Rh. Schiappacasse et al., CONTAMINATED COLLECTION MEDIA AS A CAUSE OF PSEUDOINFECTION, Infection control and hospital epidemiology, 15(12), 1994, pp. 760-762
Following the appearance of positive Gram's stains from sterile surgic
al cases, an investigation was begun. Nonviable but stainable bacteria
were found in the gel-based transport media. The use of a cause-and-e
ffect diagram helped to show the numerous items that affected the prob
lem.