肺部细菌性感染是危及人类健康及导致死亡的常见病因。据美国资料报道,在住院患者中,死于肺感染者占第3位,我国部分资料统计占第5位。根据肺部感染的临床表现及胸部X线征象作出一般诊断多无困难, Bacterial infections in the lungs are a common cause of endangering human health and death. According to the U.S. data, among the hospitalized patients, those who died of lung infection accounted for No. 3, and some of China’s data accounted for No. 5. According to the clinical manifestations of pulmonary infection and chest X-ray signs to make a general diagnosis without difficulty,