Effective mitigation of an outbreak of New Delhi metallo-β-lactamase-producing Escherichia coli infections in a small animal veterinary teaching hospital.

Summary: A veterinary teaching hospital faced a daunting challenge: an outbreak of a dangerous "superbug"—E. coli bacteria carrying the NDM gene, which makes it resistant to most antibiotics. This outbreak affected both the facility's environment and the dogs and cats being treated. To fight back, the hospital staff launched a comprehensive "clean sweep." They increased deep cleaning, mandated strict education on hygiene, upgraded protective gear protocols, and constantly tested surfaces and patients.

The strategy worked, but with a catch. While the hospital environment became cleaner rapidly and active infections stopped completely within months, the "silent" carriage of the bacteria on the animals (colonization) took much longer to decline. This case highlights that stopping superbugs requires aggressive, early action and that hospitals must look for silent carriers, not just sick patients, to truly end an outbreak.