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. 2021 Jan 14;16(1):e0245055. doi: 10.1371/journal.pone.0245055

Fig 2. COVID-19 infection and death in matched high and low elevation counties.

Fig 2

A) Mean COVID-19 cumulative per capita incidence per 100,000 population B) and lack of correlation with population density. C) Mean COVID-19 cumulative per capita death per 100,000 population D) positively correlated with population density at both high- and low-elevation counties. E) COVID-19 case mortality in high and low elevation counties of similar population density. N = 58 for both high elevation and low elevation counties. *p<0.05 by one-sided t-test.