The HSE has reported a sharp rise in the number of cases of mumps following a major outbreak of the illness in the north-west.
A total of 18 cases of the contagious disease have been reported since Monday according to the Irish Independent.
This brings the total number of cases in the region to 93.
A spokesperson for the HSE says they have been mainly in the Sligo town area and south Donegal, but there are also some cases in north Donegal.
Symptoms include fever, headache and swollen, tender salivary glands.
The HSE stressed that all children and young adults should have two MMR doses.