2024-11-12-世界卫生组织-Influenza_Update_N°_501_1页_1mb

Flu Activity

• Northern Hemisphere: Temperate countries: interepidemic levels. Elevated activity was noted in:

  • Western Africa (B viruses).
  • Middle Africa (A(H3N2)).
  • Western Asia (A(H1N1)pdm09).
  • Southern Asia (A(H1N1)pdm09 and B viruses).
  • South East Asia (A viruses).
  • Central America (A(H3N2)).
    Activity increased in one Western Asian country but remained similar or declined elsewhere.

• Southern Hemisphere: Elevated activity in:

  • One country in South America (mostly B viruses).
  • Eastern Africa (A(H1N1)pdm09 and B viruses).
  • Melanesia and Polynesia (mostly A(H3N2)).
    Activity was similar or declined in most countries but increased in single countries in Tropical South America and Melanesia.

SARS-CoV-2 Activity

• SARS-CoV-2 activity remained elevated in many countries in:
  • Europe.
  • North America.
  • A few countries in Eastern Africa and South East Asia.
• Increased activity reported from:
  • One country in Europe.
  • Middle and Eastern Africa.
  • Eastern Asia.
  • South East Asia.
• Declined or remained similar in all other reporting countries.

Additional Information

• Data provided through WHO's GISRS.
• Surveys by various methods and CATs limit direct comparison.
• Positivity data smoothed over 3 weeks (only for ≥10 specimens tested weekly).
• Summarized by geographical groupings for data aggregation.

Report Generation

• Summary generated by WHO Global Influenza Programme based on RespiMart data.
• Last update check: 11 November 2024, 11:42:57 UTC.
• Latest regional reports available online (African, Americas, Eastern Mediterranean, European, South-East Asia, Western Pacific).