A warning has been issued by the HSE after five more cases of measles have been reported in Dublin, bringing the number of outbreaks to 11 so far.
The HSE have particularly issued concern about the risk of measles in children who attended Temple St Children's University Hospital between July 25 and 27, as well as Monday of this week.
The HSE are urging parents or their children who attended the Dublin hospital on any of these dates to be wary of symptoms, and to stay at home and contact their GP if they experience any.
Symptoms of measles include vomiting, diarrhoea, high fever, red eyes, runny nose, cough and in some instances stomach pain.
People suffering with measles may also develop a red/brown blotchy rash, which can start on the head and spread through the body for about 4-7 days.
The risk of measles runs up to three weeks after being in contact with a case.
Adults can be at risk of measles as well as children, especially anyone aged under 40 who has never had the illness before or a vaccine against it.
Dr Helena Murray, Specialist in Public Health Medicine said: "Measles can be a serious illness and is highly infectious. The best protection is to be fully vaccinated with two doses of MMR (Measles, Mumps, and Rubella) vaccine."