Researchers in Leipzig, Germany, staged a 1,500-person experimental indoor concert to better understand how Covid-19 spreads at big events and how to prevent it. CNN’s Milena Veselinovic reports.
Researchers in Leipzig, Germany, staged a 1,500-person experimental indoor concert to better understand how Covid-19 spreads at big events and how to prevent it. CNN’s Milena Veselinovic reports.

