Respiratory infections often start with everyday symptoms like a cough or mild fever—but when do these signs signal something more serious? In this insightful guide from the pulmonology experts at Karpagam Hospital, you'll learn how to differentiate between common colds, bronchitis, pneumonia, and other lung infections. Discover the red flags that demand medical attention, understand how infections spread, and explore the latest treatments and prevention strategies. Whether you're a concerned parent or someone managing chronic lung issues, this guide will empower you with knowledge and timely action steps for better respiratory health.