Ryu, S., Gao, H., Wong, J., et al. (2020). Nonpharmaceutical Measures for Pandemic Influenza in Nonhealthcare Settings—International Travel-Related Measures. Emerging Infectious Diseases. 26(5).
The authors completed systematic reviews of nonpharmaceutical interventions related to international travel and movement for evidence of effectiveness against pandemic influenza. Measures studied were screening travelers for infection, travel restrictions, and border closures.