Pneumonia

A black and white X-ray picture showing a triangular white area on the left side. A circle highlights the area.

The bacterium Streptococcus pneumoniae, a common cause of pneumonia, imaged by an electron microscope

Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli. Typical signs and symptoms include a cough with phlegm, chest pain, fever, and trouble breathing. Symptoms can vary from mild to severe. People who are old or very young may not have typical symptoms. Usually people begin improving within three days of starting treatment; however, they may feel tired for more than a month afterwards.

单词	Hypostatic pneumonia
释义	Hypostatic pneumonia 英语百科 Pneumonia Pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli. Typical signs and symptoms include a cough with phlegm, chest pain, fever, and trouble breathing. Symptoms can vary from mild to severe. People who are old or very young may not have typical symptoms. Usually people begin improving within three days of starting treatment; however, they may feel tired for more than a month afterwards.
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Hypostatic pneumonia

Pneumonia