For those hoping to re-join choirs or sing in religious services, Echternach and his colleagues have some further advice – keep a distance of at least 2.5m (8ft) apart at the front and 1.5m (5ft) on either side when singing. Sticking to well-ventilated rooms is also important, Echternach adds.
While the findings could equally be applied to other settings, his concern about singing is well placed.
One infamous case of Covid-19 superspreading occurred during a two-and-a-half-hour-long choir practice of the Skagit Valley Chorale in Mount Vernon, Washington. Fifty-three of the 61 choir members who attended the rehearsal later fell ill and were confirmed or suspected to have Covid-19. Two of the group later died. It is thought a single member of the choir who had developed “cold-like symptoms” a couple of days before the rehearsal may have been responsible for the spread.
“It is very bad as it has brought some very bad connotations to singing,” says Echternach. “It is a shame because singing is very good for our health and mental wellbeing.”
For Kersten Rosenfeldt and her fellow singers at the Bavarian Radio Chorus, any information about how to stay safe from the virus is welcome. “There is a great thirst for knowledge on this issue,” says Susanne Vongries, manager of the choir.
Like the rest of the world, they are now waiting to see just how the pandemic plays out.
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