Surge in H1N1 Cases in Delhi-NCR Amid Monsoon Changes

As the monsoon season progresses, Delhi-NCR is witnessing a significant increase in H1N1 influenza cases. Health professionals are reporting more patients with respiratory symptoms, urging caution among vulnerable groups. Experts attribute this rise to weather changes and recommend isolation and prompt medical attention for those infected. With the potential for severe complications in at-risk populations, the situation calls for heightened awareness and preventive measures.

By Narendra Chaudhary Jul 31, 2026, 19:46 IST

Increase in H1N1 Influenza Cases

With the onset of monsoon and changing weather patterns, there has been a noticeable rise in H1N1 influenza cases in the Delhi-NCR region over the past few weeks. Medical professionals are reporting an uptick in patients presenting with symptoms such as fever, cough, cold, and other respiratory issues. Dr. Satish Kaul, Principal Director and Unit Head of Internal Medicine at Fortis Memorial Research Institute in Gurugram, noted that the number of patients with respiratory ailments has increased significantly in hospitals over the last three to four weeks. Daily, doctors are encountering about 7 to 10 patients with confirmed H1N1 cases in their outpatient departments. Additionally, there has been a slight rise in COVID-19 cases. However, most H1N1 infections are mild, with fever typically resolving within three to five days. Doctors have cautioned that elderly individuals, young children, and those with pre-existing conditions such as diabetes, hypertension, and heart disease are at a higher risk for severe complications.

Weather Changes and Influenza Spread

Dr. Sanjeev Sinha, a professor in the Medicine Department at AIIMS Delhi, attributed the increase in influenza cases to the weather changes during the monsoon season. He explained that the drop in temperature during this period facilitates the spread of the influenza virus. Patients are experiencing symptoms like sore throat, runny nose, dry cough, and headaches. He further emphasized that individuals with weakened immune systems, such as the elderly and those suffering from diabetes, hypertension, and chronic kidney disease, are more susceptible to infections.

Precautions and Recommendations

Dr. Sinha mentioned that there has been a rise in patients suffering from upper respiratory tract infections in their outpatient department, with many testing positive for influenza, particularly H1N1 and Influenza A. He advised those infected to take precautions, stating, "If you contract this infection, isolate yourself at home for two to three days and wear a face mask. Seek medical attention promptly if symptoms arise." Dr. Atul Kakkar, Chairperson of Internal Medicine at Sir Ganga Ram Hospital, also noted a seasonal increase in viral respiratory infections in Delhi, with many patients exhibiting flu-like symptoms.