Blandford Children’s Centre in Black Lane was closed after three children who had visited it suffered from a rare strain of E coli.
A spokesperson for Dorset County Council confirmed that it was still closed and they had no information on when it might reopen.
The E coli outbreak has affected 11 people who are either all resident in Dorset or had visited the area since July. Blandford Children’s Centre was closed for three days in October after a child who attended it was diagnosed with the 055 E coli strain.
No evidence of a direct link between the nursery and the cases has been found but Dorset County Council opted to close the center voluntarily while they waited for the results of tests on staff and children.
Lawyers said the 10 people who had been infected since July had a right to expect answers from Public Health England (PHE).