Rahnella aquatilis is a water-residing gram-negative rod, a member of
the family Enterobacteriaceae, isolated rarely from clinical specimens
of immunocompromised patients. A case of a surgical wound infection c
aused by R. aquatilis in a patient who underwent a prosthetic surgical
intervention is reported. The presence of inducible beta-lactamase wa
s suggested by the disk induction test and the conventional agar dilut
ion assay. Literature on R. aquatilis infections in humans is reviewed
.