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New Delhi: Delhi has recorded a sharp increase in H1N1 influenza cases, with 1,344 infections reported so far this year compared with 229 during the corresponding period last year. The nearly six-fold rise has prompted renewed attention to seasonal influenza as the monsoon continues.

Doctors have reported an increase in patients with upper respiratory infections, while some throat-swab samples have tested positive for influenza, including H1N1 and other strains of Influenza A.

What is H1N1?

H1N1 is a strain of influenza virus that primarily affects the respiratory system. It can spread through respiratory droplets when an infected person coughs or sneezes, as well as through close contact.

Common symptoms include fever, cough, sore throat, runny nose, body aches, tiredness, chills, sweating and red or watery eyes.

Doctors are exercising additional caution because several seasonal illnesses can produce similar symptoms. Fever, body aches and fatigue, for instance, may occur with both influenza and dengue, making medical assessment important when symptoms persist or worsen.

Who faces greater risk?

Older adults, young children and people with weakened immunity are more vulnerable to influenza complications. Those with conditions such as diabetes, hypertension, chronic kidney disease, chronic liver disease and cancer may also face a higher risk of severe illness.

Children below five years of age are another vulnerable group.

Prevention remains important

Annual influenza vaccination can reduce the risk of severe illness and complications, although it may not completely prevent infection.

Doctors also recommend regular handwashing, covering the mouth and nose while coughing or sneezing, avoiding close contact with people who are unwell and seeking medical advice when significant flu-like symptoms develop.

With influenza activity rising during the monsoon in several parts of India, health experts are urging people to remain alert without panicking.