Abstract
BackgroundSARS-CoV-2 transmission risk generally increases with the proximity of those shedding the virus to those susceptible to infection. Thus, this risk is a function of both the number of people and the area they occupy. However, the latter continues to evade the COVID-19 testing policy.ObjectiveThe aim of this study is to analyze per capita COVID-19 testing data reported for Alabama to evaluate whether testing realignment along population density, rather than density agnostic per capita, would be more effective.MethodsDescriptive statistical analyses were performed for population, density, COVID-19 tests administered, and positive cases for all 67 Alabama counties.ResultsTests reported per capita appeared to suggest widespread statewide testing. However, there was little correlation (r=0.28, P=.02) between tests per capita and the number of cases. In terms of population density, new cases were higher in areas with a higher population density, despite relatively lower test rates as a function of density.ConclusionsIncreased testing in areas with lower population density has the potential to induce a false sense of security even as cases continue to rise sharply overall.
Highlights
COVID-19 testing is typically measured per capita; tests and cases are reported per million globally while local authorities report counts per 100,000 people [1,2,3]
Tests reported per capita appeared to suggest widespread statewide testing
In terms of population density, new cases were higher in areas with a higher population density, despite relatively lower test rates as a function of density
Summary
COVID-19 testing is typically measured per capita; tests and cases are reported per million globally while local authorities report counts per 100,000 people [1,2,3]. This approach is simple and generally well accepted both in economic spheres and in health care research. SARS-CoV-2 transmission risk generally increases with the proximity of those shedding the virus to those susceptible to infection. This risk is a function of both the number of people and the area they occupy. The latter continues to evade the COVID-19 testing policy
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