Testing for enzootic abortion of ewes

2021 ◽  
Vol 188 (8) ◽  
pp. 314-315
Author(s):  
Katherine Timms
Keyword(s):  
Enzootic Abortion Of Ewes

scholarly journals Distribution and Severity of Placental Lesions Caused by the Chlamydia abortus 1B Vaccine Strain in Vaccinated Ewes

Pathogens ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 543
Author(s):  
Sergio Gastón Caspe ◽  
Javier Palarea-Albaladejo ◽  
Clare Underwood ◽  
Morag Livingstone ◽  
Sean Ranjan Wattegedera ◽  
...  
Keyword(s):  
Disease Outbreaks ◽  
Principal Component ◽  
Placental Pathology ◽  
Wild Type ◽  
Cell Infiltrate ◽  
Chlamydia Abortus ◽  
Vaccine Type ◽  
The Difference ◽  
Enzootic Abortion Of Ewes

Chlamydia abortus infects livestock species worldwide and is the cause of enzootic abortion of ewes (EAE). In Europe, control of the disease is achieved using a live vaccine based on C. abortus 1B strain. Although the vaccine has been useful for controlling disease outbreaks, abortion events due to the vaccine have been reported. Recently, placental pathology resulting from a vaccine type strain (vt) infection has been reported and shown to be similar to that resulting from a natural wild-type (wt) infection. The aim of this study was to extend these observations by comparing the distribution and severity of the lesions, the composition of the predominating cell infiltrate, the amount of bacteria present and the role of the blood supply in infection. A novel system for grading the histological and pathological features present was developed and the resulting multi-parameter data were statistically transformed for exploration and visualisation through a tailored principal component analysis (PCA) to evaluate the difference between them. The analysis provided no evidence of meaningful differences between vt and wt strains in terms of the measured pathological parameters. The study also contributes a novel methodology for analysing the progression of infection in the placenta for other abortifacient pathogens.

Stability and safety of a chlamydial live vaccine against enzootic abortion of ewes

Vaccine ◽  
1989 ◽  
Vol 7 (2) ◽  
pp. 178
Author(s):  
Annie Rodolakis ◽  
Françoise Bernard ◽  
Armel Souriau
Keyword(s):  
Live Vaccine ◽  
Enzootic Abortion Of Ewes

Isolation of Chlamydia psittaci from the genital tract of lambs: a possible link with enzootic abortion of ewes

1988 ◽  
Vol 123 (15) ◽  
pp. 399-400 ◽  
Author(s):  
K. Morgan ◽  
J. Wills ◽  
P. Howard ◽  
R. Williams
Keyword(s):  
Genital Tract ◽  
Chlamydia Psittaci ◽  
Enzootic Abortion Of Ewes

Enzootic abortion of ewes

1990 ◽  
Vol 126 (6) ◽  
pp. 136-138 ◽  
Author(s):  
ID Aitken ◽  
MJ Clarkson ◽  
K Linklater
Keyword(s):  
Enzootic Abortion Of Ewes

Enzootic abortion of ewes

2019 ◽  
Vol 185 (5) ◽  
pp. 137-138 ◽  
Keyword(s):  
Small Ruminant ◽  
Expert Group ◽  
Ruminant Species ◽  
Data Analyst ◽  
Enzootic Abortion Of Ewes

This focus article has been prepared by Amanda Carson and Rudolf Reichel of the APHA Small Ruminant Species Expert Group and Maggie He, data analyst at the APHA Surveillance Intelligence Unit.

Direct isolation of the agent of enzootic abortion of ewes (Chlamydia psittaci) in cell cultures

1983 ◽  
Vol 113 (18) ◽  
pp. 413-414 ◽  
Author(s):  
F. Johnson ◽  
M. Clarkson ◽  
W. Spencer
Keyword(s):  
Cell Cultures ◽  
Chlamydia Psittaci ◽  
Enzootic Abortion Of Ewes

Enzootic Abortion of Ewes

Nature ◽  
1964 ◽  
Vol 203 (4949) ◽  
pp. 1088-1089 ◽  
Author(s):  
M. J. STUDDERT ◽  
P. C. KENNEDY
Keyword(s):  
Enzootic Abortion Of Ewes

Evaluation of the impact and control of enzootic abortion of ewes

2013 ◽  
Vol 195 (2) ◽  
pp. 257-259 ◽  
Author(s):  
David Longbottom ◽  
Gary Entrican ◽  
Nicholas Wheelhouse ◽  
Helen Brough ◽  
Catherine Milne
Keyword(s):  
And Control ◽  
The Impact ◽  
Enzootic Abortion Of Ewes

Enzootic abortion of ewes recorded on 50 occasions in Scotland during March

2005 ◽  
Vol 156 (24) ◽  
pp. 759-762
Keyword(s):  
Enzootic Abortion Of Ewes
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