The small measles outbreak that health officials are combating in Michigan began last month with an unvaccinated young woman returning home from visiting Florida, a state where there have been more than 140 cases this year. Her first symptoms around March 7 seemed like a cold. By the time the telltale measles rash appeared a few days later, she had exposed her family and scores of other people in public settings, according to health officials in Washtenaw County, near Detroit . The Michigan