Pneumonia

Pneumonia is an acute respiratory infection that affects the lungs and remains a major public health concern worldwide. It occurs when bacteria, viruses, or fungi infect the alveoli, causing inflammation and fluid or pus accumulation, which leads to symptoms such as cough, fever, chest pain, and difficulty breathing. Pneumonia can range from mild to life-threatening, especially in young children, older adults, and individuals with weakened immune systems. In public health, pneumonia is a leading cause of morbidity and mortality, particularly in low- and middle-income countries where access to healthcare, nutrition, and vaccination may be limited. Risk factors include malnutrition, air pollution, smoking, overcrowding, and chronic diseases. Prevention strategies focus on vaccination, improved nutrition, reduction of indoor and outdoor air pollution, early diagnosis, and timely treatment with appropriate antimicrobials. Strengthening primary healthcare systems and community awareness is essential to reduce the global burden of pneumonia.