The Clinical Director of Our Lady's Children's Hospital in Crumlin says authorities at the facility are hoping to make contact with the parents of the 3 remaining children involved in a contamination scare at the hospital.

Dr. Colm Costigan says a bug was found on a colonoscope that was used on 18 children between May 17th and July 5th.

An information pack and a sample kit to test for the bug is being sent to each of the affected families and the results will be returned immediately.

The problem came to light after a crack was found in a colonoscope that was used during procedures on children between May 17th and July 5th.

Tests carried out on the equipment showed the presence of a bug in a crack in the damaged scope.

The hospital says results will be returned immediately, and full support will be given to any family whose child tests positive.

Hospital managers have apologised for the incident while Dr. Costigan told Breakfast here on  Newstalk the children aren't at any immediate risk: