Even if you buy captive bred stock from Petco and other stores, a loto fo the time these frogs are exposed to wild caught animals and pick up what they may be carrying. I have noticed at Petco and Petsmart that they don't always thoroughly clean cages in between occupants. If they do they never do it with a bleach and water soloution.
If your Whites is wild caught, it had to come from Indonesia or Florida or New Zealand. There are introduced populations in the last two locations. My guess that it is wild caught as captive bred animals rarely, if ever, have scars.