Clinical and epidemiological investigation of chronic upper respiratory diseases caused by beta-haemolytic Streptococci in horses

Laus, Fulvio; Preziuso, S.; Spaterna, Andrea; Beribè, Francesca; Tesei, Beniamino; Cuteri, Vincenzo

doi:10.1016/j.cimid.2007.02.003

Cited by 44 publications

(40 citation statements)

References 21 publications

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“…These publications describe studies either with a limited number of samples or addressing only a single type of organ/system/disease making it difficult to make conclusions regarding which organs and tissues are infected. 8,12,[14][15][16]19 In the case of S. equisimilis, information is very limited, and comprehensive epidemiological data is not available. 15 The goal of the present study was to have a largescale picture of these important horse pathogens in terms of tissue and/or organ distributions and susceptibility patterns against specific antimicrobials from the years 2000 to 2010.…”

mentioning

confidence: 99%

“…In a retrospective study to better characterize the etiology and pathology of equine placentitis, it was demonstrated that S. equisimilis is the seventh most common microorganism isolated from equine placentitis cases (4.7% of the total isolates). 12 A study published in 2007 described the isolation of this bacterium from horses with chronic upper respiratory disease 14 and from nasopharyngeal swabs. 15 All of these publications were based on either a limited number of isolates or addressing only a single system, which did not paint a full picture of S. equisimilis.…”

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confidence: 99%

“…equisimilis, on the other hand, was considered to be an infrequent bacterium isolated from horses, 22 and has been reported in horses from aborted placenta, 12 less frequently from abscessed lymph nodes 2 and the upper respiratory system. 14 This species is also an important pathogen of human beings, causing bacteremia, pneumonia, and endocarditis. 3 Even though there are a number of publications regarding β-hemolytic streptococci in horses, comprehensive and exhaustive studies are limited.…”

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confidence: 99%

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Beta-hemolyticStreptococcusspp. from horses

et al. 2012

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Abstract. The goal of this retrospective study was to have a comprehensive picture of the β-hemolytic streptococci of horses including tissue/organ distributions and susceptibility patterns against specific antimicrobials between January 1, 2000 and December 31, 2010. A total of 2,497 β-hemolytic streptococci were isolated from 2,391 cases, of which Streptococcus equi subsp. zooepidemicus was the most frequent isolate (72.0%). Other species isolated were Streptococcus dysgalactia subsp. equisimilis (21.3%), Streptococcus equi subsp. equi (5.8%), and unidentified β-hemolytic streptococci (0.9%). As expected, S. equi was mostly isolated from lymph node abscesses and the respiratory tract in foals and adult horses. Streptococcus equi subsp. zooepidemicus and S. equisimilis were mostly isolated from placenta, fetal tissues, and genital tract of horses; S. zooepidemicus and S. equisimilis were also recovered in significant numbers from a number of other organs including lung, liver, brain, kidney, and joints, indicating a much broader tissue tropism than S. equi. In addition, more than 1 Streptococcus spp. was recovered in 106 cases, indicating the co-existence of these bacteria in some horses. This data also suggested that S. equisimilis is a major bacterial agent of horses, contrary to present knowledge. Based on KirbyBauer antimicrobial susceptibility data, streptococci were found to be generally susceptible to cephalothin, erythromycin, nitrofurantoin, penicillin, and ticarcillin and clavulanate. Resistance to antimicrobials has not developed over the years, except for gentamicin and tetracycline against S. equisimilis.

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Beta-hemolyticStreptococcusspp. from horses

et al. 2012

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“…Streptococcus spp. are common pathogens present in the guttural pouches of horses (Newton et al, 1997;Laus et al, 2007). In our study no horse had a specific respiratory pathogen in its guttural pouch.…”

Section: Discussionmentioning

confidence: 84%

Cytological and bacteriological evaluation of transendoscopic guttural pouch lavages in clinically healthy horses

Dobešová

Bezděková

2016

Acta Veterinaria Hungarica

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Thirty-eight guttural pouch lavages from 19 clinically healthy horses were collected transendoscopically. Cytological examination and bacteriological culture of the samples were carried out. All 38 lavages assessed for cytology contained less than five per cent neutrophils and could be termed as cytologically 'normal'. In none of the lavages did the neutrophil count vary between five and 25 per cent or exceed 25 per cent, which are the borderlines for being termed 'reactive' or 'pathological', respectively. Epithelial cells were the most commonly represented cell type in all lavages. Bacteriological culture was positive in 16 out of 38 lavages, but specific pathogenic bacteria were not cultivated in any of them, and only transient microflora was present. Although the relationship between the presence of specific bacteria, neutrophil count and total cell count could not be statistically evaluated due to the absence of 'reactive' and 'pathological' lavages, transendoscopic lavage appears to be a reliable method for obtaining a sample for bacteriological culture.

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“…S. equisimilis is considered to be an infrequent pathogenic agent isolated from horses. It has been isolated from aborted placenta, less frequently from abscessed lymph nodes and from strangle-like disease of the upper respiratory system in horses [2,3,16] . The agent was also isolated from endometrial swabs (12.9%) [4] , lower respiratory tract of the foals (12.4%) [3] and adult horses (12.4%) [3] .…”

Section: Introductionmentioning

confidence: 99%

Safkan İngiliz ve Arap Yarış Atlarında Görülen Beta Hemolitik Streptococcus Türlerinin Sitolojik Bulgular Eşliğinde Çeşitli Vücut Bölgelerinden İzolasyonu ve Antibiyotik Duyarlılıkları

Mete¹

2017

Kafkas Univ Vet Fak Derg

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Clinical and epidemiological investigation of chronic upper respiratory diseases caused by beta-haemolytic Streptococci in horses

Cited by 44 publications

References 21 publications

Beta-hemolyticStreptococcusspp. from horses

Beta-hemolyticStreptococcusspp. from horses

Cytological and bacteriological evaluation of transendoscopic guttural pouch lavages in clinically healthy horses

Safkan İngiliz ve Arap Yarış Atlarında Görülen Beta Hemolitik Streptococcus Türlerinin Sitolojik Bulgular Eşliğinde Çeşitli Vücut Bölgelerinden İzolasyonu ve Antibiyotik Duyarlılıkları

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