February is a time when many people notice an increase in flu, cough, fever, and chest infections. Hospitals and clinics often see a rise in respiratory illnesses during late winter. Understanding why flu and chest infections increase in February and learning how to prevent them can help you protect yourself and your family. This guide explains the causes, symptoms, prevention methods, and practical health tips based on reliable medical knowledge and seasonal health patterns. Why Flu and Chest Infections Increase in February Several factors contribute to the rise of respiratory illnesses in late winter. 1. Cold Weather Weakens the Respiratory System Cold air can irritate the airways and reduce the body’s ability to fight viruses. When people breathe in cold, dry air, the nose and throat become more vulnerable to infection. Cold weather also causes people to stay indoors more often, increasing close contact and making it easier for viruses to spread. Target keyword: why flu increa...
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