ABSTRACT
Numerous studies in adults have demonstrated that E. coli, klebsiellae, Enterobacter organisms, and enterococci are the typical isolates recovered from patients with biliary tract infection.10 It has also been recognized for some time that Clostridium perfringens may occasionally be involved in serious complications of biliary tract infection, such as sepsis and emphysematous cholecystitis.11 Several reports indicate that anaerobes, especially B. fragilis group, may be more common in biliary tract infections than had been appreciated,10-14 and they may be recovered in up to 40% of such infections.
