The Taoiseach and Health Minister were only made aware last night that the HSE is asking some people to carry out their own contact tracing.
A spokesperson for Stephen Donnelly says the decision was made by the HSE for 'operational reasons', adding that it was a temporary measure.
Thousands of positive cases from last weekend have been asked by the health service to inform their close contacts, due to pressure on the system.
There's a concern that some people may be too embarrassed to inform their close contacts that they're covid-19 positive.
Dr Denis McCauley from the Irish Medical Organisation says the measure means patients lose their anonymity: