However the HSE has refused to disclose what did cause the death of 44-year-old Dessie Quinn or to say whether it was a matter for public health concern.
“It is a matter for the coroner’s office to certify the cause of death,” a HSE spokeswoman said.
Concerns about the nature of the virus which lead to the death of Mr Quinn arose when he was found dead at his home outside Mountcharles, Co Donegal, on Thursday morning.
He had been working in Sierra Leone, where almost 500 people have died in an ebola outbreak, but had returned to Ireland a fortnight ago.
Laboratory tests proved negative for the virus and his family were informed yesterday. They had already said they did not believe Mr Quinn had the disease.
He had been treated for malaria in Sierra Leone where he worked for Clondalkin-based cable-laying company KN Network Services.
Mr Quinn’s former employer issued a statement yesterday extending sympathies to his family and paying tribute to the father-of-one.
“Dessie was an extremely hard working and valued member of staff who was very popular with all his colleagues and he will be missed by everybody who worked with him,” the statement said.
There was criticism from some members of Mr Quinn’s family yesterday who said they did not receive medical advice ahead of the HSE warning on Thursday that it was treating the death as a potential ebola case.
Speaking on RTÉ radio, Catholic Curate Dr Adrian Gavigan said it was “poor form” that some members of the Quinn family learned of the alert on TV.
However, the HSE said it was in contact with certain family members “from the outset”.
Yesterday Facebook removed a page purporting to be that of Dessie Quinn carrying a link claiming to be a video the deceased made “15 minutes before he died”. However clicking on the video linked the user to a petition asking for support to free American journalist Steven Sotloff, held hostage by ISIS. Clicking on the petition linked to a porn site.
The page was been taken down because it violated Facebook’s Statement of Rights and Responsibilities which includes an account registered under a fake name or false identity.
Mr Quinn spent a lot of his time in Dublin where his young son lives when he wasn’t working abroad.
He had returned to his native Mountcharles to be close to his large extended family as he fought the illness that struck him down for the past two weeks.