This article explains the key symptoms and signs of lung infections like pneumonia, emphasizing their contagious nature, early warning signs, and the importance of prompt medical care for effective treatment.

Lung infections, such as pneumonia, involve inflammation of the lung's air sacs, which can accumulate fluid or pus. These infections are caused by bacteria, viruses, or fungi. One common question is, "Can lung infections spread easily?" The answer is yes, they are contagious through airborne droplets from infected individuals. Factors like age, health status, and lifestyle influence susceptibility. Initial symptoms may be mild and resemble cold or flu, such as fatigue, decreased appetite, sweating, and chest discomfort. More serious signs include a persistent cough with colored mucus, breathing issues, or chest pain. Older adults might display confusion and mild fever. Early medical attention is crucial for accurate diagnosis and treatment.