The effect of travel restrictions on the spread of the 2019 novel coronavirus (COVID-19) outbreak

April 1, 2020

https://science.sciencemag.org/content/early/2020/03/05/science.aba9757

The effect of travel restrictions on the spread of the 2019 novel coronavirus (COVID-19) outbreak

Matteo Chinazzi1, Jessica T. Davis1, Marco Ajelli2, Corrado
Gioannini3, Maria Litvinova3, Stefano Merler2, Ana Pastore y Piontti1, Kunpeng Mu1, Luca Rossi3, Kaiyuan Sun4, Cécile Viboud4, Xinyue Xiong1, Hongjie Yu5, M. Elizabeth Halloran6,7, Ira M. Longini Jr.8,*, Alessandro Vespignani1,3,*

https://www.nytimes.com/2020/03/13/science/coronavirus-social-networks-data.html