H1N1 makes up 98% of India's flu cases, but ICMR says no need to panic
New Delhi: The H1N1 strain of influenza A accounts for nearly 98% of all such cases currently detected in India, with H3N2 making up the remaining 2-3%, according to the Indian Council of Medical Research (ICMR). The disclosure comes amid rising concerns over a spike in H1N1 infections in several states.
Speaking at a press conference on Tuesday, ICMR Director-General Dr. Rajiv Bahl sought to allay fears, stating that there was “absolutely no cause for panic.” He explained that the virus circulating in the country is the familiar H1N1 pdm09 strain, which first emerged during the 2009 pandemic and has since become a seasonal influenza virus, much like the strains seen in regular flu seasons.
Dr. Bahl’s remarks were aimed at reassuring the public, particularly as reports of H1N1 cases have surged in Delhi, where over 2,300 of the 3,000 influenza infections recorded have been identified as H1N1. The Delhi Chief Minister has called for an emergency meeting to review the situation, and hospitals have been advised to remain vigilant. However, the ICMR chief emphasised that the current rise is consistent with the seasonal behaviour of influenza and does not constitute a public health emergency.
Addressing the question of vaccination, Dr. Bahl said there is no urgent need for the general population to take the seasonal flu vaccine. He noted that while the World Health Organization (WHO) recommends seasonal influenza vaccination, it is a recommendation and not a directive. The Union government, he added, has decided not to include the influenza vaccine in the National Immunisation Programme. However, he advised that people aged above 65 and those with weakened immune systems—such as individuals on immunosuppressive therapy or living with chronic illnesses—could discuss vaccination with their doctors.
The ICMR chief also explained that minor genetic changes in influenza viruses occur naturally every season and do not necessarily signal the emergence of a new or more dangerous strain. Most infections remain mild and self-limiting, with patients recovering on their own with supportive care, he said.
India’s influenza surveillance system has been strengthened over the years to monitor such seasonal trends. The ICMR network currently includes 73 sentinel hospitals that regularly test samples from patients suffering from severe acute respiratory infections (SARI) and influenza-like illness (ILI). In addition, a wider network of 167 virus research and diagnostic laboratories is involved in diagnostic testing across the country. This surveillance not only tracks Influenza A and B but also other respiratory viruses such as SARS-CoV-2, human metapneumovirus, adenovirus, and parainfluenza viruses, providing a comprehensive picture of the respiratory virus situation in India.
While most healthy individuals recover from H1N1 without any medical intervention, Dr. Bahl cautioned that certain groups face a higher risk of complications such as pneumonia. These include older adults, young children, pregnant women, and immunocompromised individuals. For such high-risk patients, antiviral medications may be prescribed, but antibiotics have no role in treating viral influenza unless a secondary bacterial infection is present.
The ICMR chief advised people exhibiting flu-like symptoms to rest at home, stay hydrated, and follow basic respiratory and hand hygiene—such as covering coughs and sneezes and washing hands frequently—to prevent the spread of the virus. He stressed that the present increase in H1N1 infections should be viewed through the lens of seasonal influenza patterns and not as an extraordinary health threat.
Health experts have echoed these reassurances, noting that H1N1 pdm09 has been circulating globally for over a decade and is now one of the regular seasonal flu subtypes. The key to managing the situation, they say, lies in sustained surveillance, timely medical care for high-risk individuals, and public awareness about preventive measures.
