| microbial pathogens of adult community-acquired pneumonia in southern estonia. | prospective analysis of the etiology of community-acquired pneumonia in 209 inpatients (mean age 56.2+/-11.2 years) was performed at the lung hospital of tartu university, estonia. majority of the patients (87.6%) had at least one significant modifying or risk factor and 30.6% had severe community-acquired pneumonia. streptococcus pneumoniae, beta-hemolytic streptococci, klebsiella pneumoniae, and moraxella catarrhalis were the most frequent pathogens (22.0, 12.2, 11.4, and 10.2%, respectively). ... | 2006 | 16778466 |