Weekly Report

Week 9 2025

Article source: Date time:2025-03-06 
Download:China flu report 2509.pdf

Summary

 

Influenza detections declined in the southern provinces and northern provinces. A(H1N1)pdm09 was predominated. There were 42 ILI outbreaks reported in this week.





Among influenza viruses antigenically characterized by CNIC since April 1, 2024, 3258(97.8%) influenza A(H1N1)pdm09 viruses were characterized as A/Victoria/4897/2022-like; 426(56.0%) influenza A(H3N2) viruses were characterized as A/Thailand/8/2022(egg)-like, 498(65.4%) influenza A(H3N2) viruses were characterized as A/Thailand/8/2022(cell)-like; 1026(98.9%) influenza B/Victoria viruses were characterized as B/Austria/1359417/2021-like.




 

Among the influenza viruses tested by CNIC for antiviral resistance analysis since April 1, 2024, all but 79 influenza A(H1N1)pdm09 were sensitive to neuraminidase inhibitors, all A(H3N2) and B viruses were sensitive to neuraminidase inhibitors; all A(H1N1)pdm09, A(H3N2) and B viruses were sensitive to endonuclease inhibitors.