Ireland – Giardiasis in Ireland, 2018


Key Facts
 Reported incidence of giardiasis in Ireland in 2018 is 5.7 per 100,000, similar to the
reported incidence at EU level
 Increase in recent yearsbelieved to be largely due to recent changes in laboratory
 The ratio to male to female cases is 1.4:1
 More than two thirds of cases were reported to be acquired in Ireland, a change to our
historical understanding of giardiasis as a travel-acquired infection
 It is likely there is still under-ascertainment of giardiasis cases in several HSE-areas.
 Much remains to be done in Ireland and across Europe to better understand the
epidemiology and determinants of this disease


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