2023-11-12-世界卫生组织-Influenza_Update_N°_458_11页_1mb

Influenza Update Summarization:

As of 13 November 2023, based on data up to 29 October 2023, this report details the global influenza activity. Countries are advised to monitor and report integrated influenza and SARS-CoV-2 surveillance through FluNet and/or regional platforms, with clinicians urged to consider influenza in differential diagnosis and follow national guidelines for testing/treatment.

Key activities observed:

• Globally: Influenza activity remained low, with detections primarily in tropical regions and increased temperate northern hemisphere activity in parts of Asia.
• North America: Low activity, typical seasonal levels reported.
• Europe & Central Asia: Below baseline or low activity, with two countries showing medium activity; influenza A predominant where detected.
• Africa: Northern Africa had no recent detections; Southern & Eastern Africa reported low activity overall, with A(H3N2) predominant.
• Asia-Pacific (Specific Regions):
  • East Asia: Activity increased due to southern China/korea; A(H3N2) and A(H1N1)pdm09 varied by country.
  • South-East Asia: Elevated activity; increases in Laos and Thailand, decline in others.
  • South America: Low activity overall.
  • Oceania: Low activity.

SARS-CoV-2 & RSV Activities: Globally, SARS-CoV-2 positivity decreased significantly from sentinel surveillance. Early RSV activity signs were noted in North America, with RSV trends increasing in some European/Caribbean countries.

Virology: FluNet data indicates influenza A predominant globally (12,366 positive tests, mostly A(H3N2)). SARS-CoV-2 positivity from sentinel surveillance was 6% globally.