How to fix the infected USB drive. only shortcut of content is visible

first of all allow your system to view each and every folder and file, including Hidden and system files also.

In second step delete all the files and shortcut present at the root of USB drive.
but remember not to delete the HIdden folder which have no name.

now in fixing process, you just cut all the content inside this Hidden folder (no name) and paste that content to the root of your USB.
that's it..

If some files are with system and hidden attributes than run this command.

attrib -s -h /s /d

That's , we done..