2023-04-26-世界卫生组织-Weekly_epidemiological_update_on_COVID-19_-_27_April_2023_13页_899kb

COVID-19 Weekly Epidemiological Update Summary

Global Overview

Globally, COVID-19 cases and deaths decreased by 23% and 36%, respectively, in the last 28 days (27 March to 23 April 2023) compared to the previous 28 days. Reporting underestimates true cases due to reduced testing and delays. However, increases were observed in the South-East Asia and Eastern Mediterranean regions, with countries like India and the Islamic Republic of Iran reporting significant rises. Cumulative cases surpassed 764 million, and deaths exceeded 6.9 million globally.

SARS-CoV-2 Variants

WHO monitors variants of interest (e.g., XBB.1.5 and XBB.1.16) and under monitoring (e.g., BA.2.75, BQ.1, XBB series). XBB.1.5 dominated sequences but declined from previous weeks, while others like XBB.1.9.2 showed increasing trends. Global spread is tracked via GISAID, with adjustments for reporting variability.

WHO Regional Overviews

• African Region: Cases and deaths decreased by 68% and 42%, with notable increases in some countries.
• Region of the Americas: Cases and deaths dropped by 35% and 33%, led by declines in the US and Brazil.
• Eastern Mediterranean Region: Cases surged by 41%, deaths rose 80%, with high increases in Iran and Saudi Arabia.
• European Region: Cases and deaths fell by 34% and 38%, with major declines in Russia and France.
• South-East Asia Region: Cases jumped 666%, deaths increased 305%, driven by India and Indonesia.
• Western Pacific Region: Cases and deaths decreased by 15% and 7% in some subregions, but higher increases in countries like South Korea.

COVID-19 Hospitalizations

New hospitalizations decreased 9% in the last 28 days, with incomplete data due to reporting delays. Higher hospitalization rates were reported in countries like France and Qatar, but consistent reporting is lower globally.

Additional Notes

Data are based on laboratory-confirmed cases and subject to verification; trends should be interpreted with caution due to regional reporting differences.