2022-11-01-世界卫生组织-Weekly_epidemiological_update_on_COVID-19_-_2_November_2022_10页_744kb

Summary of WHO COVID-19 Weekly Epidemiological Update, Edition 116 (2 November 2022)

Global Overview

• New Cases: As of 30 October 2022, the global number of new weekly cases decreased by 17% compared to the previous week, with 2.3 million new cases reported.
• New Deaths: The global number of new weekly deaths decreased by 5%, with over 9,300 fatalities reported.
• Cumulative Cases and Deaths: Over 627 million confirmed cases and over 6.5 million deaths have been reported globally as of 30 October 2022.
• Testing Limitations: The true number of incident cases is likely underestimated due to declining global testing rates.
• Regional Trends:
  • Decreased Cases: Four regions (Africa, Europe, Eastern Mediterranean, and South-East Asia) reported a decrease or stable case numbers.
  • Increased Cases: The Americas and Western Pacific regions saw a 5% increase in new cases.
  • Decreased Deaths: Europe and Eastern Mediterranean regions reported a decrease in deaths.
  • Increased Deaths: Africa, Americas, South-East Asia, and Western Pacific regions saw an increase in deaths.

Country-Level Data

• Top Countries by New Cases:
  • Germany: 346,672 new cases (-36%)
  • Japan: 281,974 new cases (+21%)
  • USA: 259,066 new cases (+1%)
  • China: 257,994 new cases (-10%)
  • Republic of Korea: 241,465 new cases (+37%)
• Top Countries by New Deaths:
  • USA: 3,187 new deaths (+24%)
  • Brazil: 553 new deaths (+44%)
  • Russian Federation: 567 new deaths (-11%)
  • Italy: 559 new deaths (-5%)
  • China: 489 new deaths (+4%)

Special Focus: SARS-CoV-2 Variants

• Global Sequence Data:
  • Omicron Variant: Dominated global sequence data, accounting for 99.9% of sequences reported in the past 30 days.
  • BA.5 and Descendants: Continued to be the most prevalent Omicron lineage, accounting for 74.9% of sequences in epidemiological week 41.
  • BA.2.75, BQ.1, XBB, BA.2.3.20: These subvariants showed increased prevalence during the reporting period.
• Variant Classification:
  • XBB and BQ.1: Remain classified as Variants of Concern (VOCs) under the Omicron lineage.
  • No New Designations: Based on current evidence, no new labels are warranted for these subvariants.
  • Severity: No evidence of increased severity for XBB and BQ.1.
• Monitoring: WHO continues to monitor these lineages and encourages countries to report sequences and conduct comparative analyses.

WHO Regional Overviews

African Region

• New Cases: 3,864 new cases (-39%), with Madagascar, Mali, and Mozambique showing significant increases.
• New Deaths: 56 new deaths (+155%), with South Africa reporting the highest number (54 deaths).

Region of the Americas

• New Cases: 388,350 new cases (+5%), with Guatemala, Panama, and Peru showing the highest increases.
• New Deaths: 4,354 new deaths (+23%), with USA and Brazil reporting the highest numbers.

Eastern Mediterranean Region

• New Cases: 13,359 new cases (-8%), with Somalia and Sudan showing significant increases.
• New Deaths: 64 new deaths (-15%), with Iran and Sudan reporting the highest numbers.

European Region

• New Cases: 1,066,067 new cases (-34%), with Germany, Italy, and France reporting the highest numbers.
• New Deaths: 3,277 new deaths (-31%), with Russia, Italy, and France reporting the highest numbers.

South-East Asia Region

• New Cases: 34,026 new cases (-3%), with Indonesia showing a +40% increase.
• New Deaths: 278 new deaths (+13%), with Indonesia reporting the highest number (168 deaths).

Western Pacific Region

• New Cases: 871,483 new cases (+5%), with Japan and Republic of Korea reporting the highest numbers.
• New Deaths: 1,319 new deaths (+7%), with China and Philippines reporting the highest numbers.

Additional Notes

• Data Interpretation: Trends should be interpreted with caution due to changing testing strategies and data reporting practices.
• Surveillance Limitations: Differences in sequencing capacity, sampling strategies, and data lag times affect the accuracy and reliability of the data.
• Resources: Additional resources for tracking variants, genomic sequencing, and policy briefs are available on the WHO website.
• Data Requests: Historic data adjustments can be requested by emailing epi-data-support@who.int.

Key Information

• Omicron Dominance: Omicron remains the dominant variant globally, with BA.5 and its descendants the most prevalent.
• Variant Monitoring: WHO continues to monitor XBB and BQ.1 as VOCs and is working to improve variant risk assessment.
• Regional Variability: Case and death numbers vary significantly across regions, with some showing increases and others decreases.
• Public Health Response: The WHO recommends vigilance and continued reporting of sequences to better understand variant behavior.