The Centers for Disease Control and Prevention and Department of Homeland Security this week modified port-of-entry screening for travelers from Sierra Leone, which the World Health Organization declared free of Ebola transmission on Nov. 7. Under the modified entry screening, travelers from Sierra Leone with no enhanced risk factors will receive information about Ebola, a thermometer and contact information for state and local health departments, but will no longer need to be actively monitored by or in daily contact with their health departments, CDC said.