Infectious Diseases Research Center (IDRC) is a new research center founded by merging three older research centers namely Nosocomial Infection Research Center (NIRC), Liver Disease Research Center (LDRC), and Digestive and Liver Research Center (DLRC). NIRC started its activity at Imam Reza Hospital of Kermanshah province, west of Iran in the first half of 2012. LDRC started its activity in Hepatitis and liver disease clinics located at Imam Khomeini hospital of Kermanshah in 2003. Then in 2006, the research council of the university agreed with the approval of Hepatitis and liver disease clinics as a research center in the university. Finally, in 2014 its name was changed to LDRC. Coincidently, DLRC got its approval and started its activity in 2014. In order to improve the efficiency and synergy of activities of the research centers as well as promote faculty members' participation, merging of the three aforementioned research centers  was approved by the Commission on the Establishment of Research Units on July 4, 2018 and its name was changed to "Infectious Disease Research Center". Currently, the IDRC center is following its goals at Imam Reza Hospital in Kermanshah University of Medical Sciences, in west of Iran.