What is bacteria most commonly caused spontaneous bacterial peritonitis?

There are 3: SBP occurs in patients with ascites, from cirrhosis or other etiologies, 60% of the cases has no bacteria growing on cultures. 40% of patients have positive cultures, most common bacterias are E. Coli, Streptoccocus and Enterococcus.

Strep: Streptococcus is the most common cause of primary bacterial peritonitis. It is a very serious condition that will require in hospital treatment.