Analysis of an indoor concert staged by scientists in August suggests that the impact of such events on the spread of the coronavirus is “low to very low” as long as organizers ensure adequate ventilation, strict hygiene protocols and limited capacity, according to the German researchers who conducted the study.

“There is no argument for not having such a concert,” Dr. Michael Gekle, part of the team at Martin Luther University Halle-Wittenberg who conducted the study, said in an interview. “The risk of getting infected is very low.”…

The test event, one of the first close examinations of how a virus might be transmitted among a crowd at an indoor venue, was closely watched in the global entertainment industry, which has been hampered by lockdown restrictions in most countries since the pandemic broke out early this year.