Rise of H3N2 Virus in India: Know symptoms, transmission and prevention

Rise of H3N2 Virus in India: Know symptoms, transmission and prevention

March 17, 2023
8 min read

The H3N2 virus has been making headlines in India recently due to its rapid spread and the serious health concerns it poses. With the COVID-19 pandemic still ongoing, the emergence of another respiratory virus is worrying. In this article, we will discuss the H3N2 virus, its symptoms, transmission, prevention, and treatment, and the current situation in India.

1. What is H3N2 virus?

The H3N2 virus is a strain of the influenza A virus that causes respiratory illness in humans. It is also known as the Hong Kong flu, as it was first identified in Hong Kong in 1968. The H3N2 virus is a type of seasonal flu that circulates every year during the winter months in many parts of the world.

2. What are the symptoms of H3N2 virus?

The symptoms of H3N2 virus are similar to those of seasonal flu, including:

  • Fever
  • Cough
  • Sore throat
  • Runny or stuffy nose
  • Body aches
  • Headache
  • Chills
  • Fatigue

In severe cases, H3N2 virus can lead to pneumonia, hospitalization, and even death, especially in vulnerable populations such as the elderly, young children, and people with underlying health conditions.

3. How is H3N2 virus transmitted?

The H3N2 virus is primarily transmitted through respiratory droplets when an infected person talks, coughs, or sneezes. It can also spread by touching a surface contaminated with the virus and then touching one's mouth, nose, or eyes.

4. How can you prevent H3N2 virus?

Prevention measures for H3N2 virus are similar to those for seasonal flu, including:

  • Getting vaccinated against the flu
  • Washing hands frequently with soap and water for at least 20 seconds
  • Avoiding close contact with sick people
  • Covering mouth and nose when coughing or sneezing
  • Staying home when sick
  • Keeping common areas clean and disinfected

5. How is H3N2 virus treated?

Antiviral medications such as oseltamivir (Tamiflu) and zanamivir (Relenza) can be used to treat H3N2 virus. These medications are most effective when started within 48 hours of symptom onset. Treatment may also include supportive care, such as rest, fluids, and fever-reducing medications.

6. What is the current situation of H3N2 virus in India?

The H3N2 virus has been on the rise in India in recent weeks, with several states reporting an increase in flu-like illness and hospitalizations. The situation is particularly concerning in Maharashtra, where cases of H3N2 virus have been detected in high numbers. Health authorities have urged people to take precautions and get vaccinated against the flu.

7. Who is at risk of H3N2 virus?

Like seasonal flu, anyone can get infected with H3N2 virus. However, certain populations may be at higher risk of severe illness and complications, including:

  • People over 65 years of age
  • Children under 5 years of age
  • Pregnant women
  • People with chronic medical conditions such as asthma, diabetes, or heart disease
  • Healthcare workers

8. How does H3N2 virus compare to COVID-19?

H3N2 virus and COVID-19 are both respiratory viruses that can cause serious illness and death. However, there are some differences between the two viruses. COVID-19 is caused by the novel coronavirus, while H3N2 virus is a type of seasonal flu. COVID-19 is more contagious than H3N2 virus, but H3N2 virus has a higher mortality rate.


The H3N2 virus outbreak in India is a reminder of the ongoing threat of respiratory viruses and the importance of public health measures to control their spread. By staying informed and taking appropriate precautions, we can all help to protect ourselves and our communities from the impact of H3N2 virus and other respiratory infections.

Is H3N2 virus more dangerous than other strains of the flu?
Can the H3N2 virus be treated with antibiotics?
How effective is the flu vaccine against H3N2 virus?
What are the symptoms of H3N2 virus?
Who is most at risk of severe illness from H3N2 virus?
Can wearing a mask help prevent the spread of H3N2 virus?
Can you get both H3N2 virus and COVID-19 at the same time?