New Delhi, Dec. 8 -- India is witnessing a significant surge in influenza cases, driven by the H3N2 subtype, clinically known to cause more severe infections and higher hospitalizations, according to the latest surveillance data from the country's premier medical research organization, the Indian Council of Medical Research (ICMR).

Taking cognisance of the situation, Union health minister J.P. Nadda has directed a comprehensive review of preparedness in all district hospitals and medical colleges within the next fortnight.

Meanwhile, doctors in northern Indian states, particularly in the national capital region, describe the situation as a public health "havoc", noting that severe air pollution is exacerbating the impact of the viral su...