Question

what do you mean by pneumonia? ​

Answer 1

Answer:

Pneumonia is the illness of lungs which lead to difficulty in breathing

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Answer 2

Answer:

Explanation:

Pneumonia is an infection in one or both lungs. It can be caused by bacteria, viruses, or fungi. Bacterial pneumonia is the most common type in adults. Pneumonia causes inflammation in the air sacs in your lungs, which are called alveoli. The alveoli fill with fluid or pus, making it difficult to breathe.