Fifteen people have tested positive for Covid-19 after attending DCMS pilot events.
Nine events attracted nearly 60,000 attendees so the rate of infection is similar to the UK at large (about 22 cases per 100,000 people at the time of writing).
This would appear to indicate that mass events with testing and other mitigations in place can avoid becoming 'super spreaders', although they are not without risk.
A Government spokesperson said the Events Research Programme had been "designed in a scientifically controlled way to reduce the risk of transmission for attendees".
"We are working closely with NHS Test and Trace to ensure everyone can be traced following a positive test."