Every year, 1.35 million people in the U.S. get salmonella. Nearly 27,000 are hospitalized. Infections are more common in the summer, when more of us enjoy watermelon, cantaloupe, and honeydew melon. The vines grow on the ground, where the rinds can pick up germs. Their surface can be hard to sanitize. Pre-cut melon can pass on norovirus, listeria, and other harmful agents. Washed, whole melons are best. Refrigerate pre-cut fruits or pack them in ice.