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1

Prevalence of Chlamydia suis in population of swine in Poland and comparison of complement fixation test and PCR used in the diagnosis of chlamydiosis

100%
Szymanska-Czerwinska M., Niemczuk K., Wojcik A.
Bulletin of the Veterinary Institute in Puławy
|
2011
|
tom 55
|
nr 3
The 61,020 samples of swine serum and vaginal swabs were collected in 2007-2009. The sera were examined by complement fixation test (CFT). Positive results were found in 277 pigs. The percentage of positive serological results in subsequent years was: 0.4%, 0.47%, and 1.65%, respectively. The vaginal swabs (n=277) selected from pigs diagnosed as positive in the CFT were tested by PCR. Occurrence of Chlamydia suis was confirmed in PCR in 200 cases. Statistical analysis (χ² test, Person and Cramer correlation coefficient) demonstrated that both methods were coincident in the diagnosis of C. suis infection in swine.
2

Chorobotwórczość Chlamydiaceae dla świń

80%
Niemczuk K., Truszczynski M., Pejsak Z.
Medycyna Weterynaryjna
|
2013
|
tom 69
|
nr 01
The following species of the family Chlamydiaceae are the most important in causing asymptomatic or symptomatic infections in swine: Chlamydophila abortus, Chlamydophila pecorum, Chlamydophila psittaci and Chlamydia suis. Mostly they cause asymptomatic infections or to an unknown percentage they participate in the etiology of multifactorial syndromes, usually with other species of facultatively pathogenic bacteria or viruses. Chlamydiaceae in pigs are not exclusive etiological agents of strictly defined diseases, as for example Chlamydia trachomatis in causing trachoma in humans, but are associated with different pathologies such as: conjunctivitis, pneumonia, pericarditis, polyarthritis, enteritis, return to estrus, abortion, mummification of fetuses or piglets before parturition, or abortion, delivery of weak piglets and increased perinatal or neonatal mortality. The mentioned chlamydial species also contribute to inferior semen quality. However, in comparison with infections or diseases of pigs caused by other microorganisms, Chlamydiaceae are at present considered as rather less important pathogens. Whether this evaluation is a proper one has to be considered in the future, since diagnostic laboratories rarely routinely investigate specimens from swine for Chlamydiaceae. In the review diagnostic tests for the identification of Chlamydiaceae were mentioned as well, with an indication of their diagnostic value. In the introduction, remarks concerning the taxonomy of Chlamydiaceae were presented.
3
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Zespoły chorobowe u świń wywoływane z udziałem chlamydii

80%
Truszczynski M., Pejsak Z.
Życie Weterynaryjne
|
2010
|
tom 85
|
nr 08
4

Chorobotwórczość chlamydii dla świń z uwzględnieniem nowych danych taksonomicznych

80%
Truszczynski M., Pejsak Z.
Medycyna Weterynaryjna
|
2010
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tom 66
|
nr 09
s.584-587,bibliogr.
Properties of chlamydia organisms were presented, including their unique growth cycle. Changes in the taxonomy were characterised. The changes are due to the use of molecular biology and the analysis of the genes 16S and 23S rRND. As a result, the order Chlamydiales contains now at least four families. Among them is the family Chlamydiaceae with two genera: Chlamydia and Chlamydophila. The genus Chlamydia includes C. trachomatis, C. muridarium and C. suis, whereas the genus Chlamydophila comprises Cp. pneumoniae, Cp. pecorum, Cp. psittaci, Cp. abortus, Cp. caviae, and Cp. felis. Cp. psittaci causes avian chlamydiosis and Cp. abortus is responsible for ovine chlamydiosis. Moreover, these species and other above-mentioned species participate in causing pathological syndromes of polyetiological character. Also swine are susceptible to these syndromes. Therefore, as a rule, this animal species suffers only from infections by chlamydia in which also other microorganisms participate and not from chlamydiosis caused exclusively by one species of chlamydia, as birds or sheep. Clinical sings of pathological syndromes caused jointly by chlamydia and other microorganisms in swine are: pneumonia, diarrhea, conjunctivitis, pericarditis, abortion and other reproductive disorders, also in boars. Antibiotics effective in chlamydial infections of swine were mentioned. Vaccines are not available. Diagnostic laboratory methods were characterized. The methods have been improved by the introduction of PCR, which makes it possible to identify chlamydia species directly from clinical specimens.
5
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Chlamydie problemem w hodowli trzody chlewnej

70%
Szymanska-Czerwinska M., Niemczuk K., Zareba-Marchewka K.
Życie Weterynaryjne
|
2021
|
tom 96
|
nr 05
6

Choroby oplatają świat

51%
Stadejek T.
Top Agrar Polska
|
2012
|
nr 06 Top Świnie
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