Scanning the viruses in the USB Drives are very easy if you have installed an antivirus program in any windows OS. For the non IT personals the recovery of the hidden files due to most of the virus are tedious. It is rally easier to fix the problem using attrib command.
Use the following details
Command: attrib -s -h /s /d *.*
What is attrib?
What parameters are
*.*: All Files and Folders
Open the USB Drive and Enjoy browsing your files and folders.