2023-07-16-世界卫生组织-Immunization_Georgia_2023_country_profile_17页_361kb

Immunization Coverage Estimates for Georgia, 2022 Revision by WHO and UNICEF

Overview

• This document provides WHO and UNICEF's estimates of Georgia's national immunization coverage based on data up to June 26, 2023. The estimates cover vaccines like BCG, DTP1, DTP3, Pol3, IPV1, MCV1, MCV2, RCV1, HepBB, HepB3, Hib3, RotaC, and PcV3, for the years 2011 to 2022. The next revision is scheduled for July 15, 2024.

Methodology

• Estimates are primarily derived from national administrative data and population-based surveys, with adjustments for denominator calculations.
• The Grade of Confidence (GoC) system assesses data reliability without using statistical uncertainty measures. It includes three levels: ••• (well-supported), • (supported), or • (challenged/no support).
• In 2018, no high-quality immunization-specific survey was available; recommendations include high-quality surveys for better accuracy.
• All estimates should be used cautiously due to potential biases in data sources.

Key Findings by Vaccine

• BCG and HepBB: Coverage remained consistently high (around 96%), with minor fluctuations, particularly in HepBB due to stockout issues in 2013.
• DTP1/DTP3 and Pol3: DTP1 and DTP3 coverage declined in 2014 (e.g., DTP1 dip to 101%, then recovered to ~95-98%), while Pol3 coverage was generally high but dropped in 2014 before stabilizing.
• IPV1: Estimated from 2015 onwards; IP was introduced in 2015, with coverage around 90-100% in later years.
• MCV1/MCV2: Measles vaccination coverage was high, generally above 77-99%, with slight declines in some years like 2022.
• RCV1: Based on MCV1 estimates; coverage was high, around 90-100%.
• HepB3/Hib3 and RotaC/PcV3: Coverage for hepatitis B and Hib combination vaccines was stable but lower than some others (e.g., HepB3 around 85-96%), with RotaC/PcV3 introduced in 2013-2015 and coverage increasing slowly.

Data Limitations and Recommendations

• No recent high-quality surveys were available for immunization, suggesting many estimates lacked strong empirical support.
• Common data challenges include inaccuracies in administrative reporting and program interruptions.
• WHO and UNICEF advise national authorities to improve vaccination data collection and incorporate household surveys to enhance estimate reliability.

Conclusion

Georgia has maintained high overall immunization coverage, but declines in some years highlight ongoing risks. Continued investment in surveillance and survey-based monitoring is recommended to maintain and improve coverage levels. In all cases, estimates should be interpreted with caution based on context and objective needs.