Although some of the reported cases were not confirmed by lab tests, Nevada County’s Public Health Department stands by its report that stated last week at least 11 students have been infected with whooping cough in schools from Nevada City to South County. A letter has been sent out countywide to school administrators that the outbreak is widespread, as incidents have been reported from Seven Hills, Magnolia, Union Hill, Nevada Union, Yuba River Charter, Nevada City School of the Arts and Bitney College Prep schools. A 12th case was reportedly found with a preschool student. “Because it is so widespread, …