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Serological Investigation of Granulocytic Ehrlichia Infection in Sheep in Norway
Serum samples of 749 sheep from 75 sheep flocks in Norway, i.e. 361 lambs (6 to 7 months old) and 388 adults (>1.5 year), were analysed for antibodies to Ehrlichia equi. Ten animals from each flock were examined. Seropositive animals were found along the coast of southern Norway from Vestfold to...
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Formato: | Texto |
Lenguaje: | English |
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BioMed Central
2001
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2202325/ https://www.ncbi.nlm.nih.gov/pubmed/11887393 http://dx.doi.org/10.1186/1751-0147-42-331 |
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author | Stuen, S Bergström, K |
author_facet | Stuen, S Bergström, K |
author_sort | Stuen, S |
collection | PubMed |
description | Serum samples of 749 sheep from 75 sheep flocks in Norway, i.e. 361 lambs (6 to 7 months old) and 388 adults (>1.5 year), were analysed for antibodies to Ehrlichia equi. Ten animals from each flock were examined. Seropositive animals were found along the coast of southern Norway from Vestfold to Sør-Trøndelag (as far north as 63°38'N). Seropositive sheep were not found in southeast, east or northern Norway. Thirty-two flocks were seropositive, although tick-borne fever had only been diagnosed earlier in half of these. In 78% of the seropositive flocks, more than 80% of the sheep were seropositive. A total of 35.7 % and 36.3 % of lambs and adults were found seropositive, respectively. However, the overall seroprevalence among animals that had been grazing on Ixodes pastures were 0.80 for the lambs and 0.84 for the adults. Mean antibody titres (± SD) (log(10)) in seropositive lambs and adults were 2.59 (± 0.449) and 2.70 (± 0.481), respectively. No significant differences in either seroprevalence or mean antibody titre between sheep of different ages were obtained in this study. Based on antibodies 94% of sheep flocks on Ixodes pastures were infected with a granulocytic Ehrlichia infection. The association between seropositive flocks and Ixodes infested pasture shows a very high degree of agreement (p < 0.00001). The present study indicates that granulocytic Ehrlichia infection in sheep is underdiagnosed in Norway. |
format | Text |
id | pubmed-2202325 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2001 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-22023252008-01-17 Serological Investigation of Granulocytic Ehrlichia Infection in Sheep in Norway Stuen, S Bergström, K Acta Vet Scand Original Article Serum samples of 749 sheep from 75 sheep flocks in Norway, i.e. 361 lambs (6 to 7 months old) and 388 adults (>1.5 year), were analysed for antibodies to Ehrlichia equi. Ten animals from each flock were examined. Seropositive animals were found along the coast of southern Norway from Vestfold to Sør-Trøndelag (as far north as 63°38'N). Seropositive sheep were not found in southeast, east or northern Norway. Thirty-two flocks were seropositive, although tick-borne fever had only been diagnosed earlier in half of these. In 78% of the seropositive flocks, more than 80% of the sheep were seropositive. A total of 35.7 % and 36.3 % of lambs and adults were found seropositive, respectively. However, the overall seroprevalence among animals that had been grazing on Ixodes pastures were 0.80 for the lambs and 0.84 for the adults. Mean antibody titres (± SD) (log(10)) in seropositive lambs and adults were 2.59 (± 0.449) and 2.70 (± 0.481), respectively. No significant differences in either seroprevalence or mean antibody titre between sheep of different ages were obtained in this study. Based on antibodies 94% of sheep flocks on Ixodes pastures were infected with a granulocytic Ehrlichia infection. The association between seropositive flocks and Ixodes infested pasture shows a very high degree of agreement (p < 0.00001). The present study indicates that granulocytic Ehrlichia infection in sheep is underdiagnosed in Norway. BioMed Central 2001 2001-09-30 /pmc/articles/PMC2202325/ /pubmed/11887393 http://dx.doi.org/10.1186/1751-0147-42-331 Text en |
spellingShingle | Original Article Stuen, S Bergström, K Serological Investigation of Granulocytic Ehrlichia Infection in Sheep in Norway |
title | Serological Investigation of Granulocytic Ehrlichia Infection in Sheep in Norway |
title_full | Serological Investigation of Granulocytic Ehrlichia Infection in Sheep in Norway |
title_fullStr | Serological Investigation of Granulocytic Ehrlichia Infection in Sheep in Norway |
title_full_unstemmed | Serological Investigation of Granulocytic Ehrlichia Infection in Sheep in Norway |
title_short | Serological Investigation of Granulocytic Ehrlichia Infection in Sheep in Norway |
title_sort | serological investigation of granulocytic ehrlichia infection in sheep in norway |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2202325/ https://www.ncbi.nlm.nih.gov/pubmed/11887393 http://dx.doi.org/10.1186/1751-0147-42-331 |
work_keys_str_mv | AT stuens serologicalinvestigationofgranulocyticehrlichiainfectioninsheepinnorway AT bergstromk serologicalinvestigationofgranulocyticehrlichiainfectioninsheepinnorway |