NEW HAMPSHIRE: Concord’s Holly Ramer and New York City’s David Caruso traced the work history of a medical technician fired from his job in New Hampshire after being accused of infecting at least 30 patients with hepatitis C. They learned that a broken system had allowed a man who had been repeatedly fired to keep getting jobs in 18 hospitals in eight states, despite allegations that he used dirty needles on patients and came to work with drugs in his system.