Measles outbreaks in Florida and Philadelphia have come as parents defied advice to quarantine their children and at least one high-profile state official sowed confusion about how long to keep unvaccinated children out of school.
Both the outbreaks in Broward county, Florida, and Philadelphia made news after children brought the disease into the wider community. Six children grew sick at Manatee Bay elementary in Florida, and nine in Philadelphia after a child went to a daycare while infected.