May private sector partners or contractors of HHS components use the HHS logo on their publications or other communication products?

“Seals and devices of the Federal Government, Departments, Bureaus, and Independent Agencies are not in the public domain, and cannot be used for other than official business without specific authorization of the agency involved.” [Joint Committee on Printing, Congress of the United States]

The HHS Seal and Logo are for the official use of the U.S. Department of Health and Human Services and not for the use of the private sector.  To the public such usage would send a message that the U.S. Department of Health and Human Services favors or endorses an organization, its activities, its products, its services, and/or its personnel (either overtly or tacitly) —  which, of course, it does not and cannot do.