Amy Maxmen | (TNS) KFF Health News Keith Poulsen’s jaw dropped when farmers showed him images on their cellphones at the World Dairy Expo in Wisconsin in October. A livestock veterinarian at the University of Wisconsin, Poulsen had seen sick cows before, with their noses dripping and udders slack. Related Articles Health | How to kick back, relax and embrace a less-than-perfect holiday Health | New childhood leukemia protocol is ‘tremendous win’ Health | For some FSA dollars, it’s use it or lose it at year’s end Health | Norovirus is rampant.