“It’s not clear how the ADA could make a statement that anti-virus should detect the malware, since presently only some of the many antivirus tools out there will flag the malware link as malicious.
In response to questions from this author, the ADA said the USB media was manufactured in China by a subcontractor of an ADA vendor, and that some 37,000 of the devices have been distributed. The not-for-profit ADA is the nation’s largest dental association, with more than 159,000 members.”
Source: Dental Assn Mails Malware to Members — Krebs on Security