Abstract: Original Article Med J Bakirkoy 2020;16(3):280-6 doi: 10.5222/BMJ.2020.50469 Medical Journal of Bakirkoy Hydroxychloroquine Use on Healthcare Workers Exposed to COVID-19 -A Pandemic Hospital Experience COVİD -19 Temas Öyküsü Olan Sağlık Çalışanlarında Hidroksiklorokin Kullanımı; Bir Pandemi Hastanesi Deneyimi Ozlem Polat1 , Ramazan Korkusuz2 , Murathan Berber3 ID ID ID University of Health Sciences, Bakırkoy, Dr. Sadi Konuk Training and Research Hospital, Department of Family Medicine, Istanbul, Turkey University of Health Sciences, Bakırkoy, Dr. Sadi Konuk Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey 3 University of Health Sciences, Bakırkoy, Dr. Sadi Konuk Training and Research Hospital, Employee Health Unit, Istanbul, Turkey 1 2 Received: 07.07.2020 / Accepted: 02.09.2020 / Published Online: 30.09.2020 Cite as: Polat O, Korkusuz R, Berber M. Hydroxychloroquine use on healthcare workers exposed to COVID-19 -A pandemic hospital experience. Med J Bakirkoy 2020;16(3):280-6. ABSTRACT Objective: As healthcare professionals play a role in combating the COVID-19 outbreak, the risk of disease exposure and illness increases. In our study, we aimed to measure the effectiveness of post-contact use in order to protect the healthcare professionals who work very intensively during the outbreak. Method: A total of 208 healthcare workers who applied to Employee Health Unit section between the dates 25 March-25 April 2020 with a history of contact with COVID-19 patients were included in the study. Employees were evaluated in low, moderate and high risk groups according to the Contact Risk Algorithm included in the Evaluation of Healthcare Workers Guidelines with COVID-19 theme. Three-day hydroxychloroquine treatment was initiated to 138 healthcare professionals who were considered as high risk. The treatment regimen was arranged as 2x400 mg on the first day and 2x200 mg on the 2nd and 3rd days. The COVID-19 positivity rates were analyzed according to the contact risk groups Results: There was a statistically significant difference between occupational groups according to contact risk groups (p<0.01); the rate of contact risk of nurses in the middle, and the doctors in the high risk groups was found to be significantly higher. When the COVID-19 positivity rates were analyzed according to the contact risk groups, the COVID-19 positivity rates were 9.4% in the high-, 16.3% in the moderate and 14.3% in the low-risk groups. The contact was found to be related to the COVID-19 test, and the positivity rate from contact with the patient was found to be significantly high (p<0.01). Conclusion: Recommendations about hydroxychloroquine for postexposure prophylaxis vary. Hydroxychloroquine can be a possible effective agent in postexposure prophylaxis. We think that conducting similar studies on larger samples can provide significant benefits to individuals and public health. Keywords: COVID-19, contact, healthcare workers, hydroxychloroquine ÖZ Amaç: Sağlık çalışanları COVID-19 salgını ile mücadelede rol aldıkça hastalığa maruz kalma ve hastalanma riskleri artmakta. Çalışmamızda salgın surecinde cok yoğun şekilde çalışan sağlık çalışanlarını korumak adına temas sonrası proflaksinin etkinliğini ölçmeyi amaçladık. Yöntem: Çalışan sağlığı birimine 25 Mart-25 Nisan 2020 tarihleri arasında COVID-19 hasta ile temas öyküsü ile başvuran 208 sağlık çalışanı çalışmaya dahil edildi. COVID-19 temasi..