Folgende Studie liefert einiges zum Thema: „Forecast and control of epidemics in a globalized world“ L. Hufnagel, D. Brockmann, and T. Geisel https://www.pnas.org/content/101/42/15124
PNAS October 19, 2004 101 (42) 15124-15129; https://doi.org/10.1073/pnas.030834410