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Of endoscopes in a 2019 study had reprocessing steps skipped or done incorrectly1

19 out of 20

Endoscopes in a 2016 study had multiple fluid droplets inside ports and channel2

S. maltophilia

An environmental bacterium was introduced to endoscopes via rinse water used in reprocessing in a 2016 study3

Watch the short video to learn more of the ground-breaking research study about the Hidden Points of Failure in Endoscope Reprocessing


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  1. Ofstead CL., Hopkins KM., Buro BL., Eiland JE., Wetzler HP., Challenges in achieving effective high-level disinfection in endoscope reprocessing. Am J Infect Control 2019;000:1-7. Research funded by ASP.

  2. Ofstead CL, Wetzler HP, Johnson EA, Heymann OL, Maust TJ, Shaw MJ. Simethicone residue remains inside gastrointestinal endoscopes despite reprocessing. Am J Infect Control 2016;44:1237-40.

  3. Ofstead CL, Doyle EM, Eiland JE, Amelang MR, Wetzler HP, England DM, et al. Practical toolkit for monitoring endoscope reprocessing effectiveness: Identification of viable bacteria on gastroscopes, colonoscopes, and bronchoscopes. Am J Infect Control 2016;44:815-9.