Weekly Report
Week 21 2025
Article source: Date time:2025-05-29
Download:China flu report 2521.pdf
·Influenza activity in the southern provinces and northern provinces was low. There were 8 ILI outbreaks reported in this week.
·Among influenza viruses antigenically characterized by CNIC since October 1, 2024, 3604(98.6%) influenza A(H1N1)pdm09 viruses were characterized as A/Victoria/4897/2022-like; 90(61.2%) influenza A(H3N2) viruses were characterized as A/Croatia/10136RV/2023(egg)-like, 145(98.6%) influenza A(H3N2)viruses were characterized as A/District of Columbia/27/2023(cell)-like; 141(97.2%) 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 106 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.