New Delhi, Sept. 15 -- The Indian Council of Medical Research (ICMR) has reported a significant rise in influenza infections, driven by the H3N2, RSV, and Victoria strains.

ICMR data shows a clear and concerning trend in H3N2 cases throughout 2025. Cases began to climb in July (week 28), with an estimated 10-15 infections. By the end of July (week 31), the number had more than doubled to 20-30, and continued to rise through August (week 34), reaching 40-50 cases.

The peak was recorded in September (week 37), with 71 reported cases.

The overall positivity rate for the strain, based on samples collected from hospitals and the community, also showed a steady increase from late July to August. Of roughly 1,400 samples tested each week, pos...