Cerami C, Popkin-Hall ZR, Rapp T, Tompkins K, et al. Household transmission of SARS-CoV-2 in the United States: living density, viral
load, and disproportionate impact on communities of color. Clin Infect Dis 2021 Aug 12. pii: 6349288. doi: 10.1093.
PMID: 34383889