肺炎(pneumonia)是指包括终末气道、肺泡腔及肺间质等在内的肺实质炎症,病因以感染为最常见,如细菌、病毒、真菌、寄生虫等;其他尚可由理化因素、免疫损伤、过敏及药物所致。引起肺炎的病原体较多,肺炎病原学诊断仍然存在不少困难,耗费时间,且所费代价很高。 Pneumonia (pneumonia) refers to the end of the airways, alveolar space and lung interstitial lung inflammation, etc., the etiology of infection is the most common, such as bacteria, viruses, fungi, parasites, etc .; others can still be physical and chemical factors, Immune damage, allergies and drugs. Cause more pathogens of pneumonia, pneumonia etiology diagnosis there are still many difficulties, time-consuming, and the high cost of fees.