2022-05-31-世界卫生组织-Weekly_epidemiological_update_on_COVID-19_-_1_June_2022_9页_1mb

Summary of the WHO COVID-19 Weekly Epidemiological Update (Edition 94, 1 June 2022)

Core Content

This edition of the WHO weekly epidemiological update provides an overview of global and regional trends in new confirmed cases and deaths of COVID-19 as of 29 May 2022. It also includes a special focus on SARS-CoV-2 variants of interest and concern, and regional summaries for the African, Americas, Eastern Mediterranean, European, South-East Asia, and Western Pacific WHO regions.

Global Trends

• New Cases:
  • The global number of new weekly cases decreased by 11% compared to the previous week, with 3.38 million cases reported.
  • Total confirmed cases globally reached over 526 million.
• New Deaths:
  • The global number of new weekly deaths decreased by 3%, with 9,647 deaths reported.
  • Total confirmed deaths globally reached over 6.29 million.
• Regional Variations:
  • New cases increased in the American Region (+9%) and Eastern Mediterranean Region (+1%).
  • New cases decreased in the Western Pacific (-10%), European (-30%), South-East Asia (-8%), and Africa (-36%) regions.
  • New deaths increased in the Western Pacific (+18%), African (+15%), and Americas (+13%) regions.
  • New deaths decreased in the European (-22%), South-East Asia (-15%), and Eastern Mediterranean (-45%) regions.

Country-Level Highlights

New Weekly Cases

• United States: 736,298 new cases (+3%)
• China: 576,367 new cases (+6%)
• Australia: 294,128 new cases (-18%)
• Japan: 203,365 new cases (-18%)
• Germany: 183,844 new cases (-38%)

New Weekly Deaths

• United States: 2,461 new deaths (+25%)
• Brazil: 826 new deaths (+16%)
• Italy: 624 new deaths (-15%)
• Russian Federation: 605 new deaths (-11%)
• China: 578 new deaths (+82%)

Special Focus: SARS-CoV-2 Variants

• WHO continuously monitors SARS-CoV-2 variants for their impact on transmission, disease severity, and vaccine/therapeutic effectiveness.
• Omicron remains the dominant variant globally, accounting for nearly all reported sequences.
• BA.2 is the most prevalent Omicron sublineage, with a slight decline from 78% to 75% of Omicron sequences.
• BA.1 has also declined in prevalence.
• Three Omicron sublineages—BA.2.12.1, BA.4, and BA.5—showed an increase in prevalence.
• BA.3 prevalence declined to <1%.

Note: Trends should be interpreted with caution due to differences in sequencing capacity, sampling strategies, and changes in testing approaches across countries.

Regional Overviews

African Region

• New weekly cases decreased by 36%, with 34,000 new cases.
• South Africa and Réunion reported the highest numbers of new cases.
• New weekly deaths increased by 15%, with 200+ deaths.
• South Africa and Réunion had the highest numbers of new deaths.

Region of the Americas

• New weekly cases increased by 9%, with 1.1 million new cases.
• United States, Brazil, and Argentina reported the highest numbers of new cases.
• New weekly deaths increased by 13%, with 4,200+ deaths.
• United States, Brazil, and Canada had the highest numbers of new deaths.

Eastern Mediterranean Region

• New weekly cases increased by 1%, with 17,000 new cases.
• Kuwait, Sudan, and Morocco reported the largest proportional increases.
• New weekly deaths decreased by 45%, with 96 deaths reported.
• Iran, Saudi Arabia, and Egypt had the highest numbers of new deaths.

European Region

• New weekly cases decreased by 30%, with 842,000 new cases.
• Germany, Portugal, and Italy reported the highest numbers of new cases.
• New weekly deaths decreased by 22%, with 3,100+ deaths reported.
• Italy, Russian Federation, and United Kingdom had the highest numbers of new deaths.

South-East Asia Region

• New weekly cases and deaths continued to decline, with 50,000 new cases and 400 new deaths.
• Thailand and India reported the highest numbers of new cases.
• Thailand, India, and Indonesia had the highest numbers of new deaths.

Western Pacific Region

• New weekly cases decreased by 10%, with 1.3 million new cases.
• China, Australia, and Japan reported the highest numbers of new cases.
• New weekly deaths increased by 18%, with 1,500+ deaths reported.
• China, Australia, and Japan had the highest numbers of new deaths.

Key Information and Notes

• Data Limitations: Trends should be interpreted with caution due to variations in testing strategies, reporting practices, and surveillance systems.
• Variant Monitoring: WHO updates variant classifications based on their public health impact.
• Additional Resources:
  • WHO provides technical guidance, dashboards, and situational updates.
  • Resources for tracking variants, genomic sequencing, and vaccine data are available.
  • Public health measures and travel advice are also provided for the general population.

Annex 1: Data Notes

• Data is based on laboratory-confirmed cases and deaths reported to WHO.
• Underreporting and delays are common, especially in low-resource settings.
• Batch reporting may affect data accuracy and interpretation.
• WHO does not endorse specific products or manufacturers.
• Kosovo is referenced in the context of UN Security Council Resolution 1244 (1999).

Conclusion

The global trend of new cases and deaths continues to decline, although regional variations persist. The Omicron variant, particularly BA.2, remains dominant, with emerging sublineages showing increased prevalence. Variations in testing and reporting practices across countries require careful interpretation of data. WHO encourages continued monitoring and reporting of variants and provides a range of resources to support public health responses.