It's the first US case of 2013
                                
                                
                                    (Newser) -
                                    Not long ago, authorities detected plague in a  California squirrel ; now, New Mexico is home to the country's first human case of 2013. Typically, about seven Americans get the bacterial illness each year, and in this first instance, the afflicted is a 15-year-old boy. People usually contract it via...