Respiratory infections such as colds, flu, cough, and throat infections tend to rise during seasonal transitions. Doctors say this happens due to a combination of environmental changes and the body’s response to them.
1. Sudden Temperature Fluctuations
When the weather changes quickly, the body takes time to adjust. This temporary stress can weaken the immune system, making it easier for viruses to infect you.
2. Viruses Thrive in Certain Conditions
Many respiratory viruses survive longer in cold and dry air. These conditions allow them to spread more easily from person to person.
3. More Time Spent Indoors
During cold, rainy, or extremely hot weather, people stay indoors more often. Closed and poorly ventilated spaces make it easier for germs to spread.
4. Rise in Air Pollution
Seasonal changes, especially in winter, often lead to higher pollution levels. Polluted air irritates the respiratory tract, increasing the risk of infections.
5. Dry Air Affects the Airways
Dry air can dry out the mucus lining in the nose and throat. Since mucus helps trap germs, dryness reduces this natural defense.
Preventive Measures
- Wash hands regularly.
- Stay well hydrated.
- Eat a balanced, immunity-boosting diet.
- Wear a mask in crowded or polluted areas.
- Avoid sudden exposure to extreme temperatures.
- Get enough sleep.
- Take recommended vaccinations.
Conclusion:
Respiratory infections increase during weather changes because of weakened immunity, favorable conditions for viruses, and environmental factors like pollution. Simple daily precautions can greatly reduce the risk.


