Microbiological and serological study of leptospirosis in horses at slaughter: first isolations

Rocha, Teresa; Ellis, William; Montgomery, J.M.; Gilmore, C.; Regalla, J.; Brem, S

doi:10.1016/j.rvsc.2003.12.003

Cited by 46 publications

(54 citation statements)

References 9 publications

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“…The findings of this study are also in agreement with other studies suspecting that horses may be the maintenance hosts for serovar Bratislava (Ellis et al 1983, Park et al 1992, Rocha et al 2004). The antibody titers of seropositive horses to this serovar ranged from 100 to 800 in general except for Kwazulu Natal where the range was between 100 and 3200.…”

Section: Predominant Serovars In Three Provincessupporting

confidence: 93%

“…In the present study, the reported apparent prevalence of Leptospira at a serum dilution of 1:100 in Gauteng, KwaZulu-Natal and Western Cape Provinces was 49%; 37% and 32%, respectively. Studies conducted in different parts of the world have reported a prevalence of Leptospira in horses ranging from 12.8% to 79% (Park et al 1992, Barwick et al 1998, Rocha et al 2004, Odontsetseg et al 2005, Jung et al 2010, Houwers et al 2011. Within the same region or countries, variations of the prevalence have been also reported like in Brazil (Coiro et al 2012, de Oliveira Filho et al 2014, USA (Sillerud et al 1987, Donahue et al 1995, Barwick et al 1998, Donahue and Williams.…”

Section: Apparent Prevalence Of Leptospira Serovars In Three Provincesmentioning

confidence: 99%

“…For most serovars of Leptospira, horses are incidental hosts. However there is some evidence suggesting that horses may be maintenance hosts for L. interrogans serovar Bratislava (Ellis et al 1983a, Ellis et al 1983b, Rocha et al 2004. Some other serovars that have been confirmed to be maintained in some domestic and wild animals are Hardjo with cattle, and Pomona with pigs, cattle and rodents, whereas serovars Bataviae, Icterohaemorrhagiae, Copenhageni, Autumnalis, Arborea, Australis and Zanoni are known to be maintained in rats and a wide range of small rodents (Adler and Faine.…”

Section: Epidemiology Of Leptospirosismentioning

confidence: 99%

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A study of leptospirosis in South African horses and associated risk factors

Simbizi

Saulez²,

Potts

et al. 2016

Preventive Veterinary Medicine

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between potential risk factors and both seropositive horses to the predominant serovar Bratislava and to Leptospira spp were statistically evaluated using univariable analysis and multivariable logistic regression models.Adult horses admitted to each equine hospital and horses seen on ambulatory service for various purposes were included in the study. Severely-ill, chronically infected, and horses with underlying immunosuppressive conditions were excluded from sampling, to control for potential bias.A total of 663 horse sera were collected and tested against a panel of 24 leptospiral serovars using the microscopic agglutination test. The most predominant serovars in Gauteng were The apparent prevalence to one or more serovars of Leptospira spp at a serum dilution of 1:100 in Gauteng, KwaZulu-Natal and Western Cape Provinces was 49%; 37% and 32% respectively. The true prevalence was calculated for each province taking into account the clustering effect during the sampling and was found to be between 24-74% in Gauteng; 26-39% in the Western Cape and 20-54% in KwaZulu-Natal.iv Nooitgedacht (South African horse breed) horses were found to be at greater risk of being seropositive to both serovar Bratislava (OR=5.08) and Leptospira spp (OR=6.3). Similarly, horses residing on properties with forestry in the vicinity were found to be at greater risk of being seropositive to both serovar Bratislava (OR=9.3) and Leptospira spp (OR=5.2). This study has shown that a high proportion of horses in South Africa are exposed to a wide range of serovars, inferring a complex epidemiology. It also describes for the first time new serovars of Leptospira in South African horses that have not previously been reported.v

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Section: Predominant Serovars In Three Provincessupporting

confidence: 93%

Section: Apparent Prevalence Of Leptospira Serovars In Three Provincesmentioning

confidence: 99%

Section: Epidemiology Of Leptospirosismentioning

confidence: 99%

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A study of leptospirosis in South African horses and associated risk factors

Simbizi

Saulez²,

Potts

et al. 2016

Preventive Veterinary Medicine

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“…Prevalence of particular serovars greatly depends on the exposure to specific domestic and wild mammals, and the environmental conditions for Leptospira persistence in contaminated water and moist soil 2,8 . Reservoirs of serogroup Australis are pigs, horses, hedgehogs, dogs, cattle, sheep, goats, and donkeys 16,30,31,32,33,34,35 ; rodents do not seem to be important reservoirs for this serogroup. Therefore, findings for Australis and other serogroups reported in this study could be related to the presence of several reservoir animals not assessed in the study.…”

Section: Discussionmentioning

confidence: 99%

Seroprevalence and factors associated with Leptospira infection in an urban district of Cali, Colombia

2017

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Few studies have addressed Leptospira seroprevalence and risk factors in urban populations in Colombia. This study aimed to determine seroprevalence and factors associated with Leptospira infection in inhabitants of an urban district of Cali, Colombia. We collected sociodemographic and environmental data, as well as blood samples, from 353 subjects selected through a multistage cluster sampling design. We performed microagglutination test for the eight main Leptospira serogroups circulating in the region, considering a cut-off titer of ≥ 1:100. Most participants were female (226, 64.8%), with mean age 41.4 years, and 89 (32.6%) lived in low-low socioeconomic stratum (SES-1). Overall seroprevalence was 12.2% (95%CI: 10.3%-14.4%). Factors associated with Leptospira infection were SES 1, older age, single marital status, ethnic groups (Afro-Colombian and white/mestizo), school students, absence of toilet, barefoot walking, travel outside Cali in the previous month, and absence of skin and mucous-membrane lesions in the previous month. Our study suggests domestic and peridomiciliary transmission of Leptospira likely related to activities of daily living and inadequate environmental conditions. SES-1 is a major factor associated with Leptospira infection (adjusted OR = 4.08; 95%CI: 2.54-6.53; p < 0.001), suggesting that social and environmental conditions are key elements for endemicity of Leptospira infection in the study area. Epidemiological surveillance, improvement of environmental and sanitary conditions in various SES-1 areas, and community educational campaigns are recommended.

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“…DNΑ-based techni ques were introduced to identify leptospiral serovars and even they couldn't differentiate between field strains (Zuerner and Bolin, 1990;Pacciarini et al, 1992;Djordjevic et al,1993;Zuerner et al, 1993;Corney and Colley, 1996;Bolin and Zuerner, 1996;Letocard et al, 1997;Rocha, 2004). Restriction endonuclease analysis (REA) has been widely used as an epidemiological tool and a typing method for bacterial isolates of public Marshall et al (1981) were the first to apply the REA in the classification of leptospires.…”

Section: Introductionmentioning

confidence: 99%

Differentiation of leptospiral serovars by restriction endonucleases analysis

Eljalii

Ali

2017

J Hellenic Vet Med Soc

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ΠΕΡΙΛΗΨΗ.* DNA από δέκα στελέχη λεπτόσπειρας χρησιμο ποιήθηκε για πέψη με χα ένζυμα περιορισμού HindUl, BamHi και EcoEl, με σκοπό χη διαφοροποίηση χους ανά ορόχυπο. Μεταξύ χων ορόχυπων που εξεχάοχηκαν διαπιοχώθηκε υψηλή εχερογέ-νεια. Ομοιότητες αναδείχθηκαν μεχαξυ στελεχών χου ίδιου ορό-χυπου. Δεν διαπιστώθηκε συσχέχιση μεταξύ του είδους από το οποίο απομονώθηκαν τα στελέχη που εξετάστηκαν και των τύπων στους οποίους διακρίθηκαν βάσει τυποποίησης με ένζυμα περιο ρισμού. Φαίνεται ότι η ανάλυση με τη χρήση ένζυμων περιορισμού θα ήταν χρήσιμη στη διάκριση ορότυπων της λεπτόσπειρας. * Η απόδοση της περίληψης στα ελληνικά έγινε από τον κ. Οίκο-νομόπουλο Ιωάννη, Κτηνίατρο, ΓΠΑ.

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Microbiological and serological study of leptospirosis in horses at slaughter: first isolations

Cited by 46 publications

References 9 publications

A study of leptospirosis in South African horses and associated risk factors

A study of leptospirosis in South African horses and associated risk factors

Seroprevalence and factors associated with Leptospira infection in an urban district of Cali, Colombia

Differentiation of leptospiral serovars by restriction endonucleases analysis

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