No new cases recorded after controlled gig in Spain that allowed singing and dancing with no social distancing

CoronavirusNo new cases recorded after controlled event in Spain that allowed singing and dancing with no social distancing
Thu 27 May 2021 23.30 BST
Early evidence suggests indoor music events can take place without increasing the risk of coronavirus transmission.
The first randomised controlled trial to assess the impact of comprehensive Covid-19 safety measures at a live indoor concert, held in Spain, reported no cases of virus transmission.
Safety precautions included enhanced ventilation and crowd control, while attendees were required to take same-day lateral flow tests before entry and wear a N95 mask at the event.
But there was no requirement for social distancing, and participants were allowed to sing and dance at the event.
The study was conducted in Barcelona on 12 December last year, when the prevalence of coronavirus infections in the region was low to intermediate (221 cases among every 100,000 people).
Volunteers were told that mask-wearing was mandatory. Photograph: Emilio Morenatti/AP
Researchers noted that the number of new infections resulting from the event would therefore have been expected to be low.
At the time, local travel restrictions were in place, indoor meetings were limited to six people and Covid-19 vaccines were not yet available.
The studys lead author, Dr Josep Llibre, of the Germans Trias i Pujol university hospital in Spain, said: Our study provides early evidence that indoor music events can take place without raising the risk of Sars-CoV-2 transmission when comprehensive safety measures are in place, but it is important that our findings are considered in light of the situation in Spain at the time when cases were not high and many restrictions were in place.
As a result, our study does not necessarily mean that all mass events are safe. The conditions of the pandemic are constantly shifting.
Widespread vaccination campaigns, changes in local incidence and the emergence of Sars-CoV-2 variants with higher transmissibility could all impact the interventions we tested, so we need more studies including larger numbers of people that explore different scenarios and policies that take into consideration the local context.
Everyone admitted to the event were first given a Covid test. Photograph: Emilio Morenatti/AP
In the UK, spectators have attended a series of scientific pilot events as part of the governments Events Research Programme.
This has included crowds at a number of sporting events and indoor music events.
Experts will use the results from these pilots to help inform the governments plan to safely allow big crowds to gather again this summer.
In the study, published in the Lancet Infectious Diseases journal, researchers carried out a controlled experiment to see if mass testing on entry using lateral flow tests, alongside other preventive measures aimed at blocking transmission, could be successfully carried out.
About 1,000 people aged between 18 and 59 took part in the study.
Those who had tested positive for the virus or been in contact with a positive case in the previous two weeks, or had pre-existing health conditions that are known risk factors for severe Covid-19, or were living with older people at the time of the study, were excluded.
Around half (465) were randomly selected to attend the event, while the rest (495) were asked to return home.
Nearly 1,000 volunteers queued for the event, but about half were selected for the control group and sent home. Photograph: Emilio Morenatti/AP
All participants, including those who did not attend the event, were visited by a healthcare professional eight days after the event for collection of a second swab from the back of the nose and throat for another test.
The event lasted five hours and audience members spent an average of two hours and 40 minutes inside the venue.
Everyone who took part in the study was required to download two smartphone apps: a contact-tracing app to capture the close contacts of people who may have become infected during the concert; and another to receive confidential test results.
The second app was used to complete health questionnaires before and 10 days after the event, as well as a satisfaction survey.
None of the people who attended tested positive for the virus eight days after the event, compared with two people from the control group.
The authors noted that the comprehensive safety measures in place during their event may be cost-prohibitive for some venues.
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