Beware the little hedgehog, he’s likely to be prickly. So touch him at your peril: He just might make you sickly. The federal Centers for Disease Control and Prevention says in the past year—from December 2011 to December 2012—at least 20 people have been sickened with human salmonella typhimurium infections linked to hedgehogs purchased from multiple breeders in different states. Four people required hospital treatment, and one person died. Almost half of the victims are children age 10 or younger. …