CDC Guidelines Surgical Site, 1999: Environment 2003 Resources CDC Guidelines Surgical Site, 1999: http://www.cdc.gov/ncidod/dhqp/pdf/guidelines/SSI.pdf Environment 2003 http://www.cdc.gov/ncidod/dhqp/pdf/guidelines/Enviro_guide_03.pdf Disinfection & Sterilization, 2008 http://www.cdc.gov/ncidod/dhqp/pdf/guidelines/Disinfection_Nov_2008.pdf Other sites: www.Disinfectionandsterilization.org www.AIA.org www.apic.org While the 1999 SSI guidelines include information on ORs, the 2003 Environmental Guideline is aimed not just at hospitals, but healthcare settings and has updated information.