What is the role of gram-negative bacteria in the etiology of chronic bacterial prostatitis (CBP)?

Updated: Jan 15, 2019
  • Author: Samantha D Kraemer, MD; Chief Editor: Edward David Kim, MD, FACS  more...
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The gram-negative Enterobacteriaceae family of bacteria are the most common causative organisms, with Escherichia coli the most common strain, found in around 80% of cases. [9, 10] Other bacteria of the Enterobacteriaceae family (ie, Pseudomonas aeruginosa, Serratia species, Klebsiella species, Proteus species, and Enterobacter aerogenes) make up another 10%-15% of infections. Enterococci are present in 5%-10% of prostate infections, but other gram-positive organisms have a questionable role as their localization in cultures in inconsistent. [11]

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