Tang, W., S. Wang, L. Xiong, M. Fang, C.- yang Chiu, C. Loffredo, and R. Fan. “A Comparison Study of COVID-19 Outbreaks in the United States Between States With Republican and Democratic Governors”. International Journal of Infection Control, vol. 17, no. 1, Sept. 2021, doi:10.3396/ijic.v17.20940.