Policy & Public Health

H3N2 influenza A Outbreak: Delhi Hospitals Report Surge in Severe Flu-like Illness

Hospitals across Delhi are witnessing a sharp rise in cases of flu-like illness marked by high-grade fever, sore throat, intense body aches, headaches, and extreme fatigue.

Unlike seasonal flu, patients infected during this outbreak are showing poor response to standard over-the-counter medicines such as Paracetamol, with symptoms persisting for a week or more. Several individuals have required hospital admission after developing complications, health officials reported.

About H3N2 influenza A

  • H3N2 influenza A is a subtype of the Influenza A virus.

  • It spreads primarily through respiratory droplets when an infected person coughs or sneezes.

  • The infection usually presents with sudden onset of high fever, severe body aches, throat pain, headache, cough, and marked weakness.

  • In severe cases, especially among vulnerable individuals, it can cause complications like pneumonia, bronchitis, or worsening of pre-existing conditions.

High-Risk Groups

Doctors warn that certain groups are more susceptible to developing severe illness or complications:

  • Young children (especially under 5 years)

  • Older adults (above 60 years)

  • Pregnant women

  • Individuals with chronic illnesses like Asthma, Diabetes, Chronic obstructive pulmonary disease (COPD), or heart disease

  • Immunocompromised individuals

Prevention Measures

Health experts advise the public to stay vigilant and adopt preventive strategies to curb the spread:

  • Practice good hand hygiene—wash hands frequently with soap and water

  • Wear masks in crowded places and maintain respiratory etiquette (cover mouth while coughing or sneezing)

  • Avoid close contact with people showing symptoms of flu

  • Stay home if feeling unwell to prevent infecting others

  • Get the annual Influenza vaccine, especially for high-risk groups

Doctors recommend seeking prompt medical care if symptoms persist beyond 48–72 hours, worsen rapidly, or are accompanied by shortness of breath, chest pain, confusion, or a drop in oxygen levels. Early evaluation can help prevent complications and reduce the risk of hospitalization.

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