Weekly Report

Week 15 2023

Article source: Date time:2023-04-21 
Download:China flu report 2315.pdf

Summary

 

Influenza detections were decreasing in southern and northern provinces this week. A(H1N1)pdm09 was dominant, followed by A(H3N2). There were 92 ILI outbreaks reported in week 15.

 

 

 

Among influenza viruses antigenically characterized by CNIC since October 3, 2022, 746(98.4%) influenza A(H1N1)pdm09 viruses were characterized as A/Victoria/2570/2019-like; 359(63.0%) influenza A(H3N2) viruses were characterized as A/Darwin/9/2021(egg)-like, 450(79.0%) influenza A(H3N2) viruses were characterized as A/Darwin/6/2021(cell)-like, 11(84.6%) 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 3, 2022, all influenza A(H1N1)pdm09, A(H3N2) and B viruses were sensitive to neuraminidase inhibitors and endonuclease inhibitors.