Coronavirus (COVID-19) Collection
Seroprevalence of infection-induced SARS-CoV-2 antibodies among health care users of Northern Italy: results from two serosurveys (October-November 2019 and September-October 2021)
COVID-19, caused by SARS-CoV-2, was declared a public health emergency of international concern on January 30, 2020. As of June 12, 2022, there have been 533,160,628 confirmed cases worldwide, including over 6 million deaths (WHO, 2022).
