Once the etiology of CAP has been identified on the basis of reliable microbiological methods, antimicrobial therapy should be directed at that pathogen. (Moderate recommendation; leel III eidence.

• 在可靠的微生物学方法基础上，一旦CAP病因明确，直接进行针对病原体的抗生素治疗。（中等推荐；三级证据）