Many of the pathogens are transmitted via food especially fresh fruits and vegetables so I doubt that Ireland sells produce that is grown exclusively in the UK - The US CDC states that Americans cannot get parasites - huh? I got roundworm out and contracted a protozoa parasite.
Do follow up treatments for sure. I got them out with neem, boswellia, myrrh and oil of oregano enteric coated caps. Followed up with Vermox and Albendazole.