According to French health officials dozens of medical personnel who took care of a French nurse while she was being treated for the Ebola virus disease have finished their observation period and are free of the virus. French Health Minister Marisol Touraine told a television channel that the 70 healthcare workers ended their quarantine last weekend and had been declared disease free. (Read: What is the Ebola incubation period?) The nurse worked for Doctors Without Borders and contracted Ebola in Liberia. After she showed symptoms of the virus in September she tested positive and was treated at a hospital on