
Delhi recorded 1,777 H1N1 cases this year. Kerala reported 7,421 cases and 88 deaths. Health ministry urges vigilance as flu rises across India.
Delhi recorded 1,777 H1N1 cases this year, including 114 reported on Thursday, according to Delhi health department data. Several states are reporting a rise in influenza and flu-like illnesses.
Union Health Minister J P Nadda on Friday reviewed the national influenza situation and healthcare preparedness, PTI reported. The Health Ministry urged people to stay alert to H1N1 symptoms. In a post on X on Saturday, the ministry listed fever, cough, sore throat, headache, runny nose, body aches and fatigue. Other symptoms include lethargy, loss of appetite, nausea, vomiting, joint and muscle pain and diarrhoea. The ministry advised people not to ignore persistent symptoms and to seek medical advice at the nearest healthcare centre.
The capital has recorded 2,602 influenza cases so far this year. That includes 2,392 Influenza-A infections and 210 Influenza-B cases. H1N1 accounts for the majority of Influenza-A infections. Of the 2,392 Influenza-A cases, 1,777 are H1N1, 37 are H1, 138 are H3 and 440 fall under other categories. The 210 Influenza-B cases include 200 Victoria strain infections and 10 others.
Delhi Health Minister Pankaj Kumar Singh said the capital was fully equipped to handle the seasonal rise in infections. He spoke after attending the meeting chaired by Nadda. The health department said there is no shortage of hospital beds, doctors, medicines or essential medical equipment. Patient numbers are being monitored and hospital arrangements strengthened.
Seasonal influenza is an acute respiratory infection caused by influenza viruses circulating globally. Young children and elderly people with co-morbidities are most vulnerable, the Delhi health department said. Those with diabetes, hypertension and chronic kidney disease are at higher risk.
India experiences two seasonal influenza peaks each year, between January and March and during the post-monsoon period. H1N1 is the predominant subtype in Delhi this year, while H3N2 was predominant last year, the department said.
The increase is not limited to Delhi. According to The Hindu, H1N1 and influenza-like illnesses are rising in Mumbai, Bengaluru and Chennai. Kerala has recorded a significantly higher number of cases and deaths.
In Mumbai, the Brihanmumbai Municipal Corporation recorded 309 H1N1 cases between June 1 and August 15, compared with 72 during the same period in 2025. Bengaluru has reported an increase in influenza-like illnesses, viral fever and respiratory infections, particularly among children. Doctors at Bengaluru's Indira Gandhi Institute of Child Health were confirming around two to three H1N1 cases a day among children who were tested, The Hindu reported. Paediatricians in Chennai have reported H1N1 cases among children over the past two weeks.
Kerala recorded 526 Influenza-A cases and six deaths in May. That rose to 2,050 cases and 26 deaths in June and 2,899 cases and 31 deaths in July. Up to August 17, another 1,476 cases and 21 deaths were reported. The cumulative tally stood at 7,421 cases and 88 deaths, with almost all fatalities reported among people aged over 50.
Telangana health officials said H1N1 cases were lower than during the corresponding period last year.
The Delhi State Health Mission is monitoring influenza through the Integrated Disease Surveillance Programme, tracking morbidity and mortality. The State Surveillance Unit is monitoring daily data through the IDSP-IHIP portal. The health department issued advisories to hospitals and district officials on screening, reporting and monitoring influenza and COVID-19 cases. Guidelines cover patient categorisation, treatment, ventilatory management, mask use and home care.
Authorities advised people to maintain respiratory hygiene, use masks in crowded places, wash hands frequently and avoid close contact with people suffering from respiratory illnesses. The department also advised against taking medicines without consulting a doctor.
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