One of the cultures turned up Staphylococcus aureus, a nasty pathogen that's responsible for skin infections and other illnesses. Another showed less-virulent yeast and bacterial contamination.
Apple insists that it keeps the iPads clean and that the stores are a healthy environment... but perhaps a small dispenser of antibacterial wipes would be in order. In the meantime, before and after playing with those iPads -- wash your hands!
Note: As commenters have pointed out, the Daily News neglected to sample other commonly-touched items like subway railings and doorhandles -- chances are they would have found similar bugs in those places, too.