Monkeypox vaccination centres have opened around the country for high-priority groups.
The HSE's online booking system launched on Monday.
11 vaccination centres have opened in a number of locations, including Dublin (St. James', Vincent's and Mater Hospital), Cork, Limerick, Galway, Wexford and Portlaoise.
Those wanting to book an appointment at a centre can do so through a dedicated website. Conditions for who is eligible for vaccination are outlined by the HSE on the website.
Vaccines are available regardless of immigration status. A PPS number is not required for vaccination.
It is not considered necessary for those who have already contracted the virus to vaccinate at this time.