2023 Human Zoonoses Data
This report has been prepared using the human zoonoses data published in the Annual Infectious Disease Reports by the Health Service Executive (HSE) Health Protection Surveillance Centre (HPSC).
We do not report how many of these cases are foodborne. This is because when analysing human zoonoses data, it is challenging to determine exactly how many cases are foodborne due to several factors, such as:
- Zoonotic diseases may spread through various transmission routes including food, water, animals, the environment, person to person, making source identification difficult.
- Cases are often reported without specifying whether they are foodborne.
- Tracing foodborne sources requires complex investigations, and sometimes this can be inconclusive.
In addition, some foodborne infections may not get captured by our surveillance systems (termed underestimation). These systems typically fail to capture cases in two distinct areas:
- The community setting: since not all cases seek healthcare (termed under-ascertainment).
- The healthcare setting: where there is a failure to adequately report symptomatic cases that have sought medical advice (termed underreporting).
The numbers associated with each zoonosis may vary from prior years due to continuous updates of notification data in the Computerised Infectious Disease Reporting (CIDR) system.
In light of this, please be aware that the figures for 2023 are provisional.
Figure 1 Number of zoonotic disease cases notified in Ireland for 2023 (based on HPSC provisional figures).
Figure 2 Crude incidence rate (CIR) per 100,000 population of zoonotic disease cases notified in Ireland for 2023 (based on HPSC provisional figures).
Figure 3 Number of brucellosis cases notified in Ireland from 2015 to 2023.
Figure 4 Number of campylobacter cases notified in Ireland from 2015 to 2023.
Figure 5 Number of cryptosporidiosis cases notified in Ireland from 2015 to 2023.
Figure 6 Number of echinococcosis cases notified in Ireland from 2015 to 2023.
Figure 7 Number of leptospirosis cases notified in Ireland from 2015 to 2023.
Figure 8 Number of listeriosis cases notified in Ireland from 2015 to 2023.
Figure 9 Number of Q fever cases notified in Ireland from 2015 to 2023.
Figure 10 Number of salmonellosis cases notified in Ireland from 2015 to 2023.
Figure 11 Number of toxoplasmosis cases notified in Ireland from 2015 to 2023.
Figure 12 Number of trichinosis cases notified in Ireland from 2015 to 2023.
Figure 13 Number of tuberculosis cases notified in Ireland from 2015 to 2023.
Figure 14 Number of Variant Creutzfeldt Jakob disease cases notified in Ireland from 2015 to 2023.
Figure 15 Number of Verotoxigenic Escherichia coli infection (VTEC) cases notified in Ireland from 2015 to 2023.
Figure 16 Number of yersinosis cases notified in Ireland from 2015 to 2023.