2025-01-16-世界卫生组织-COVID-19_epidemiological_update_–_17_January_2025_33页_2mb

报告摘要

COVID-19 Epidemiological Update Summary
17 December 2024

This summary outlines the key findings from the WHO COVID-19 Epidemiological Update, edition 175, published on 17 January 2025, covering the period 11 November to 8 December 2024. Focus includes test positivity, variants, morbidity, hospitalizations, and regional data.

Overview

During the reporting period, SARS-CoV-2 test positivity through surveillance remained relatively stable at around 8.6%, below elevated levels. Global COVID-19 cases decreased by 6% (from approximately 194,000 to 193,000) and deaths decreased by 24% (from 2,641 to over 2,000) during the last 28 days. However, reporting is inconsistent due to reduced testing and delays, and wastewater surveillance suggests higher actual circulation than reported cases.

Key Highlights

Weekly SARS-CoV-2 PCR positivity ranged from 9.5% to 8.6%, with an average of over 56,300 specimens tested across 103 countries.
Wastewater estimates indicate SARS-CoV-2 circulation is 2-19 times higher than reported cases.
Cases and deaths show declines, but with unreliable data; hospitalizations and ICU admissions decreased by 1% and 3%, respectively.
SARS-CoV-2 variants: XEC is the most prevalent (38.6%), followed by JN.1 (16.2%). Variant tracking shows stability except for JN.1.18's slight increase.
Post-COVID-19 condition affects about 6% of infections and is linked to mild cases despite vaccination's protective role.
Vaccination uptake remains low, with global coverage at 39.2 million doses in 90 countries, impacting high-risk groups.

Variants

JN.1 (VOI) accounts for 16.2% of sequences, increasing slightly.
XEC dominates at 38.6%.
VUM KP.3.1.1 declined, while others like KP.3 and JN.1.18 showed mixed trends.

Regional Overview

African Region: Test positivity rose from 5.3% to 8.3%; cases increased by 16%, deaths remained flat.
Region of the Americas: Test positivity dropped from 10.5% to 9.4%; cases decreased by 14%, deaths by 24%.
European Region: Test positivity from 4.5% to 4.0%; cases and deaths down by 7% and 25%.
South-East Asia and Western Pacific: Cases and deaths fluctuated; South-East Asia saw a death increase, Western Pacific had a case surge.
Data collection limitations noted across all regions.