Chennai: Tamil Nadu Health Minister K G Arunraj told the state assembly on Thursday that H1N1 infections are under control in the state, while urging people not to panic. Replying to legislators' questions, he said the government will examine the need to vaccinate vulnerable groups such as the elderly and pregnant women.

Arunraj noted that states including Delhi and Karnataka are reporting a spike in H1N1 cases. H1N1 is a subtype of the influenza-A virus that causes symptoms such as fever, cough and sore throat, and can become severe enough to require hospitalisation and intensive care in vulnerable populations.

In Tamil Nadu, H1N1 infections were higher during the first four months of 2025, and this year's cases peaked from May to August, he said. The government is monitoring daily fever cases, and surveillance and antiviral drug stocks are being monitored as dengue cases also rise in the state.