Hi I would echo what was said above re going via the AMLS-You could do the following:
1.Contact both amls.ie and MSLA.ie (The 1st is the academic body, the second is the union.) They would have details about how to get into med lab.
2.Visit your local hospital lab to get a feel for the job.It doesn't hurt to make yourself known-the med lab community is quite small in Ireland
The usual path for non med lab graduates is as follows
1.Work as a lab aide
2.On-site training program within the amls -usu lasts for 1 year
3.An MSc-either Kevin St, Coleraine or Cork (UCC)-a masters is needed for permanent posts in most hospitals outside Dublin, as the competition is quite stiff.
4.A surveillance scientist would have to have med lab qualifications also-at least they do where I work!
PM me if you have any questions,
Best of luck,
daithi