The Centers for Disease Control and Prevention (CDC)…is developing a standards-based solution for transmission of health care-associated infection (HAI) data from existing commercial software systems to the agency’s National Healthcare Safety Network (NHSN). … CDC’s pilot project of the new solution in July and August, 2007 was the first field test of the Health Level Seven Clinical Document Architecture Release 2 (HL7 CDA R2) for public health reporting purposes.