With feedback from LTCF Vendors and CDC, this project will develop, a setting specific implementation guide (IG): - HL7 Implementation Guide for CDA® Release 2: NHSN Healthcare Associated Infection (HAI) Reports for Antimicrobial Use (AU) reporting from Long Term Care Facilities (HAI-AU-LTCF-CDA) This IG will support electronic submission of HAI data to the National Healthcare Safety Network (NHSN). The intent of this project is to establish an electronic submission standard that is vendor-neutral that leverages LTCF existing workflows and eliminates duplicate documentation. This project will work with LTCF EHR vendors to identify data elements for use in the NHSN HAI surveillance definition.