●Influenza detections were increasing in the southern provinces and were decreasing in the northern provinces this week, A(H1N1)pdm09 was predominated, followed by A(H3N2) and B/Victoria. There were 9 ILI outbreaks reported in week 22.

●Among influenza viruses antigenically characterized by CNIC since April 1, 2024, 224(95.7%) influenza A(H1N1)pdm09 viruses were characterized as A/Victoria/4897/2022-like; 229(50.8%) influenza A(H3N2) viruses were characterized as A/Thailand/8/2022(egg)-like, 254(56.3%) influenza A(H3N2) viruses were characterized as A/Thailand/8/2022(cell)-like; 583(98.3%) 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 A(H1N1)pdm09, A(H3N2) and B viruses were sensitive to neuraminidase inhibitors and endonuclease inhibitors.