COVID-19 in Vietnam
Social distancing response to COVID-19 in Vietnam in 2020. Colocation data from Facebook allow to compute the matrix of contact between all the 700 districts of Vietnam (left). The spatial structure of these contact is shown on the map in the middle. The 2 graphs on the right show the strength and the clustering statistics of the network of districts in Vietnam throughout 2020, showing particularly well the effect of the 3-week national lockdown in April and the quick response to the Danang outbreak in August.