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A Study on the Survival of Taenia saginata Eggs on Soil in Denmark

En undersøgelse af Taenia saginata æg’s overlevelsesevne på jordoverfladen i Danmark

Abstract

The infectivity of Taenia saginata eggs exposed to environmental conditions on a natural soil surface in Denmark was studied by feeding the eggs to susceptible calves, followed by determination of the number of cysts developed. The results indicated that a small proportion of the eggs remained infective for 6 1/2 months, but not for 9 1/2 months when deposited in May 1986, and for 5 1/2 months but not for 8 1/2 months when desposited in September 1987. Viability of eggs was tested in vitro and compared with infectivity obtained in calves.

Sammendrag

T. saginata æg, der havde været udsat for miljøforholdene på jordoverfladen i forskellige tidsintervaller, blev infektivitetstestet ved at indgive æggene oralt i modtagelige kalve. Efter slagtning blev antallet af udviklede cysticercer i hver kalv opgjort. Resultaterne viste, at en lille del af æggene havde bevaret infektiviteten i 6 1/2 måned men ikke i 9 1/2 måned, når de blev udlagt i maj, og i 5 1/2 måned men ikke i 8 1/2 måned, når de blev udlagt i september. Desuden blev æggenes viabilitet, undersøgt in vitro, sammenlignet med infektiviteten.

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Ilsøe, B., Kyvsgaard, N.C., Nansen, P. et al. A Study on the Survival of Taenia saginata Eggs on Soil in Denmark. Acta Vet Scand 31, 153–158 (1990). https://doi.org/10.1186/BF03547556

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