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Dogs and echinococcosis in Iceland

History

Hydatid disease was first described in Icelandic literature about the year 1200. According to the first qualified physician in Iceland, Bjarni Pálsson (1719-1779) was echinococcosis about 1760 one of the most frequent diseases among the human population, and was also commonly observed in sheep and cattle. Autopsies and questionaries indicate that 20-25% of the inhabitants might have been infested by hydatidosis about 1850. The nature of the disease was still unknown at that time. The dog population was estimated to be 15.000-20.000, or about one dog for every three or four people. At the same time there were in Copenhagen 1 dog for every 30-32 persons. Obviously there were too many dogs in Iceland. The sheep, cattle, dogs and humans lived in close contact. The dogs often shared a room and even bed with the family, and were the best playmate for the children. The people lived mostly in primitive houses at that time and under primitive hygienic conditions. It is therefore not wonder that the hydatid disease flourished as long as the nature of the disease was still obscure.

In 1849 the Danish physician P.A.Schleisner (1819-1900) concluded that one out of every six Icelanders suffered from hydatid disease. In 1862 doctor Harald Krabbe (1831-1917) from the Royal Veterinary and Agricultural University in Copenhagen studied the hydatid problem in Iceland. He found that 28 out of 100 dogs and most of the old sheep and cows that were slaughtered were infested with echinococcus cysts. Experiments he carried out in cooperation with an Icelandic physician Jón C Finsen (1826-1885) proved the relationship between taenias in dogs and the hydatid cysts in humans. Doctor H. Krabbe realized that most important was to inform the people of the nature of the disease in order to prevent the infestations of humans and animals with eggs of the intestinal parasites of the dog. H. Krabbe was a chief adviser to the Icelandic government on hydatid disease and prophylactic measures in the period 1860-1890. His recommendations were followed strictly for more than 100 years and partially they still are. New infestations by E. granulosus practially dissappeared in Iceland the decade 1890-1900. That is based on 7333 autopsies of people performed in the period 1932-1966. And based on 15.888 autopsies 1932-1982 only few human infestations occurred after 1900.The most recent human cases are a person born in 1937 who was autopsied in 1960, another person born in 1905 operated 1984 and the third person born in 1920 operated in 1988. In 1863 an autopsy survey of 100 dogs were carried out. E. granulosus was found in 28 of them, 75 dogs carried T. marginata. In the period one hundred years later 200 dogs were autopsied (1950-1960). T. marginata was found in 11 dogs but none of them carried E. granulosus. Reports of meat inspectors from Icelandic abattoirs did not record hydatid cysts in cattle, pigs and horses after 1961. However in the period 1953-1979, cysts of echinococcus were recorded in a total of 21 old ewes, all of which came from few farms on 2 small areas in East-Iceland. There was an indication that the parasite had been introduced to the country by an imported dog. After 1979 no hydatid cysts have been found in any animal in Iceland.

Why so successful control of hydatid disease in Iceland

Echinococcosis is a great public health and economic problem in many countries. It has been extremely difficult to eliminate it in many endemic areas. Apparently it was done in Iceland rather easily. How?

The campaign against hydatid disease in Iceland was for more than one century and partially still is based on Harald Krabbe´s recommendations: 1) Succesful information to the people. Most people in Iceland had lost either relatives or friends as a victim to hydatid disease and the memory of this disease was and still is dreaded. When people knew what to do, strong parcipitation of both young and old was easy to activate.

2) Reduction of the dog population by taxes on all dogs, higher tax on unnessesary dogs and a ban on keeping a dog without permission. Outbrakes of distemper in 1870, 1888 and 1890 reduced the number of dogs considerably, 3) Preventing the dog gaining access to raw offal and burning cysts in organs 4) Caution in dealing with dogs, esp. Children, 5) Yearly anthelmintic treatment of all dogs after the slaughtering sesion. Some factors that assisted in the campaign: -Ceasing of milking sheep on the farms, - improvement of the houses and hygiene, -strictly practiced caution on the contact between dogs and animals/people. Building of slaughterhouses all over the country in the period 1900-1920, then slaughtering on the farms almost ceased. The hydatid disese was never found in horses, rodents or in wild animals in Iceland.

References

  1. 1.

    Pálsson PA: Echinococcosis and its elimination in Iceland. In a book in regi of Ivan Kati´c Köbenhavn. 2000, Harald Krabbe Dagbog fra Island, 93-100. Ferðasaga(1863, 1870, 1871)

    Google Scholar 

  2. 2.

    Þórarinsdóttir KH: Echinokokkosen i Island og dr. Harald Krabbes indsats for dens bekæmpelse. Köbenhavn. 1999, OSVAL II – opgave, Köbenhavns University, medicinske fakultet

    Google Scholar 

  3. 3.

    Dungal N: New Zealand medical journal. 1957, 56: 212-222.

    Google Scholar 

  4. 4.

    Einarson M: Búnaðarrit. 1901, 15: 125-164.

    Google Scholar 

  5. 5.

    Einarson M: Dýralækningabók. Reykjavík. 1931, 91-93. 232-235

    Google Scholar 

  6. 6.

    Finsen J: Iagtagelser angaaende Sygdomsforholdene I Island. Köbenhavn. 1874, 177-

    Google Scholar 

  7. 7.

    Hlíðar Sig E: Lækning húsdýra Akureyri. 1915, 66-68. 102-104

    Google Scholar 

  8. 8.

    Jónassen J: Ekinokoksygdommen belyst ved islandske Lægers Erfaring. Köbenhavn. 1882, 268-

    Google Scholar 

  9. 9.

    Jónsson V: Skírnir. 1954, 128: 134-175.

    Google Scholar 

  10. 10.

    Jónsson S: Tidsskrift for Veterinærer. 1879, 137-178. 2. Rk., 9 Bd,

    Google Scholar 

  11. 11.

    Krabbe H: Athugasemdir handa Íslendingum um sullaveikina og varnir móti henni. Köbenhavn. 1864, 18-

    Google Scholar 

  12. 12.

    Krabbe H: Helmintologiske Undersögelser I Danmark og paa Island med særlig hensyn til Blæreormlidelserne ............ paa Island. Köbenhavn. 1865, 64-

    Google Scholar 

  13. 13.

    Magnússon G: Yfirlit um sögu sullaveiki á Íslandi. Reykjavík. 1913, 83-

    Google Scholar 

  14. 14.

    Pálsson PA, Vigfússon H, Henriksen K: Læknablaðið. 1971, 57: 39-51.

    Google Scholar 

  15. 15.

    Sigurðsson J: Nordisk Medicinhistorisk Årsbog. 1970, 182-198.

    Google Scholar 

  16. 16.

    Thoroddsen Þ: Landbúnaður á Íslandi. 1922, 2: 73-84.

    Google Scholar 

  17. 17.

    Bang B: Biografier af lærere ved De Danske Veterinærskole. Medlemsblad for Den Danske Dyrlægeforening, 6. Aargang, Köbenhavn. 1923, 93-99.

    Google Scholar 

  18. 18.

    Schultz Forlag JH: Dansk Biografisk Leksikon.. Bnd. 13 Köbenhavn. 1938

    Google Scholar 

  19. 19.

    Dungal N: Er sullaveikin að hverfa á Íslandi?. Læknablaðið. 1942, 28: 121-128.

    Google Scholar 

  20. 20.

    Dungal N: Eradication of Hydatid Disease in Iceland. New Zealand Medical Journal. 1957, 56: 212-222.

    Google Scholar 

  21. 21.

    Eschricht D: Afhandling om de Hydatider, der fremkaldte den I Island endemiske leversyge. I: Oversigt over Videnskabernes Selskabs Forhandlinger. 1857, 211-239.

    Google Scholar 

  22. 22.

    Faust EC: Echinococcus Disease. Nelson Loose-Leaf Medicine II. 1920, New York, 433-1

    Google Scholar 

  23. 23.

    Fenger E: Plan til en Forelæsnings-Cyclus. Kbh. 1843

    Google Scholar 

  24. 24.

    Fridriksson G: Saga Reykjavíkur 1870-1940. Reykjavík: Iðunn. 1994

    Google Scholar 

  25. 25.

    Garcia LS, Bruckner DA: Diagnostic medical parasitology. 1997

    Google Scholar 

  26. 26.

    Jónasson J: Íslenskir Þjóðhættir. 3 utg. 1961, Reykjavík: Ísafoldarprentsmiðja

    Google Scholar 

  27. 27.

    Jónsson V: Sullaveikirannsóknir Jóns Finsen og Haralds Krabbe. Skírnir. 1954, 128: 134-175.

    Google Scholar 

  28. 28.

    Krabbe H: Om Echinokokkerne, I. del I: Ugeskrift for Læger. Række 2. 1862, 37 (15): 225-235.

    Google Scholar 

  29. 29.

    Krabb H: Om Echinokokkerne, II. del. I: Ugeskrift for Læger. 2 Række. 1862, 37 (16): 241-259.

    Google Scholar 

  30. 30.

    Krabbe H: Echinokokksygdommen på Island. Ugeskrift for læger. 1864, 41 (1): 1-19. 2. Række

    Google Scholar 

  31. 31.

    Krabbe H: Blæreormlidelserne på Island og de imod dem trufne Foranstaltninger. Tidsskrift for Veterinærer. 1865, 20: 205-222. 2. Række

    Google Scholar 

  32. 32.

    Krabbe H: Helmintologiske Undersögelser I Danmark og paa Island med særlig hensyn til Blæreormlidelserne paa Island. 1: Det Kongelige Danske Videnskabernes Selskabs Skrifter 5. Række, naturvidenskabelig og mathematisk Afdeling. 1865, 7: 347-408. Köbenhavn, 64 pp.

    Google Scholar 

  33. 33.

    Leared A: Athugasemdir um sullaveikina á Íslandi. Íslendingur. 1862, 3: 105-106.

    Google Scholar 

  34. 34.

    Leared A: Athugasemdir um sullaveikina á Íslandi. Þjóðólfur. 1862, 15: 33-34.

    Google Scholar 

  35. 35.

    Magnússon G: Yfirlit yfir sögu sullaveikinnar á Íslandi. Fylgirit Árbókar Háskóla Íslands fyrir háskólaárið 1912-1913. Reykjavík. 1913

    Google Scholar 

  36. 36.

    Einarsson Matthías: Hvernig fær fólk sullaveiki?. Læknablaðið. 1925, 11: 98-100.

    Google Scholar 

  37. 37.

    Nielsen JB: Parasitologi – et kompendium. 1994, Köbenhavn: FADL´s Forlag, 2

    Google Scholar 

  38. 38.

    Olafsens og Povelsens Reise gennem Island. Soröe. 1772

  39. 39.

    Pálsson PA, Vigfússon H, Henriksen K: Læknablaðið. 1971, 57: 39-51.

    Google Scholar 

  40. 40.

    Pálsson PA: Echinococcosis and its elimination in Iceland. Hist Med Vet. 1976, 1: 4-10.

    PubMed  Google Scholar 

  41. 41.

    Pálsson PA: Echinococcosis in Iceland – historical review. XVII. Interrnational Congress of Hydatology, Limassol, Cyprus, nov. 6-10. 1996

    Google Scholar 

  42. 42.

    Pétursson J: Lækningabók fyrir Almúga. Köbenhavn: Udg. Af Thorsteinn Jónsson. 1834

    Google Scholar 

  43. 43.

    Roberts L, Janovy J: Foundations of Parasitology. 1996, Boston: Wm.C. Brown Publishers, 5

    Google Scholar 

  44. 44.

    Schleisner PA: Island undersögt fra et lægavidenskabeligt Synspunkt. Köbenhavn: Boghandler C.G.Iversen. 1849

    Google Scholar 

  45. 45.

    Sun T, Rackson M, Farber B: Current status of Hydatid Disease. Digestive Diseases. 1988, 6: 170-184. 10.1159/000171193.

    CAS  Article  PubMed  Google Scholar 

  46. 46.

    Thorsteinsson B, Jónsson B: Íslandssaga til okkar daga. Reykjavík: Sögufélag. 1991

    Google Scholar 

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Correspondence to Sigurdur Sigurdarson.

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Open Access This article is published under license to BioMed Central Ltd. This is an Open Access article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Sigurdarson, S. Dogs and echinococcosis in Iceland. Acta Vet Scand 52, S6 (2010). https://doi.org/10.1186/1751-0147-52-S1-S6

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Keywords

  • Hydatid Cyst
  • Human Case
  • Hydatid Disease
  • Intestinal Parasite
  • Echinococcus