id author title date pages extension mime words sentences flesch summary cache txt cord-258818-ys3ezzzz Galea, Sandro Understanding the Covid-19 pandemic through the lens of population health science 2020-07-15 .txt text/plain 3320 147 49 While this pandemic was novel in 2020, its population health footprint was established long before the novel coronavirus crossed over into humans, following causes that are influenced by causes at multiple levels of influence, from national and state policies, to local conditions of exposure, to forces that shape risk of other diseases that in turn predispose populations to Covid-19 infection and its consequences. 8 This suggests that age interacts with the other causes of infection (exposure risks due to physical contact for example) as well as with other causes of morbidity (underlying diabetes or heart disease for example) to be a factor as important as the virus itself in determining the scale and consequences of the Covid-19 pandemic. 10 This reflects, rather simply, the central importance of age as an important, even if insufficient, covariate (i.e., age by itself, without SARS-CoV-2 infection does not result in Covid-19), one that changes our understanding of the disease through its intimate interaction with the key exposure, and should accordingly inform our public health action. ./cache/cord-258818-ys3ezzzz.txt ./txt/cord-258818-ys3ezzzz.txt