The articles say viruses reside in the FIRMWARE of the USB (stick, mouse, keyboard, etc)  
None mention SD cards.

CanaryInTheMine:  How do u know SD cards have the same problem?

links:
http://nakedsecurity.sophos.com/2014/08/02/badusb-what-if-you-could-never-trust-a-usb-device-again/

http://www.wired.com/2014/07/usb-security/