copy dated July 1, 2023.

Overview provided by WHO and UNICEF

WHO and UNICEF provide country-specific estimates for immunization coverage in Argentina, based on reported data, expert views, and global sources. Estimates are not borrowed from other countries unless data is missing. A grade of confidence (GoC) indicator is used to denote reliability. The National Administration sends numerical data and target denominator data. Declines noted from 2020 to 2021 are attributed to COVID-19 pandemic disruptions. The COVID-19 pandemic in 2020 affected service delivery, leading to preliminary data. Regular vaccines may include complications or specific schedules that vary yearly and regionally affecting measurement.

BCG vaccine (percentage of births receiving one dose)

• 2015: Calibrated to 1997 and 2016 levels; data excluded due to 101% above 100%. GoC=R-.
• 2014-2013: Similar exclusions (101% above 100%) due to data quality issues. GoC=R-.
• 2015 estimate: Governments reported 107%, calibrated to 96%. Higher values screened out.
• 2015-2014 show data issues with exceedances, leading to an exclusion of raw data and citing R-. Administrations initially reported 107%, calibrated to 96%, indicating possible inaccuracies, with D+ and S- suggesting low confidence.
• 2011-2012: Estimates available after calibration.
• 2022: Report data; challenge D- (moderate challenge).
• Trends: Frequent reporting challenges related to data exceeding 100% or incomplet data indicating unreliable figures.

DTP1 (percentage receiving first dose of diphtheria, tetanus, pertussis vaccine)

• 2022: Reports data; Annualized? Declined 15.7% infant population from 2021; EIR adoption. D-. GoC=R+ D.
• 2021: 88% (changed from 2020's 82%). Unexplained decline 15.7% from 2020-2021. D-. GoC=R+ D.
• 2020: Reports; preliminary; declined, unexplained by country but aligns with COVID disruptions. D+. GoC=R+ D.
• 2019-2018: Stable coverage around 90%. GoC=R+ D.
• Earlier estimates show fluctuations; for example, 2016 calibration led to higher values exclusion (88% reported, GoC=R+ D+). Data source: government requires adjustment (D+), assumed accurate initial.

DTP3/Pol3 (percentage receiving third dose of vaccines or Polio-containing covering age appropriately)

• DTP3 (field): Similar high coverage patterns, around 90% late 2010s; 85% 2022? Declined around 2020/2021, related to COVID.
• Pol3 (IPV or OPV third dose): Exclusively based on reported data; high estimates (like 2015:87%); cleaner trends pre-2020. GoC=R+ D for most years.

Pol3 (polio coverage)

• 2022: Reports data; EIR adoption, 15.7% infant target pop decline from 2020/21; challenge D-. GoC=R+ D (from text: GoC=R+ D+, but repetition suggests maintaining caution).
• 2015 or Earlier: Polio vaccines, impacts noted during declines. Stockouts identified for HepB, example shows shifts.

Integrated Health Metrics

See main sections for BCG, DTP1, DTP3, Pol3, etc.

Methodology and Caveats

• Grade of Confidence (GoC): Describes empirical support (R, D, S) or mix; does not imply poor data if government estimates are plausible. R+ = reliable reported data; R-, R-, S-, or D- challenge the estimate.
• Data Limitations: Reported data vary in quality. Electronic Immunization Registry implemented but coverage surveys lacking. COVID-19 events indicated as disturbance cause. Hepatitis B data disqualified due to misalignments in reports (e.g., 2022, 2020 R-). Use estimates cautiously considering the objective.
• Relies heavily on Utc-reported numbers; denominator recalculated using UN data.

Key Pressures and Observations

• Significant decline in infant target population by 15.7% from 2020-2021, used to explain reduced coverage in multiple vaccines (BCG, DTP1, Pol3, etc.). Reduced intakes, possible data misses.
• COVID-19 was notably flagged for service disruptions in 2020 impacting HepB, HepB3 Hib3 RotaC PcV3 etc. Non-specific throughout all vaccines.
• Update details and grace notes can be found online on respective WHO/UNICEF sites.

[End of summary]