The Centres for Disease Control has published a guide on Disinfection and Sterilization in Healthcare Facilities. It covers information on:

Cleaning:

http://www.cdc.gov/hicpac/Disinfection_Sterilization/5_0cleaning.html

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Disinfection:

http://www.cdc.gov/hicpac/Disinfection_Sterilization/6_0disinfection.html

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Sterilisation:

http://www.cdc.gov/hicpac/Disinfection_Sterilization/13_0Sterilization.html

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Factors Affecting The Efficacy Of Disinfection And Sterilization:

http://www.cdc.gov/hicpac/Disinfection_Sterilization/4_0efficacyDS.html