2022-03-14-世界卫生组织-Weekly_epidemiological_update_on_COVID-19_-_15_March_2022_16页_2mb

报告摘要

New weekly COVID-19 cases increased by 8% during the week of March 7-13, 2022, while deaths decreased by 17% compared to the previous week.
Cumulative global cases exceeded 455 million, with over 6 million deaths reported.
Regional variations: The Western Pacific Region saw the highest increase (29% in cases), followed by Africa (12%) and Europe (2%); declines were observed in the Eastern Mediterranean (-24%), South-East Asia (-21%), and Americas (-20%).
Notable country-level changes included significant increases in cases in countries like the Republic of Korea (+44%) and Viet Nam (+65%), and decreases in deaths in China (+63%) and others.

The Omicron variant remains dominant globally, accounting for 99.9% of recently sequenced samples.
WHO redesignated Omicron and Delta as "currently circulating" variants, while Alpha, Beta, Gamma, Lambda, and Mu were classified as "previously circulating."
Continuous monitoring is recommended due to potential for future outbreaks, as reduced circulation does not eliminate health risks.

WHO released interim guidance for a risk-based approach amid Omicron transmission.
Prioritize contact tracing for high-risk individuals, such as healthcare workers or those with comorbidities.
Quarantine periods can be shortened (to 7-10 days) under specific conditions, e.g., a negative test on day seven, with recommendations to wear masks and monitor symptoms for up to 14 days.

Americas: Cases decreased by 20%, deaths by 15%; Brazil and USA reported significant increases.
Africa: Cases rose by 12%, deaths fell by 41%; South Africa had high case rates.
Eastern Mediterranean: Cases dropped 24%, deaths by 49%; decreases were widespread, with some exceptions.
Europe: Cases slightly up by 2%, deaths down by 23%; Germany and France reported higher case counts.
South-East Asia: Cases decreased by 21%, deaths by 15%; Thailand and Indonesia showed notable increases.
Western Pacific: Cases surged 29%, deaths up 12%; the Republic of Korea and Viet Nam had the highest case increases.

Highlights included training programs, community responses (e.g., women-led efforts in India), and infodemic management workshops.
Technical guidance and resources were provided for variants, contact tracing, vaccines, and supply chain coordination.
Key resources include WHO's Tracking Variants, operational dashboards, and digital tools for public health measures.

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