This data set contains contact matrices and population data for 176 geographical regions.
The contact matrices uses data provided by the contactdata package while the population
data is provided by the US Census Bureau.
Source
U.S. Census Bureau. (n.d.). International Database: World Population Estimates and Projections. U.S. Department of Commerce. Retrieved November 24, 2023, from https://data.census.gov/
Gruson H (2023). "contactdata: Social Contact Matrices for 152 Countries." R package version 1.0.0, https://CRAN.R-project.org/package=contactdata.
Prem K, Cook AR, Jit M (2017). "Projecting social contact matrices in 152 countries using contact surveys and demographic data." PLoS Computational Biology, 13(9), e1005697. doi:10.1371/journal.pcbi.1005697 https://doi.org/10.1371/journal.pcbi.1005697.
Prem K, van Zandvoort K, Klepac P, Eggo RM, Davies NG, Group CCW, Cook AR, Jit M (2021). "Projecting contact matrices in 177 geographical regions: An update and comparison with empirical data for the COVID-19 era." PLoS Computational Biology, 17(7), e1009098. doi:10.1371/journal.pcbi.1009098 https://doi.org/10.1371/journal.pcbi.1009098.
Details
The contact matrices are provided for each of the four arenas: "Work", "Home", "School", "Other" in 5-year age groups.
The diseasy SEIR models are configured to use a specific transformation of the contact matrices.
To make the definition of "contact" matrix more clear, lets start with the definitions from this paper:
https://www.medrxiv.org/content/10.1101/2020.02.16.20023754v2.full.pdf
m_ij the raw contact matrix elements from age group i to age group j
c_ij the reciprocal contact matrix elements
w_i the proportion of population that fall into age group i
The diseasy SEIR models are configured to use a symmetric, weighted set of
contacts matrices where the elements are 0.5 * (c_ij * w_j + c_ji * w_i)
Since the contactdata package gives the number of contacts directly (in their
framework, denoted as X_ij), we transform to the above elements through these intermediaries:
m_ij = X_ij / w_j
c_ij = m_ij * w_i = X_ij * w_i / w_j
The population data includes the proportion of the population in these 5-year age groups as well as information of 1-year age-groups to allow transformation of the contact matrices into other age cuts.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.