Any viral agent that's not a computer virus needs a decent growth medium to stay living. the GP2X containers are sealed while bone dry in Korea. So the only way would be if there was some sort of sea water contamination from the air moisture, but that is why most overseas shipping by boat, air or whatever has EACH package include a little package that says "DO NOT EAT" printed on it.
That is Silica gel, a very effective drying agent for things like air moisture, sea air, etc. So even if the shipment were exposed to even excessive moisture after it was sealed bone dry in Korea, the moisture really woulnd't affect the inside of the GP2X package, itself. I keep a package of silica gel inside my computer so when I leave the window open at night and the computer case is closed, it helps absorb any moisture that might happen to head in the back of the computer.
You'll often find Silica Gel in Stereo component cases, boxes of shoes, DVD players, televisions, even PS2s, I think. (Moisture from sea air can corrode electrical circuits and wires, even ruin shoes and fabrics)
So kept completely dry for days and weeks, it is almost IMPOSSIBLE for any viral agent to survive. If you still have any doubts, log onto the US center for disease control, and look up Avian Flu or Asian Flu or even Dengei (Sp?) Fever. Sure you can find all the info you need there.