Projecting contact matrices in 177 geographical regions: An update and comparison with empirical data for the COVID-19 era. - Kiesha Prem; Kevin van Zandvoort; Petra Klepac; Rosalind M. Eggo; Nicholas G. Davies; Centre for the Mathematical Modelling of Infectious Diseases COVID-19 Working Group; Alex R. Cook; Mark Jit (PLoS Comput. Biol., 2021)