Peste des petits ruminants (PPR) in Ethiopia : analysis of a national serological survey
Background. Peste des petits ruminants (PPR) is a contagious viral disease of small ruminants in Africa and Asia. In 1999, probably the largest survey on PPR ever conducted in Africa was initiated in Ethiopia where 13 651 serum samples from 7 out of the 11 regions were collected and analyzed by competitive enzyme-linked immunosorbent assay (cELISA). The objective of this paper is to present the results of this survey and discuss their practical implications for PPR-endemic regions. Methods. We explored the spatial distribution of PPR in Ethiopia and we investigated risk factors for positive serological status. Intracluster correlation coefficients (?), were calculated for 43 wereda (administrative units). Results. Seroprevalence was very heterogeneous across regions and even more across wereda, with prevalence estimates ranging from 0% to 52.5%. Two groups of weredas could be distinguished on the basis of the estimated ?: a group with very low ? (? < 0.12) and a group with very high ? (? > 0.37). Conclusion. The results indicate that PPRV circulation has been very heterogeneous, the values for the ? may reflect the endemic or epidemic presence of the virus or the various degrees of mixing of animals in the different areas and production systems. Age appears as a risk factor for seropositive status, the linear effect seeming to confirm in the field that PPRV is highly immunogenic. Our estimates of intracluster correlation may prove useful in the design of serosurveys in other countries where PPR is of importance.
Main Authors: | , , , , , , |
---|---|
Format: | article biblioteca |
Language: | eng |
Subjects: | L73 - Maladies des animaux, peste des petits ruminants, ruminant, virus peste petits ruminants, morbillivirus, immunologie, distribution géographique, épidémiologie, analyse du risque, Test ELISA, petits ruminants, http://aims.fao.org/aos/agrovoc/c_16789, http://aims.fao.org/aos/agrovoc/c_6695, http://aims.fao.org/aos/agrovoc/c_16581, http://aims.fao.org/aos/agrovoc/c_4937, http://aims.fao.org/aos/agrovoc/c_3808, http://aims.fao.org/aos/agrovoc/c_5083, http://aims.fao.org/aos/agrovoc/c_2615, http://aims.fao.org/aos/agrovoc/c_37936, http://aims.fao.org/aos/agrovoc/c_15968, http://aims.fao.org/aos/agrovoc/c_32579, http://aims.fao.org/aos/agrovoc/c_2676, |
Online Access: | http://agritrop.cirad.fr/546450/ http://agritrop.cirad.fr/546450/1/document_546450.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cirad-fr-546450 |
---|---|
record_format |
koha |
spelling |
dig-cirad-fr-5464502024-01-28T16:23:00Z http://agritrop.cirad.fr/546450/ http://agritrop.cirad.fr/546450/ Peste des petits ruminants (PPR) in Ethiopia : analysis of a national serological survey. Waret Agnès, Roger François, Chavernac David, Laikemariam Yigezu, Libeau Geneviève, Pfeiffer Dirk Udo, Guitian Javier. 2008. BMC Veterinary Research, 4 (34), 10 p.https://doi.org/10.1186/1746-6148-4-34 <https://doi.org/10.1186/1746-6148-4-34> Peste des petits ruminants (PPR) in Ethiopia : analysis of a national serological survey Waret, Agnès Roger, François Chavernac, David Laikemariam Yigezu, Libeau, Geneviève Pfeiffer, Dirk Udo Guitian, Javier eng 2008 BMC Veterinary Research L73 - Maladies des animaux peste des petits ruminants ruminant virus peste petits ruminants morbillivirus immunologie distribution géographique épidémiologie analyse du risque Test ELISA petits ruminants http://aims.fao.org/aos/agrovoc/c_16789 http://aims.fao.org/aos/agrovoc/c_6695 http://aims.fao.org/aos/agrovoc/c_16581 http://aims.fao.org/aos/agrovoc/c_4937 http://aims.fao.org/aos/agrovoc/c_3808 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_37936 http://aims.fao.org/aos/agrovoc/c_15968 http://aims.fao.org/aos/agrovoc/c_32579 Éthiopie http://aims.fao.org/aos/agrovoc/c_2676 Background. Peste des petits ruminants (PPR) is a contagious viral disease of small ruminants in Africa and Asia. In 1999, probably the largest survey on PPR ever conducted in Africa was initiated in Ethiopia where 13 651 serum samples from 7 out of the 11 regions were collected and analyzed by competitive enzyme-linked immunosorbent assay (cELISA). The objective of this paper is to present the results of this survey and discuss their practical implications for PPR-endemic regions. Methods. We explored the spatial distribution of PPR in Ethiopia and we investigated risk factors for positive serological status. Intracluster correlation coefficients (?), were calculated for 43 wereda (administrative units). Results. Seroprevalence was very heterogeneous across regions and even more across wereda, with prevalence estimates ranging from 0% to 52.5%. Two groups of weredas could be distinguished on the basis of the estimated ?: a group with very low ? (? < 0.12) and a group with very high ? (? > 0.37). Conclusion. The results indicate that PPRV circulation has been very heterogeneous, the values for the ? may reflect the endemic or epidemic presence of the virus or the various degrees of mixing of animals in the different areas and production systems. Age appears as a risk factor for seropositive status, the linear effect seeming to confirm in the field that PPRV is highly immunogenic. Our estimates of intracluster correlation may prove useful in the design of serosurveys in other countries where PPR is of importance. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/546450/1/document_546450.pdf application/pdf Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1186/1746-6148-4-34 10.1186/1746-6148-4-34 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=201678 info:eu-repo/semantics/altIdentifier/doi/10.1186/1746-6148-4-34 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1186/1746-6148-4-34 |
institution |
CIRAD FR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cirad-fr |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CIRAD Francia |
language |
eng |
topic |
L73 - Maladies des animaux peste des petits ruminants ruminant virus peste petits ruminants morbillivirus immunologie distribution géographique épidémiologie analyse du risque Test ELISA petits ruminants http://aims.fao.org/aos/agrovoc/c_16789 http://aims.fao.org/aos/agrovoc/c_6695 http://aims.fao.org/aos/agrovoc/c_16581 http://aims.fao.org/aos/agrovoc/c_4937 http://aims.fao.org/aos/agrovoc/c_3808 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_37936 http://aims.fao.org/aos/agrovoc/c_15968 http://aims.fao.org/aos/agrovoc/c_32579 http://aims.fao.org/aos/agrovoc/c_2676 L73 - Maladies des animaux peste des petits ruminants ruminant virus peste petits ruminants morbillivirus immunologie distribution géographique épidémiologie analyse du risque Test ELISA petits ruminants http://aims.fao.org/aos/agrovoc/c_16789 http://aims.fao.org/aos/agrovoc/c_6695 http://aims.fao.org/aos/agrovoc/c_16581 http://aims.fao.org/aos/agrovoc/c_4937 http://aims.fao.org/aos/agrovoc/c_3808 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_37936 http://aims.fao.org/aos/agrovoc/c_15968 http://aims.fao.org/aos/agrovoc/c_32579 http://aims.fao.org/aos/agrovoc/c_2676 |
spellingShingle |
L73 - Maladies des animaux peste des petits ruminants ruminant virus peste petits ruminants morbillivirus immunologie distribution géographique épidémiologie analyse du risque Test ELISA petits ruminants http://aims.fao.org/aos/agrovoc/c_16789 http://aims.fao.org/aos/agrovoc/c_6695 http://aims.fao.org/aos/agrovoc/c_16581 http://aims.fao.org/aos/agrovoc/c_4937 http://aims.fao.org/aos/agrovoc/c_3808 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_37936 http://aims.fao.org/aos/agrovoc/c_15968 http://aims.fao.org/aos/agrovoc/c_32579 http://aims.fao.org/aos/agrovoc/c_2676 L73 - Maladies des animaux peste des petits ruminants ruminant virus peste petits ruminants morbillivirus immunologie distribution géographique épidémiologie analyse du risque Test ELISA petits ruminants http://aims.fao.org/aos/agrovoc/c_16789 http://aims.fao.org/aos/agrovoc/c_6695 http://aims.fao.org/aos/agrovoc/c_16581 http://aims.fao.org/aos/agrovoc/c_4937 http://aims.fao.org/aos/agrovoc/c_3808 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_37936 http://aims.fao.org/aos/agrovoc/c_15968 http://aims.fao.org/aos/agrovoc/c_32579 http://aims.fao.org/aos/agrovoc/c_2676 Waret, Agnès Roger, François Chavernac, David Laikemariam Yigezu, Libeau, Geneviève Pfeiffer, Dirk Udo Guitian, Javier Peste des petits ruminants (PPR) in Ethiopia : analysis of a national serological survey |
description |
Background. Peste des petits ruminants (PPR) is a contagious viral disease of small ruminants in Africa and Asia. In 1999, probably the largest survey on PPR ever conducted in Africa was initiated in Ethiopia where 13 651 serum samples from 7 out of the 11 regions were collected and analyzed by competitive enzyme-linked immunosorbent assay (cELISA). The objective of this paper is to present the results of this survey and discuss their practical implications for PPR-endemic regions. Methods. We explored the spatial distribution of PPR in Ethiopia and we investigated risk factors for positive serological status. Intracluster correlation coefficients (?), were calculated for 43 wereda (administrative units). Results. Seroprevalence was very heterogeneous across regions and even more across wereda, with prevalence estimates ranging from 0% to 52.5%. Two groups of weredas could be distinguished on the basis of the estimated ?: a group with very low ? (? < 0.12) and a group with very high ? (? > 0.37). Conclusion. The results indicate that PPRV circulation has been very heterogeneous, the values for the ? may reflect the endemic or epidemic presence of the virus or the various degrees of mixing of animals in the different areas and production systems. Age appears as a risk factor for seropositive status, the linear effect seeming to confirm in the field that PPRV is highly immunogenic. Our estimates of intracluster correlation may prove useful in the design of serosurveys in other countries where PPR is of importance. |
format |
article |
topic_facet |
L73 - Maladies des animaux peste des petits ruminants ruminant virus peste petits ruminants morbillivirus immunologie distribution géographique épidémiologie analyse du risque Test ELISA petits ruminants http://aims.fao.org/aos/agrovoc/c_16789 http://aims.fao.org/aos/agrovoc/c_6695 http://aims.fao.org/aos/agrovoc/c_16581 http://aims.fao.org/aos/agrovoc/c_4937 http://aims.fao.org/aos/agrovoc/c_3808 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_37936 http://aims.fao.org/aos/agrovoc/c_15968 http://aims.fao.org/aos/agrovoc/c_32579 http://aims.fao.org/aos/agrovoc/c_2676 |
author |
Waret, Agnès Roger, François Chavernac, David Laikemariam Yigezu, Libeau, Geneviève Pfeiffer, Dirk Udo Guitian, Javier |
author_facet |
Waret, Agnès Roger, François Chavernac, David Laikemariam Yigezu, Libeau, Geneviève Pfeiffer, Dirk Udo Guitian, Javier |
author_sort |
Waret, Agnès |
title |
Peste des petits ruminants (PPR) in Ethiopia : analysis of a national serological survey |
title_short |
Peste des petits ruminants (PPR) in Ethiopia : analysis of a national serological survey |
title_full |
Peste des petits ruminants (PPR) in Ethiopia : analysis of a national serological survey |
title_fullStr |
Peste des petits ruminants (PPR) in Ethiopia : analysis of a national serological survey |
title_full_unstemmed |
Peste des petits ruminants (PPR) in Ethiopia : analysis of a national serological survey |
title_sort |
peste des petits ruminants (ppr) in ethiopia : analysis of a national serological survey |
url |
http://agritrop.cirad.fr/546450/ http://agritrop.cirad.fr/546450/1/document_546450.pdf |
work_keys_str_mv |
AT waretagnes pestedespetitsruminantspprinethiopiaanalysisofanationalserologicalsurvey AT rogerfrancois pestedespetitsruminantspprinethiopiaanalysisofanationalserologicalsurvey AT chavernacdavid pestedespetitsruminantspprinethiopiaanalysisofanationalserologicalsurvey AT laikemariamyigezu pestedespetitsruminantspprinethiopiaanalysisofanationalserologicalsurvey AT libeaugenevieve pestedespetitsruminantspprinethiopiaanalysisofanationalserologicalsurvey AT pfeifferdirkudo pestedespetitsruminantspprinethiopiaanalysisofanationalserologicalsurvey AT guitianjavier pestedespetitsruminantspprinethiopiaanalysisofanationalserologicalsurvey |
_version_ |
1792497005958791168 |