The primary endpoint is the difference in SARS-CoV-2 infection between the two groups after 1 months and is a combined endpoint consisting of primary outcome components 1, 2 and/or 3:;The primary endpoint is the difference in SARS-CoV-2 infection between the two groups after 1 months and is a combined endpoint consisting of primary outcome components 1, 2 and/or 3:;The primary endpoint is the difference in SARS-CoV-2 infection between the two groups after 1 months and is a combined endpoint consisting of primary outcome components 1, 2 and/or 3:

The primary endpoint is the difference in SARS-CoV-2 infection between the two groups after 1 months and is a combined endpoint consisting of primary outcome components 1, 2 and/or 3:;The primary endpoint is the difference in SARS-CoV-2 infection between the two groups after 1 months and is a combined endpoint consisting of primary outcome components 1, 2 and/or 3:;The primary endpoint is the difference in SARS-CoV-2 infection between the two groups after 1 months and is a combined endpoint consisting of primary outcome components 1, 2 and/or 3: