Twenty-one people have tested positive for coronavirus at a caravan park site in Shropshire, with health experts warning the number will rise.
All residents have been told to self-isolate with their families.
To date 41 people have been tested, and all contact tracing is being undertaken as the number of positive cases will increase before infection control measures and social distancing start to take effect, the council said.
People who were in contact with a positive case were told to isolate for 14 days, the council said.
A playground and outdoor gym on nearby Newington Way has been temporarily closed to help stop transmission, and the council said it had been arranging the delivery of food, prescriptions and essential supplies for residents.
David Evans, councillor for Church Stretton and Craven Arms, said teams were working with the NHS, Public Health England, police and other key agencies to provide advice and support to the local community.
“I would like to thank members of the community for their own ongoing support and co-operation,” he said.
“We continue to rely on everyone at the site playing their part, and want to encourage the residents to continue to self-isolate and take all the necessary precautions.
“This is the only way we can help stop the spread of the virus.”
Officials will monitor people’s symptoms on a daily basis, and PPE equipment, hand sanitisers and cleaning products have also been distributed on site.