2021, an update of the S3 guideline of the German Society of Pneumology and Respiratory Medicine (DGP) on community-acquired pneumonia was published, in which the Swiss Society of Pneumology (SGP) and the Swiss Society of Infectious Diseases (SGInf), among others, were also involved [1]. The main changes of the update were presented at DGIM. The most important innovation: the duration of therapy is becoming shorter and shorter.