1. Travel and border health measures to prevent the international spread of Ebola.;Cohen;MMWR Suppl,2016
2. Centers for Disease Control and Prevention. Epidemiologic risk factors to consider when evaluating a person for exposure to Ebola, 2015 [cited 2017 Oct 5]. https://www.cdc.gov/vhf/ebola/exposure/risk-factors-when-evaluating-person-for-exposure.html
3. Centers for Disease Control and Prevention. Criteria for requesting federal travel restrictions for public health purposes, including for viral hemorrhagic fevers, 2015. 80 FR 1640:16400–2 [cited 2017 Oct 5]. https://www.federalregister.gov/articles/2015/03/27/2015-07118/criteria-for-requesting-federal-travel-restrictions-for-public-health-purposes-including-for-viral
4. Centers for Disease Control and Prevention. Federal Register notice: criteria for recommending federal travel restrictions for public health purposes, including for viral hemorrhagic fevers, 2015 [cited 2017 Jan 9]. https://www.cdc.gov/quarantine/criteria-for-recommending-federal-travel-restrictions.html
5. Federal air travel restrictions for public health purposes—United States, June 2007-May 2008.;Centers for Disease Control and Prevention (CDC);MMWR Morb Mortal Wkly Rep,2008