Chief Medical Officer Tony Holohan says he's satisfied that enough information about each new case of coronavirus is being made public.
Six more cases of coronavirus have been identified on the island of Ireland, bringing the total to 22.
Five are in the Republic and one is in Northern Ireland.
The Republic's cases are in the east, west, and south of the country - and one involves a healthcare worker.
All are linked to travel abroad or were picked up from other confirmed cases.
He said officials are able to explain the transmission of all but one of the 18 cases diagnosed in the Republic.
"We are still early in the experience of this disease in this country," he said.
"We can reassure people that the contact tracing process, the case identification process is working well.
"The public health doctors who are at the front line of that are continuing to do good work in terms of both facilitating the identification of cases and supporting the clinical community in the diagnosis of those and in facilitating the contact tracing efforts that are underway."
He said authorities will not reveal further details about the locations of people who are diagnosed because they rely on people to come forward at an early stage if they develop symptoms.
“We are clear that unless we can give a guarantee that we will do everything we can to preserve the anonymity, the confidentiality and the privacy of those individuals, they will be less likely to come forward and to feel secure in reporting and that will be a challenge for our containment policies and procedures.
“So we are giving people the greatest assurance we can that we will protect their confidentiality and their privacy and we will continue to do that.”
