2025-04-16-世界卫生组织-Influenza_Update_N°_522_1页_1mb

Global Respiratory Virus Activity Summary

Influenza

• Northern Hemisphere: Activity declined or remained stable in most countries, with minor increases reported in Central America, the Caribbean, Western Asia, and Northern/Southwest Europe. Influenza positivity remained elevated (>10%) in parts of North America, Tropical South America, Central America, Caribbean (predominantly A(H1N1)pdm09), Northern and Eastern Africa (all subtypes), Southwest, Northern and Eastern Europe (predominantly A(H3N2) and B viruses), Western and Southern Europe (predominantly A(H3N2)), Southeast Asia (predominantly A(H1N1)pdm09 and B), and Eastern Asia (predominantly A(H1N1)pdm09).
• Southern Hemisphere: Activity was stable or decreased in all countries except one in Oceania. Influenza positivity remained elevated in a few countries of Eastern Africa and one country in Oceania (predominantly A(H1N1)pdm09).

SARS-CoV-2

• Globally, activity was low across reporting countries except for single countries in Western Africa and Eastern Asia. Activity decreased or remained stable in all reporting countries except for few countries in Central America and the Caribbean.