Weekly Report

Week 16 2025

Article source: Date time:2025-04-24 
Download:China flu report 2516.pdf

Summary

 

·Influenza activity in the southern provinces and northern provinces was low. There were 3 ILI outbreaks reported in this week.


·Among influenza viruses antigenically characterized by CNIC since October 1, 2024, 3257(98.6%) influenza A(H1N1)pdm09 viruses were characterized as A/Victoria/4897/2022-like; 65(62.5%) influenza A(H3N2) viruses were characterized as A/Thailand/8/2022(egg)-like, 61(58.7%) influenza A(H3N2) viruses were characterized as A/Thailand/8/2022(cell)-like; 67(95.7%) influenza B/Victoria viruses were characterized as B/Austria/1359417/2021-like.


·Among the influenza viruses tested by CNIC for antiviral resistance analysis since October 1, 2024, all but 87 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.