FDA Warning Letters For Olympus, Fujifilm, Pentax: Duodenoscope-Makers Fail To Meet Agency's Post-Market Surveillance Study Order

US FDA sent the letters to Olympus Corp., Fujifilm Medical Systems USA Inc. and Pentax Medical after the firms failed to meet obligations to conduct Sec. 522 post-market studies on their duodenoscopes, the use of which caused a number of antibiotic-resistant superbug infections in 2013 and 2014.