Community-Acquired Pneumonia (CAP) is a frequent disease seen in all ages, demanding important health
resources. The overall mortality is 13%, but reaches 50% in patients hospitalized in intensive care units (severe CAP).
Despite extensive investigations, up to 50% of cases remain without an identified pathogen. During the last years, there have been different guidelines trying to uniform management and treatment of CAP. There have been propositions to change the classification of typical and atypical pneumonia because of it's unusefulness and to classified them according to the severity of illness, age of the patients, and the presence of comorbidity. CAP is more frequent in advanced age, and at least 213 have coexisting illness being respiratory disease the most prevalent. Streptococcus pneumoniae remains the most common pathogen isolated independently of the severity of illness, although there are some differences in the spectrum of pathogens based on the severity of the pneumonia and the presence of coexisting illness. In the present article we will review some factors that have been related to mayor risk for developing severe CAP, specific pathogens, and poor outcomе.
Cabello A., H. ., Ruiz C., M. ., Lui G., A., & Felipe. (1999). Neumonía comunitaria severa. Diagnóstico, pronóstico y pautas terapéuticas . Revista Hospital Clínico Universidad De Chile, 10(2), pp. 113–24. https://doi.org/10.5354/2735-7996.1999.80754
