On 31 May 2013, the World Health Organization announced that it had decided to "prequalify" the PrePex device for performing adult male circumcision, concluding after a review process that the device met international standards. This update announces the prequalification and the conclusion that the device is efficacious and safe for use among healthy men 18 years and older when used by appropriately trained and competent physicians and mid-level providers in settings where the necessary surgical backup facilities and skills are available.