Canadian Journal of Public Health

, Volume 101, Issue 4, pp 337–340 | Cite as

Hospitalization for Trichinellosis and Echinococcosis in Canada, 2001–2005: The Tip of the Iceberg?

  • Nicolas L. Gilbert
  • Oluwayemisi K. Dare
  • Michael D. Libman
  • Pia K. Muchaal
  • Nicholas H. Ogden
Quantitative Research



This study was undertaken to measure the incidence of echinococcosis and trichinellosis hospitalization in Canada, and to compare these incidence rates between residents of northern regions and the rest of the Canadian population.


Cases hospitalized in 2001–2005 for either echinococcosis or trichinellosis were retrieved from the hospital morbidity database (HMDB) held by the Canadian Institute for Health Information. Crude and standardized incidence rates were calculated by province and by latitude range.


A total of 108 echinococcosis and 14 trichinellosis hospitalizations were found, yielding incidence rates of 0.72 and 0.09 per million per year, respectively. There was a clear south-north gradient in the incidence of echinococcosis hospitalization, the highest incidence (2.9 per million per year) being found north of the 55th parallel. The risk of echinococcosis hospitalization was also significantly higher in women than in men (RR 1.92, 95% CI 1.2–2.87). For trichinellosis, the highest incidence (42 per million per year) was found in Nunavut and Northern Québec.


Incidence of hospitalization for echinococcosis and trichinellosis is low at the national level. However, significantly higher rates have been measured in northern regions of Canada despite the fact that both diseases are theoretically preventable and that a Trichinella control program is in place in Nunavik. Further efforts, probably educational in nature, will be required to reduce the incidence of these infections in high-risk areas.

Key words

Echinococcosis trichinellosis hospitalization Canada 



Cette étude a été entreprise pour mesurer l’incidence des hospitalisations causées par la trichinose et l’échinococcose au Canada et pour comparer les taux mesurés chez les habitants des régions nordiques à ceux mesurés chez les autres Canadiens.


Les cas hospitalisés de 2001 à 2005 pour l’échinococcose ou la trichinose ont été extraits de la base de données sur la morbidité hospitalière (BDMH) de l’Institut canadien d’information sur la santé. Les taux d’incidence bruts et standardisés ont été calculés par province et par intervalle de latitude.


En tout, 108 hospitalisations causées par l’échinococcose et 14 par la trichinose ont été trouvées. Les taux d’incidence de ces deux maladies étaient respectivement de 0,72 et 0,09 par million par année. Il y avait un clair gradient sud-nord pour l’incidence des hospitalisations causées par l’échinococcose, l’incidence la plus élevée (2,9 par million par année) ayant été mesurée au nord du 55e parallèle. Le risque d’hospitalisation causée par l’échinococcose était aussi plus élevé chez les femmes que chez les hommes (RR 1,92, IC 95% 1,29–2,87). Pour la trichinose, l’incidence la plus élevée (42 par million par année) a été mesurée au Nunavut et dans le nord du Québec.


L’incidence des hospitalisations causées par la trichinose et l’échinococcose est faible au niveau national. Toutefois, des taux significativement plus élevés ont été mesurés dans les régions nordiques du Canada, et ce bien que les deux maladies soient théoriquement évitables et qu’un programme de prévention de la trichinose soit en place au Nunavik. Des efforts accrus, probablement de nature éducative, seront nécessaires pour réduire l’incidence de ces deux maladies dans les régions à risque.

Mots clés

échinococcose trichinose hospitalisations Canada 


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Copyright information

© The Canadian Public Health Association 2010

Authors and Affiliations

  • Nicolas L. Gilbert
    • 1
    • 2
  • Oluwayemisi K. Dare
    • 3
  • Michael D. Libman
    • 4
  • Pia K. Muchaal
    • 3
  • Nicholas H. Ogden
    • 5
  1. 1.Environmental Issues DivisionPublic Health Agency of CanadaOttawaCanada
  2. 2.Département de médecine sociale et préventiveUniversité de MontréalMontrealCanada
  3. 3.Surveillance and Targeted Studies DivisionPublic Health Agency of CanadaGuelphCanada
  4. 4.Division of Infectious DiseasesMcGill University Health CentreMontréalCanada
  5. 5.Zoonoses DivisionPublic Health Agency of CanadaSaint-HyacintheCanada

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