BALTIMORE (WJZ) — Deadly diseases, once nearly wiped out, are making a frightening comeback in Maryland and across the country. Now — a warning that parents who don’t vaccinate their children are putting others at risk. Linh Bui explores an alarming and controversial trend. Measles, mumps, whooping cough — all deadly diseases. Until recently — virtually eliminated thanks to vaccines that prevent kids from getting sick. But now doctors see an alarming trend — more and more people are coming down with these diseases. “Kids die from measles on a regular basis. Kids are in hospitals and can die from...