CPO/CPE stands for Carbapenemase Producing Organism/ Carbapenemase Producing Enterobacteriaceae. This is a group of bacteria, e.g. E. coli, Klebsiella and Enterobacter, which are very resistant to antibiotics (including antibiotics called Carbapenems). These bacteria normally live harmlessly in the bowel, however if they get into another area such as the bladder or bloodstream they can cause infection.
Infection caused by a CPO/CPE can be difficult to treat as these bacteria can produce enzymes (proteins/chemicals) which destroy most of the available antibiotics. Carbapenem antibiotics are a powerful group of antibiotics that can only be given in hospital directly into the bloodstream.
Carbapenem-resistant organisms (CROs) are a group of organisms (bacteria) that have become resistant to more than 10 antibiotics in a class of antibiotics called carbapenems. CPOs are CROs that make an extra enzyme (carbapenemase) that make it easier to spread in healthcare settings and even harder to treat than some CROs that don’t make the special enzyme.
