Equine infectious anemia prevalence in feral donkeys from Northeast Brazil
Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equ...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Oliveira, Fernanda G. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2017transfer abstract |
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| Schlagwörter: |
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| Umfang: |
8 |
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| Übergeordnetes Werk: |
Enthalten in: Modelling the continuous calcination of CaCO3 in a Ca-looping system - Martínez, I. ELSEVIER, 2013, an international journal on research and development in veterinary epidemiology, animal disease prevention and control, and animal health economics, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:140 ; year:2017 ; day:1 ; month:05 ; pages:30-37 ; extent:8 |
| Links: |
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| DOI / URN: |
10.1016/j.prevetmed.2017.02.015 |
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ELV040335364 |
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| 520 | |a Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. | ||
| 520 | |a Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. | ||
| 650 | 7 | |a Equine infectious anemia |2 Elsevier | |
| 650 | 7 | |a Immunodiagnosis |2 Elsevier | |
| 650 | 7 | |a Donkeys |2 Elsevier | |
| 700 | 1 | |a Cook, R. Frank |4 oth | |
| 700 | 1 | |a Naves, João H.F. |4 oth | |
| 700 | 1 | |a Oliveira, Cairo H.S. |4 oth | |
| 700 | 1 | |a Diniz, Rejane S. |4 oth | |
| 700 | 1 | |a Freitas, Francisco J.C. |4 oth | |
| 700 | 1 | |a Lima, Joseney M. |4 oth | |
| 700 | 1 | |a Sakamoto, Sidnei M. |4 oth | |
| 700 | 1 | |a Leite, Rômulo C. |4 oth | |
| 700 | 1 | |a Issel, Charles J. |4 oth | |
| 700 | 1 | |a Reis, Jenner K.P. |4 oth | |
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10.1016/j.prevetmed.2017.02.015 doi GBVA2017006000007.pica (DE-627)ELV040335364 (ELSEVIER)S0167-5877(17)30166-6 DE-627 ger DE-627 rakwb eng 630 630 DE-600 660 VZ 660 VZ 530 600 670 VZ 51.00 bkl Oliveira, Fernanda G. verfasserin aut Equine infectious anemia prevalence in feral donkeys from Northeast Brazil 2017transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. Equine infectious anemia Elsevier Immunodiagnosis Elsevier Donkeys Elsevier Cook, R. Frank oth Naves, João H.F. oth Oliveira, Cairo H.S. oth Diniz, Rejane S. oth Freitas, Francisco J.C. oth Lima, Joseney M. oth Sakamoto, Sidnei M. oth Leite, Rômulo C. oth Issel, Charles J. oth Reis, Jenner K.P. oth Enthalten in Elsevier Science Martínez, I. ELSEVIER Modelling the continuous calcination of CaCO3 in a Ca-looping system 2013 an international journal on research and development in veterinary epidemiology, animal disease prevention and control, and animal health economics Amsterdam [u.a.] (DE-627)ELV011355530 volume:140 year:2017 day:1 month:05 pages:30-37 extent:8 https://doi.org/10.1016/j.prevetmed.2017.02.015 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_70 GBV_ILN_77 GBV_ILN_121 GBV_ILN_130 GBV_ILN_666 GBV_ILN_683 51.00 Werkstoffkunde: Allgemeines VZ AR 140 2017 1 0501 30-37 8 045F 630 |
| spelling |
10.1016/j.prevetmed.2017.02.015 doi GBVA2017006000007.pica (DE-627)ELV040335364 (ELSEVIER)S0167-5877(17)30166-6 DE-627 ger DE-627 rakwb eng 630 630 DE-600 660 VZ 660 VZ 530 600 670 VZ 51.00 bkl Oliveira, Fernanda G. verfasserin aut Equine infectious anemia prevalence in feral donkeys from Northeast Brazil 2017transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. Equine infectious anemia Elsevier Immunodiagnosis Elsevier Donkeys Elsevier Cook, R. Frank oth Naves, João H.F. oth Oliveira, Cairo H.S. oth Diniz, Rejane S. oth Freitas, Francisco J.C. oth Lima, Joseney M. oth Sakamoto, Sidnei M. oth Leite, Rômulo C. oth Issel, Charles J. oth Reis, Jenner K.P. oth Enthalten in Elsevier Science Martínez, I. ELSEVIER Modelling the continuous calcination of CaCO3 in a Ca-looping system 2013 an international journal on research and development in veterinary epidemiology, animal disease prevention and control, and animal health economics Amsterdam [u.a.] (DE-627)ELV011355530 volume:140 year:2017 day:1 month:05 pages:30-37 extent:8 https://doi.org/10.1016/j.prevetmed.2017.02.015 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_70 GBV_ILN_77 GBV_ILN_121 GBV_ILN_130 GBV_ILN_666 GBV_ILN_683 51.00 Werkstoffkunde: Allgemeines VZ AR 140 2017 1 0501 30-37 8 045F 630 |
| allfields_unstemmed |
10.1016/j.prevetmed.2017.02.015 doi GBVA2017006000007.pica (DE-627)ELV040335364 (ELSEVIER)S0167-5877(17)30166-6 DE-627 ger DE-627 rakwb eng 630 630 DE-600 660 VZ 660 VZ 530 600 670 VZ 51.00 bkl Oliveira, Fernanda G. verfasserin aut Equine infectious anemia prevalence in feral donkeys from Northeast Brazil 2017transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. Equine infectious anemia Elsevier Immunodiagnosis Elsevier Donkeys Elsevier Cook, R. Frank oth Naves, João H.F. oth Oliveira, Cairo H.S. oth Diniz, Rejane S. oth Freitas, Francisco J.C. oth Lima, Joseney M. oth Sakamoto, Sidnei M. oth Leite, Rômulo C. oth Issel, Charles J. oth Reis, Jenner K.P. oth Enthalten in Elsevier Science Martínez, I. ELSEVIER Modelling the continuous calcination of CaCO3 in a Ca-looping system 2013 an international journal on research and development in veterinary epidemiology, animal disease prevention and control, and animal health economics Amsterdam [u.a.] (DE-627)ELV011355530 volume:140 year:2017 day:1 month:05 pages:30-37 extent:8 https://doi.org/10.1016/j.prevetmed.2017.02.015 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_70 GBV_ILN_77 GBV_ILN_121 GBV_ILN_130 GBV_ILN_666 GBV_ILN_683 51.00 Werkstoffkunde: Allgemeines VZ AR 140 2017 1 0501 30-37 8 045F 630 |
| allfieldsGer |
10.1016/j.prevetmed.2017.02.015 doi GBVA2017006000007.pica (DE-627)ELV040335364 (ELSEVIER)S0167-5877(17)30166-6 DE-627 ger DE-627 rakwb eng 630 630 DE-600 660 VZ 660 VZ 530 600 670 VZ 51.00 bkl Oliveira, Fernanda G. verfasserin aut Equine infectious anemia prevalence in feral donkeys from Northeast Brazil 2017transfer abstract 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. Equine infectious anemia Elsevier Immunodiagnosis Elsevier Donkeys Elsevier Cook, R. Frank oth Naves, João H.F. oth Oliveira, Cairo H.S. oth Diniz, Rejane S. oth Freitas, Francisco J.C. oth Lima, Joseney M. oth Sakamoto, Sidnei M. oth Leite, Rômulo C. oth Issel, Charles J. oth Reis, Jenner K.P. oth Enthalten in Elsevier Science Martínez, I. ELSEVIER Modelling the continuous calcination of CaCO3 in a Ca-looping system 2013 an international journal on research and development in veterinary epidemiology, animal disease prevention and control, and animal health economics Amsterdam [u.a.] (DE-627)ELV011355530 volume:140 year:2017 day:1 month:05 pages:30-37 extent:8 https://doi.org/10.1016/j.prevetmed.2017.02.015 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_70 GBV_ILN_77 GBV_ILN_121 GBV_ILN_130 GBV_ILN_666 GBV_ILN_683 51.00 Werkstoffkunde: Allgemeines VZ AR 140 2017 1 0501 30-37 8 045F 630 |
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As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. 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Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. Equine infectious anemia Elsevier Immunodiagnosis Elsevier Donkeys Elsevier Cook, R. Frank oth Naves, João H.F. oth Oliveira, Cairo H.S. oth Diniz, Rejane S. oth Freitas, Francisco J.C. oth Lima, Joseney M. oth Sakamoto, Sidnei M. oth Leite, Rômulo C. oth Issel, Charles J. oth Reis, Jenner K.P. oth Enthalten in Elsevier Science Martínez, I. ELSEVIER Modelling the continuous calcination of CaCO3 in a Ca-looping system 2013 an international journal on research and development in veterinary epidemiology, animal disease prevention and control, and animal health economics Amsterdam [u.a.] (DE-627)ELV011355530 volume:140 year:2017 day:1 month:05 pages:30-37 extent:8 https://doi.org/10.1016/j.prevetmed.2017.02.015 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_70 GBV_ILN_77 GBV_ILN_121 GBV_ILN_130 GBV_ILN_666 GBV_ILN_683 51.00 Werkstoffkunde: Allgemeines VZ AR 140 2017 1 0501 30-37 8 045F 630 |
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Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. |
| abstractGer |
Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. |
| abstract_unstemmed |
Equine infectious anemia virus (EIAV) is an important cause of morbidity and mortality throughout the world. Although the virus infects all members of the Equidae the vast majority of studies have been conducted in horses (Equus caballus) with comparatively little information available for other equid species. Brazil has one of the most abundant donkey (E. asinus) populations of any nation although the economic importance of these animals is declining as transportation becomes increasingly mechanized. As a result, considerable numbers of donkeys especially in the Northeast of the country have been released and allowed pursue an almost feral existence. Consequently, this large and growing population constitutes a significant risk as a reservoir for the maintenance and transmission of important equine infectious diseases such as glanders and equine arteritis virus in addition to EIAV. This study examines the prevalence of EIA in a semi-wild donkey population from Mossoró city, in Northeast Brazil, using AGID followed by cELISA, rgp90 ELISA and immunoblot (IB). Serum samples were collected from 367 donkeys without obvious EIA clinical signs. Subsequent testing revealed seropositive rates of 1.6% (6/367) in officially approved AGID tests, 3.3% (12/367) in cELISA and 14.4% (53/367) in the rgp90 ELISA. However, 88.7% (47/53) of the rgp90 ELISA positive samples were almost certainly false reactions because they failed to react with two or more antigens in IB. Consequently, the rpg90 ELISA has a similar sensitivity to AGID with donkey serum samples. Such high false positive rates have not been observed previously with serum samples from horses. Another highly significant finding is that 56.9% (33/58) of the donkey serum samples tested in IB had reactivity to EIAV p26 only. Although this could result from recent infection with the virus, it has been found that in some equids p26 only reactivity persists for extensive periods of time suggesting exposure to antigens possessing cross-reactive determinants or EIAV strains with envelope glycoproteins that are different from any that have been previously characterized and so undetectable by current IB techniques. |
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| title_short |
Equine infectious anemia prevalence in feral donkeys from Northeast Brazil |
| url |
https://doi.org/10.1016/j.prevetmed.2017.02.015 |
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| author2 |
Cook, R. Frank Naves, João H.F. Oliveira, Cairo H.S. Diniz, Rejane S. Freitas, Francisco J.C. Lima, Joseney M. Sakamoto, Sidnei M. Leite, Rômulo C. Issel, Charles J. Reis, Jenner K.P. |
| author2Str |
Cook, R. Frank Naves, João H.F. Oliveira, Cairo H.S. Diniz, Rejane S. Freitas, Francisco J.C. Lima, Joseney M. Sakamoto, Sidnei M. Leite, Rômulo C. Issel, Charles J. Reis, Jenner K.P. |
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| doi_str |
10.1016/j.prevetmed.2017.02.015 |
| up_date |
2024-07-06T17:14:28.457Z |
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