The Sanford school department is warning parents that there have been several cases of pertussis, or whooping cough, at the school.
District Superintendent David Theoharides says there have been four confirmed cases at Margaret Chase Smith primary school, and two at Sanford Junior High.
There is a vaccination for pertussis, and it's most common in school-aged kids. Theoharides says in most cases it's not severe for those kids. He says a bigger concern is when they bring it home to younger family members.