Community-acquired pneumonia: pneumococcal vaccine.

INTRODUCTION: In the Northern Hemisphere about 12/1000 people per year (on average) contract pneumonia while living in the community, with most cases caused by Streptococcus pneumoniae. Mortality ranges from about 5% to 35% depending on severity of disease, with a worse prognosis in older people, men, and people with chronic diseases. METHODS AND OUTCOMES: We conducted a systematic overview, aiming to answer the following clinical question: …