2024-09-03-世界卫生组织-Influenza_Update_N°_491_1页_1mb

Global Respiratory Virus Weekly Update Summary

Influenza

• Northern Hemisphere: Influenza activity is at interepidemic levels in temperate countries. Elevated in Western Africa (due to A(H3N2) and B viruses), Middle Africa (A(H3N2) viruses), Southern Asia (A(H1N1)pdm09 viruses), and South East Asia (A(H1N1)pdm09 viruses); activity is increasing in some Middle African and Southern Asian countries.
• Southern Hemisphere: Activity remains elevated in South America (A(H3N2) and B viruses), Eastern Africa (A(H3N2) viruses), Southern Africa (B viruses), and Oceania (A(H3N2) viruses); it increases in some Tropical South American and Eastern African areas but declines or stays similar elsewhere.

SARS-CoV-2

• Activity is elevated in many Northern hemisphere countries; it increases in a few reporting countries and is similar or declining in others elsewhere.

Additional Information

The report includes data from sentinel surveillance on influenza and SARS-CoV-2, not other surveillance approaches. Regional reports and data sources are available through specified WHO platforms.