Chlamydial abortion in sheep

Aitken, I.D.

doi:10.1136/inpract.8.6.236

Cited by 17 publications

(12 citation statements)

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confidence: 99%

“…1,15,24,[30][31][32][33] The disease occurs worldwide and is the most commonly diagnosed cause of ovine abortion in many areas. 1,7 Enzootic abortion of ewes is caused by ovine strains of Chlamydia psittaci which have a predilection for placental tissues. 1,30,32 Placental and fetal infections with this gram-negative bacterium result in abortion or in the birth of stillborn, moribund, or weak lambs 1,12,13,31 In severe outbreaks, up to one-third of the ewes may be affected.…”

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confidence: 99%

“…1,7 Enzootic abortion of ewes is caused by ovine strains of Chlamydia psittaci which have a predilection for placental tissues. 1,30,32 Placental and fetal infections with this gram-negative bacterium result in abortion or in the birth of stillborn, moribund, or weak lambs 1,12,13,31 In severe outbreaks, up to one-third of the ewes may be affected. 1,15 Endemic disease in a flock may result in abortion rates of 1-5%.…”

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confidence: 99%

“…1,30,32 Placental and fetal infections with this gram-negative bacterium result in abortion or in the birth of stillborn, moribund, or weak lambs 1,12,13,31 In severe outbreaks, up to one-third of the ewes may be affected. 1,15 Endemic disease in a flock may result in abortion rates of 1-5%. 1,15,[30][31][32][33] Diagnosis of Chlamydia1 abortion is generally based upon characteristic gross and light microscopic lesions in the placenta and demonstration of organisms in direct placental smears or in histologic sections.…”

mentioning

confidence: 99%

“…1,15 Endemic disease in a flock may result in abortion rates of 1-5%. 1,15,[30][31][32][33] Diagnosis of Chlamydia1 abortion is generally based upon characteristic gross and light microscopic lesions in the placenta and demonstration of organisms in direct placental smears or in histologic sections. l3,34 Other useful laboratory techniques include serology and examination of fluorescent antibody-stained impression smears or frozen sections of fetal tissues or placenta.…”

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Evaluation of an Enzyme Immunoassay for Detection ofChlamydia Psittaciin Vaginal Secretions, Placentas, and Fetal Tissues from Aborting Ewes

Sanderson

Andersen

1989

J VET Diagn Invest

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Abstract. A commercially available enzyme immunoassay (EIA) for the detection of Chlamydia trachomatisin human urogenital and conjunctival specimens was compared with isolation in cell culture for the detection of Chlamydia psittaci in vaginal and placental swabs from aborting ewes and swabs of aborted fetal tissues. The EIA on vaginal swabs collected from 10 ewes experimentally infected with C. psittaci had a sensitivity of 85.7% and a specificity of 85.7%. Vaginal swabs collected at the time of abortion or within 3 days were the best samples for detection of Chlamydia1 infection. The 29 vaginal swabs collected during this period from experimentally infected ewes were all strongly EIA-positive, and Chlamydia were isolated from 28. The EIA on vaginal swabs from 78 field cases of abortion had a sensitivity of 78.0% and a specificity of 76.8%. The EIA on swabs of cotyledons from 65 placentas had a sensitivity of 100% and a specificity of 75.0% compared with isolation in cell culture. The EIA on 57 swabs of fetal tissues or body fluids from 10 aborted fetuses or weak lambs from experimentally infected ewes had a sensitivity of 26.6% and a specificity of 88.1% compared with isolation in cell culture. Limitations of the EIA are discussed.Chlamydia1 abortion, known as enzootic abortion of ewes, is a major cause of fetal loss in sheep.

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