After national lockdown in the effort to defeat the COVID-19 outbreak, the gradual reopening of Italy was accompanied by a series of measures to limit the infection, including extensive epidemiological surveillance by means of antibody testing on selected risk groups.1 The Regional Council of Lombardy Region (Northern Italy), one of the areas most affected by COVID-19 on a global scale, initially authorized DiaSorin as the only provider of SARS-CoV-2 serologic test for diagnostic and epidemiological purposes. The use of a single test allowed comparisons among results and the harmonization o…Continua su epiprev.it