H1N1 Resurgence in Delhi: Symptoms, Spread & Prevention

Why in the News?

Delhi is witnessing a sharp rise in H1N1 (swine flu) and Influenza B cases, leading to a surge in seasonal flu infections. With multiple outbreaks in previous years, health authorities emphasize preventive measures to curb the spread and protect high-risk groups.

H1N1 Resurgence in Delhi: Symptoms, Spread & Prevention

Current Situation

  • Delhi is experiencing a surge in seasonal flu cases, with H1N1 (swine flu) and Influenza B being the main contributors.
  • H1N1, a subtype of Influenza A, was first reported in India in May 2009 and has caused multiple outbreaks, including in 2021, 2022, 2023, and now in 2024.

Symptoms and Transmission

  • The virus spreads primarily through respiratory droplets released when an infected person coughs or sneezes.
  • It can also spread via contaminated surfaces when individuals touch their mouth or nose after contact.
  • Common symptoms include fever, cough, sore throat, body aches, chills, headache, and fatigue.
  • In severe cases, it may cause pneumonia and respiratory failure, posing higher risks for children, elderly individuals, and those with pre-existing health conditions.

Prevention and Precautions

  • Currently, no specific vaccine is available exclusively for H1N1, though seasonal flu vaccines may offer some protection.
  • Preventive measures include frequent handwashing, wearing masks, maintaining respiratory hygiene, and avoiding close contact with infected individuals.
  • Strengthening immunity through a healthy diet and staying hydrated can help reduce infection risks.
  • Early medical consultation is crucial if flu-like symptoms persist, especially for high-risk individuals.

About H1N1 Virus:

  • Swine Influenza (Swine Flu) is a respiratory disease in pigs caused by Influenza A viruses, leading to frequent outbreaks in pigs.
  • Humans do not usually get swine flu, but infections can occur and have been reported.
  • Human-to-human transmission was initially limited, but the virus has evolved to spread more easily.
  • First case in India was reported in May 2009, followed by multiple outbreaks in 2021, 2022, 2023, and 2024.
  • Transmission occurs through coughing, sneezing, or contact with contaminated surfaces, followed by touching the mouth or nose.