First Step Get a Good Antivirus
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After Downloading and patching it through the guide given, Just update the antivirus and plugin your USB or removal disk, After that don't open it just right click the USB drive and go to Advanced Options>>Clean Files So that any virus may be removed.
Inorder to Recover Data from such an infected USB go to Start Menu and inAccessories go to Command Prompt after that use this command (Where j: is your USB path or it may be g: or something else depending on your system and partitions)
In CMD type this (don't forget to replace j: with your own USB drive path):
attrib -h -r -s /s /d j:\*.*
After that go to USB and open it by Right Clicking it and selecting open. You will see that along with shortcuts your Data is also recovered and thus after this delete all shortcuts.
Precautions When USB Drive in Infected
1) You must have Good Updated Antivurs installed in computer so that virus may not infect your computer.
2) Disable Autorun of the Windows so that the USB autorun virus may not execute and don't use this dialog box since it only appears when autorun is enabled.
3) Open USB drive by right clicking it and then open the USB from the options , So that autorun.inf may not execute.