在五十年代后期和六十年代初期,小儿原发性葡萄球菌肺炎是婴儿患病及死亡的常见原因。产生这种发病率高峰的原因之一,为细菌已适应当时的抗菌素治疗,抗青霉素细菌是很常见的。近十年来原发性葡萄球菌肺炎的发病率逐渐降低。什么原因引起这种下降呢?回答是困难的。医院中应用新型青霉素或其他抗菌 In the late fifties and early sixties, children with primary Staphylococcus aureus pneumonia were common causes of illness and death in infants. One of the causes of this peak incidence is that it is common for bacteria to have adapted to the then antibiotic treatment. The incidence of primary staphylococcal pneumonia in the past decade has been gradually reduced. What causes this decline? The answer is difficult. New penicillin or other antibacterials are used in hospitals