2022-07-05-世界卫生组织-Immunization_Georgia_2022_country_profile_16页_362kb

Summary of WHO and UNICEF Immunization Coverage Estimates for Georgia - 2021 Revision

Background

• WHO and UNICEF jointly estimate national immunization coverage for Georgia based on data from national sources, surveys, and external databases. The 2021 revision uses data received as of July 7, 2022, with estimates valid until July 15, 2023. These estimates are country-specific and rely on reported national data where available, without borrowing from other countries.

Methodology and Data Quality

• Estimates are primarily based on administrative data reported by the national government, supplemented by district-level surveys or survey-based data in some years.
• The Grade of Confidence (GoC) assesses the empirical support for estimates; higher GoC levels (e.g., R+ D+) indicate strong support from reported data, recalculation with an independent denominator, and supporting surveys. Lower GoC levels indicate data limitations or challenges.
• Not all data sources are nationally representative; MICS surveys from 2018 did not include immunization modules, highlighting a need for high-quality surveys to corroborate estimates.
• All estimates carry risks of inaccuracies and should be used cautiously when assessing objectives, given potential biases and the absence of formal uncertainty measures.

Coverage Trends

• Immunization coverage for key vaccines has generally remained high, with estimates above 80% for many vaccines in most years:
  • BCG, DTP1, DTP3, Pol3, MCV1, MCV2, RCV1, HepB3, Hib3, RotaC, and PcV3 varied primarily between 60% and 100%, with fluctuations due to factors like national program changes, stock-outs (e.g., HepB coverage dipped in 2009), and vaccine introductions (e.g., pentavalent in 2010, rotavirus in 2013, and_IPV in 2015).
  • No recent national surveys were available for confirmation, leading to recommendations for improved data collection.
• Estimates from 2010 to 2021 show consistent reliance on government data, with some abrupt declines or increases due to program events.

Key Notes

• Immunization coverage estimates can be challenged (indicated by GoC R- or D- in some cases), reflecting potential data gaps or inconsistencies.
• For all indicators, GoC-supported estimates are based on empirical data but should not be taken as definitive without contextual assessment.
• Specific years highlight periods of intervention or risk, such as vaccine shortages in 2009 for MCV1 and stock-outs for HepB in 2013.