The recent H1N1 surge in India has renewed attention on seasonal influenza and how easily respiratory infections can spread when basic precautions are ignored. Former WHO Chief Scientist Dr Soumya Swaminathan has said that there is no reason for panic, but the current rise in influenza cases is a reminder that many of the health habits adopted during the Covid-19 pandemic have gradually disappeared.
During Covid, practices such as wearing masks, washing hands, maintaining respiratory hygiene, avoiding crowded places when sick and covering the mouth while coughing helped reduce the circulation of respiratory viruses. As those habits became less common, seasonal influenza once again became more visible. Dr Swaminathan’s message is therefore not simply about H1N1; it is about remembering that seasonal flu also deserves attention as a public-health issue.
Why Are H1N1 and Influenza Cases Rising?
Influenza is a seasonal respiratory infection, and its activity naturally changes at different times of the year. In India, influenza can circulate throughout the year, with outbreaks becoming more noticeable during particular seasonal periods. WHO notes that influenza viruses continue to circulate globally and can cause illness ranging from mild symptoms to serious complications.
According to Dr Swaminathan, the Covid period demonstrated how strongly human behaviour can influence the spread of respiratory infections. Reduced travel, mask use, social distancing and improved respiratory hygiene contributed to a major reduction in influenza circulation during the pandemic. Many of those behaviours have now disappeared from everyday life.
This does not automatically mean that H1N1 has suddenly become more dangerous. The increase in reported infections needs to be considered alongside testing, surveillance, hospitalisation and the severity of illness.
Are H1N1 Cases Being Underestimated?
The actual number of influenza infections may be difficult to determine because not every person with flu-like symptoms is tested. At the same time, increased testing and stronger surveillance can result in more cases being detected and reported.
India’s influenza surveillance system, including monitoring through ICMR laboratories, helps health authorities follow circulating influenza viruses and identify changes in disease patterns. Dr Swaminathan has stressed that the important question is not simply whether reported case numbers are increasing, but whether severe infections, hospital admissions and deaths are also showing a significant rise.
This distinction is important because a rise in detected cases does not necessarily indicate that the virus has become more severe.
Does Everyone With Flu Need an RT-PCR Test?
Not everyone with fever, cough or other flu-like symptoms automatically needs an RT-PCR test.
Dr Swaminathan has explained that doctors can decide whether testing is necessary by considering the person’s symptoms, risk factors and overall clinical situation. Testing can be particularly useful when healthcare professionals need to distinguish between infections or monitor unusual disease patterns.
At the public-health level, however, surveillance remains important. Continuous monitoring helps authorities identify changes in circulating viruses and detect unusual developments at an early stage.
Who Is Most at Risk From Influenza?
Although influenza can affect people of all ages, certain groups have a greater risk of developing severe disease or complications.
WHO identifies several priority groups for seasonal influenza vaccination, including older adults, pregnant women, people with certain chronic medical conditions and healthcare workers. Young children are also particularly vulnerable to influenza-related complications.
People with conditions affecting the heart, lungs, kidneys, liver or metabolism, as well as people with weakened immune systems, may also face a higher risk of complications.
For these individuals, influenza should not be dismissed as simply a routine cold. WHO notes that severe influenza can lead to complications such as pneumonia and, in serious cases, hospitalisation or death.
Should You Get the Flu Vaccine?
Vaccination remains one of the most important tools for preventing influenza and reducing its severe consequences. Dr Swaminathan has encouraged people who are eligible to consider getting the flu vaccine rather than waiting until influenza activity increases further. She also noted that immunity does not develop immediately after vaccination.
WHO recommends seasonal influenza vaccination particularly for people at higher risk, including pregnant women, older adults, people with chronic illnesses and healthcare workers.
Influenza vaccination is updated periodically because influenza viruses change over time. WHO continuously monitors circulating viruses and recommends vaccine compositions for different influenza seasons.
The vaccine does not guarantee that a person will never develop influenza, but vaccination can reduce the risk of severe disease and complications. WHO considers vaccination the best way to prevent influenza.
Why Antibiotics Are Dangerous for H1N1
One of the biggest concerns highlighted by Dr Swaminathan is the unnecessary use of antibiotics.
H1N1 is an influenza virus, and antibiotics are designed to treat bacterial infections, not viral infections. Taking an antibiotic without medical advice therefore does not treat the underlying influenza infection.
Unnecessary antibiotic use can also contribute to antimicrobial resistance. This occurs when bacteria become resistant to medicines that were previously effective against them, making future bacterial infections harder to treat.
For this reason, people should not automatically take antibiotics whenever they develop fever, cough or a sore throat. A doctor should determine whether an antibiotic is appropriate.
What About Antiviral Medicines?
Antiviral medicines can have a role in treating influenza, particularly for people at higher risk of severe disease or those with serious illness. However, they should be used appropriately under medical guidance rather than taken through self-medication.
WHO recommends that people at high risk of complications or those with severe symptoms seek medical attention promptly because antiviral treatment may be appropriate.
The decision to use an antiviral depends on factors such as symptoms, severity, timing and the patient’s underlying health risks.
The Covid Lessons We Should Not Forget
Perhaps the most important message from the current H1N1 surge is that simple preventive measures still matter.
During the Covid pandemic, people became much more aware of how respiratory viruses spread. Masking, hand hygiene, cough etiquette, avoiding close contact while sick and staying away from crowded environments when unwell became familiar practices.
Dr Swaminathan believes many of these habits have now faded, even though they remain useful beyond Covid. Covering the mouth and nose while coughing or sneezing, washing or sanitising hands, wearing a mask when appropriate and avoiding spitting in public places can help reduce the spread of respiratory infections.
Staying home when sick is equally important. Going to work, school or using public transport while experiencing an infectious respiratory illness can increase the chances of passing the infection to others.
H1N1 Surge Is a Reminder, Not a Reason for Panic
The current rise in H1N1 and other influenza infections should be taken seriously without creating unnecessary fear. Seasonal influenza is a recurring public-health challenge, and most people recover from the infection, but vulnerable individuals can develop serious complications.
The broader lesson is that public-health protection does not begin and end with a pandemic. Everyday measures such as good respiratory hygiene, appropriate vaccination, responsible medicine use and timely medical care can remain valuable throughout the year.
The H1N1 surge is therefore a timely reminder of what Covid taught the world: simple habits can make a meaningful difference in controlling respiratory infections. Rather than waiting for another major health emergency, maintaining those habits during seasonal flu periods can protect individuals, families and vulnerable members of the community.
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