SD Card has a trojan?

I believe my sd card has been infected with a trojan according to symantec. So in computer, it recognizes the card but when opened only has the shortcuts for folders not the actual photos. In properties it says that there are so many gigs used/not, so the photos are there but aren't showing up on the computer.

So is there anyway to remove the virus in a way that won't delete any of the pics???

Thanks alot.