On May 30, 2017, Chembio Diagnostics, Inc. announced that John J. Sperzel III, the Chief Executive Officer of the company, is taking a medical leave of absence. In connection with Mr. Sperzel's leave of absence, on May 30, 2017, the company board of directors appointed Sharon Klugewicz, the company's President Americas Region, and former Chief Operating Officer, as acting Chief Executive Officer. Ms. Klugewicz joined company in 2012. She served as President Americas Region beginning in 2016, after having served as Chief Operating Officer and as Vice President Of QA/QC.