Decreasing median age of COVID-19 cases in the United States-Changing epidemiology or changing surveillance?
Dina N GreeneMichael L JacksonDavid R HillyardJulio C DelgadoRobert L SchmidtPublished in: PloS one (2020)
We confirm that there is a trend toward decreasing age among persons with laboratory-confirmed SARS-CoV-2 infection, but that these trends seem to be specific to the outpatient population. Overall, this suggests that observed age-related trends are driven by changes in testing patterns rather than true changes in the epidemiology of SARS-CoV-2 infection. This calls for caution in interpretation of routine surveillance data until testing patterns stabilize.