Bolton NHS Foundation Trust has launched an internal investigation after the school nursing team lost the list with details of 425 children.
It took place as the school nursing service transferred records of children moving from primary to secondary school.
To make sure school nursing care continues efficiently, the trust receives a document listing pupils in each class.
They have also written to the parents and guardians of the young people named on the list to explain what has happened.
Source: https://www.bbc.com/news/uk-england-manchester-49945121
"id": "BOL3417423",
"linkid": "royal-bolton-hospitals-nhs-foundation-trust",
"type": "Data Leak",
"date": "10/2019",
"severity": "50",
"impact": "1",
"explanation": "Attack without any consequences"