The change in seasons in India used to have a certain pattern over the years. The winter season used to be synonymous with common cold and cough, summer with allergies and rash, whereas monsoon with fever. However, changing climatic conditions have disturbed this pattern.
Sudden temperature shifts, unexpected rainfall and shorter or fluctuating winters can influence when respiratory infections appear and how they spread. At the same time, worsening air quality in several cities can put additional pressure on respiratory health. So when sneezing, coughing, fatigue or a blocked nose suddenly appear, one question can be difficult to answer: is it a cold, an allergy or the flu?
Why can it be difficult to tell them apart?
Colds, allergies and influenza can share several symptoms. Sneezing, coughing, fever, tiredness, a blocked or runny nose and a sore throat may occur in more than one of these conditions. Dr Bakul J Parekh, Senior Paediatrician, MD, DCH, FIAP, Bakul Parekh Children’s Hospital, Mumbai, explained, “Many people experience symptoms like sneezing, coughing, fever, tiredness, a blocked or runny nose, and a sore throat, often more than one at the same time.” Because of this overlap, identifying the illness based only on symptoms can be tricky. However, knowing the differences becomes particularly important with influenza, which can become serious if it is not treated in time.
How is flu different from a common cold?
A common cold and influenza may both appear suddenly, but the flu generally causes more severe symptoms. As per the expert cited in the source, flu tends to start with high fever, muscle pains, headaches, tiredness, and dry coughs. The above-listed symptoms may be much more severe as compared to those that are typical of an ordinary cold. One of the main reasons why one should never consider dismissing flu-like symptoms as just an ordinary cold is that they may be much more severe in nature.
Can changing weather and pollution affect respiratory health?
The climatic trends in India are getting more unpredictable due to unexpected rains, temperature changes, and odd climatic seasons being experienced across various regions. This can affect the survival and transmission of respiratory viruses. There is also the issue of air pollution, which is another challenge. This is because polluted air affects the respiratory system.
This changing environment also means that the familiar idea of associating particular infections with a particular season may no longer always hold true.
Why does flu vaccination matter?
The source highlights annual influenza vaccination as one of the key ways to reduce the risk of severe flu-related illness. Dr Jejoe Karankumar, Medical Affairs Director, Abbott India, said, “As climate change alters disease patterns, prevention becomes more important than ever.” He added that influenza vaccination is an effective tool for reducing the risk of severe flu-related illness.
The source also notes that flu vaccination can be particularly relevant for people at higher risk of complications, including older adults, people with diabetes, pregnant women and those with weakened immunity. The influenza virus changes over time, which is why flu vaccines are updated annually to target the strains expected to circulate most widely. The source notes that these updates are guided by the World Health Organization.
Healthy habits can also support immunity
But vaccination alone is not enough to keep your body safe. According to the source, it is very important to maintain a healthy lifestyle all the time. For example, it may include a healthy diet with sufficient protein and fibre, as well as nutrients like vitamin C, zinc, and vitamin D, which should be part of a healthy diet.
Some simple hygiene actions are still relevant too. For instance, it includes covering one’s mouth and nose during coughs and sneezes, regular hand washing and keeping a certain distance from other people when you feel sick.
Don't ignore persistent or severe flu-like symptoms
Not every cough or runny nose means you have influenza, but the overlap between respiratory illnesses makes it important to pay attention to how symptoms develop.
With India's seasons becoming less predictable, understanding the difference between a cold, allergies and flu can help people respond more appropriately when they fall ill.
Disclaimer: Tips and suggestions mentioned in the article are for general information purposes only and should not be construed as professional medical advice.
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