Discussion
A higher number of tests/positive test results ratio, reflecting a more aggressive screening strategy for SARS-Cov-2, was associated with lower rates of death and severe disease in Regions of Italy. Although the association was maintained after adjusting for some confounders, the possibility of other unaccounted confounders cannot be excluded. Moreover, results are specific for the time range considered. Despite these limitations, this association should be considered by policy-makers in other Countries faced by the threat of the epidemic.