Covid-19 infections have doubled at a nudist resort where 240 out of 800 guests have the virus.
The spike at the secluded French site comes after a rooftop party at a Cap d’Agde hotel.
Its boss has said there are no social distancing measures in place despite the pandemic.
The hotel sits on France’s Mediterranean coast, close to Montpellier. The site is the world’s largest naturalist resort and it is legal to be naked at all times.
Last week 95 guests tested positive for coronavirus and a further 50 were found to have the virus after returning home.
Those figures have almost doubled, with 30 per cent of guests testing positive, according to the BBC.
That puts the rate at four times higher than neighbouring southern areas.
The resort features a self-contained “village naturiste” complete with a dozen swinger clubs and saunas and also boasts erotic nightclubs.
Cap d’Agde says it is “one of the best resorts of its type in the world for sunbathing in the buff” and that attendee numbers can reach “50,000 at any one time”.
One swinger, who chose to remain anonymous, said they preferred that specific resort because of its sex clubs.
“We all know why we are here,” they told the BBC.
The spike in Covid-19 cases hit in late August and has since been traced to two employees at the luxury Hotel Oz’Inn.
An X-rated party was hosted on the hotel’s roof terrace without social distancing measures, its owner said.
One couple, aged in their sixties, admitted that they are cautious about getting too close to too many people given the pandemic.
They attributed the outbreak to younger people who are open to taking greater risks.
Village manager David Madella says that 40 per cent of his visitors are foreign.
He said that most come from the Netherlands and Germany, with Italy and Britain following in terms of numbers.
David reckons the population density of the village is seven times greater than that of Montpellier.
It has 10,000 campsite pitches with 15,000 beds offered at Cap d’Agde’s accommodation.
A Hérault Prefecture spokesman described the outbreak as “an alarming situation”.
He called on anyone planning to visit the village to postpone their trips in light of the spike.
Cap d’Agde – which is now in quarantine – announced that 17 establishments have closed in the village.