#Pneumonia is an infection that inflames the air sacs in one or both lungs, causing them to fill with fluid or pus. This can lead to symptoms like cough (with phlegm or pus), fever, chills, and difficulty breathing. It can be caused by bacteria, viruses, or fungi.
Common causes include:
Bacterial pneumonia (e.g., Streptococcus pneumoniae)
Viral pneumonia (e.g., influenza, COVID-19)
Fungal pneumonia (e.g., Pneumocystis jirovecii, infants, elderly individuals, and those with weakened immune systems. Treatment depends on the cause and severity—bacterial pneumonia is treated with antibiotics, while viral pneumonia may require antiviral medications or supportive care.
