·Influenza activity in the southern and northern provinces increased. There were 621 ILI outbreaks reported in this week.

·Among influenza viruses antigenically characterized by CNIC since March 31, 2025, 1054(98.0%) influenza A(H1N1)pdm09 viruses were characterized as A/Victoria/4897/2022-like; 261(58.3%) influenza A(H3N2) viruses were characterized as A/Croatia/10136RV/2023(egg)-like, 420(93.8%) influenza A(H3N2)viruses were characterized as A/District of Columbia/27/2023(cell)-like; 256(97.7%) influenza B/Victoria viruses were characterized as B/Austria/1359417/2021-like.

·Among the influenza viruses tested by CNIC for antiviral resistance analysis since March 31, 2025, all but 30 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.