The university town of Lund began spreading chicken droppings in its central park to put off would-be revellers who would usually come on Apr 30 to celebrate Walpurgis Night.
The occasion, marking the shift away from dark, chilly winter days towards brighter spring and summer days, is typically celebrated with picnics, parties and bonfires across the country, and regularly attracts thousands of students.
"This is a park where usually 30,000 people gather, but with COVID-19 this is now unthinkable," the town's mayor, Philip Sandberg, told Reuters. "We don't want Lund to become an epicentre for the spread of the disease."
Sweden has taken a softer approach than many other countries to preventing the spread of the respiratory disease that the coronavirus can cause, asking rather than ordering people to maintain social distancing.
In line with this policy, authorities have requested people avoid gathering for this year's Walpurgis Night, but have not banned festivities.