Those who may be affected are individuals in Kalmar County who are connected to the system with dose-packaged medicines, Apodos, if they have received changed medication dosing during the period from 19 to 22 October, the region writes on its website.
A few incidents have been reported, but it is unclear how many are affected.
Since Wednesday, the error has been temporarily rectified and there is no longer any risk of confusion, the region writes. The incident has been reported to the Swedish Authority for Privacy Protection.
