세균, 바이러스, 곰팡이 등의 감염으로 인해 폐의 공기 주머니에 염증이 생겨 고름이나 액체가 차는 호흡기 질환.
An inflammatory condition of the lung—affecting primarily the microscopic air sacs known as alveoli—usually caused by infection with viruses or bacteria.
예문:
"The patient was admitted to the hospital with a severe case of bacterial pneumonia."
"Early symptoms of pneumonia often include chest pain, fever, and a productive cough."
"Walking pneumonia is a milder form of the illness that may not require bed rest."