Gram negative bacillus that has potential to produce "broad-spectrum" beta-lactamases that can hydrolyze penicillins and cephalosporins.
Most AmpC organisms are nosocomially encountered, are GI flora and are part of the Enterobacteriaceae family.
Infections due to Citrobacter spp. can include urinary tract infections, hospital-acquired or ventilator-associated pneumonia, prosthetic device infections and other nosocomial infections.
Patients with isolation of AmpC producing organisms may require contact precautions.