Need to recover corrupted data
My sister plugged her usb drive on several infected windows computers, and then she gave it to me. It had 4 virus, so I cleaned it by terminal. She's using Ubuntu too, so this is the weird part, in only half an hour her drive got infected again with 2 different virus than the ones I deleted and now all her data is corrupted. Is this normal? What just happened here? Can we recover the files?
Lenovo Ideapad Y530
Intel Core 2 Duo T5800 @ 2.00GHz
4 GB PC3-8500 DDR3 SDRAM 1066MHz
Intel Integrated Graphics X4500