There are calls for greater awareness after a baby girl died from the cold sore virus in December 2015.
The Coroners Court has recorded a verdict of "death due to a healthcare acquired infection" for 12-day-old Eibhlin Wills.
Her parents, John and Louise, have called for neonatal herpes to become a notifiable disease.
Coroner Dr Myra Cullinane has made the recommendation and will bring it to the attention of the Health Minister.
John Wills said: "For the past three years we have had to live with the unspeakable horror of losing our baby girl to an entirely preventable disease.
"While it has been extremely painful to go through the details again, we thank Coroner Dr Myra Cullinane for her thorough and professional approach.
"Today's verdict gives us the opportunity to again warn the public, and especially the families of newborns and those caring for them, of the potential danger of the common cold sore virus."
Louise said she and John were 'in total shock' when they realised that such a common virus as a cold sore caused their daughter's death.
"In Eibhlín's legacy we now want to ensure the general public is aware how lethal a cold sore can be to a new born baby", she said.
They've created a website in their daughter's memory - which includes background detail, preventive information and public policy improvements they're asking the public to support.