Prevalence of antibodies to Leptospira serovars in beef cattle in central Queensland

Black, Peter; Bg, Corney; Ld, Smythe; Dohnt, Michael F.; Ma, Norris; Ml, Symonds

doi:10.1111/j.1751-0813.2001.tb12010.x

Cited by 16 publications

(15 citation statements)

References 20 publications

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“…The younger pigs had relatively less reactants as compared to the middle to older age groups, probably because the older animals have lived longer in the environment, and thus, they have become more exposed to potential sources of infection. However, this study indicated that neither sex nor age had significant effects on the frequency of leptospira antibodies (P≥0.05), which is also in agreement with other studies (Black et al 2001).…”

Section: Discussionsupporting

confidence: 94%

A microbiological and serological study of leptospirosis among pigs in the Morogoro municipality, Tanzania

Kessy¹,

Machang’u

Swai³

2009

Trop Anim Health Prod

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Serological and microbiological studies on leptospirosis in pigs from Morogoro municipality, Tanzania were carried out between October 2007 and May 2008. Serum samples (n = 385) from apparently healthy pigs were tested by microscopic agglutination test for antibodies against live cultures of six known Leptospira interrogans serovars: Pomona, Icterohaemorrhagiae, Ballum, Tarassovi, Grippotyphosa and Hardjo. Significant positive titres were detected in 4.42% (17/385) of all the tested serum samples. Asceptically collected samples, urine (n = 236) and kidney tissues (n = 214), were cultured in enriched Fletcher's and Ellinghausen McCullough-Johnson and Harris media and assessed, at weekly intervals for 24 weeks, for growth by dark-field microscopy. Two leptospiral organisms were isolated from the urine samples. There was a statistical association between seroposivity and location that the subjects reside in (P < 0.05), whereas it was not significantly associated with sex nor age (P > 0.05). The evidence of pig exposure to different serovars and the isolation of the leptospiral organisms confirm that the infection is present in pigs although with an overall low prevalence. Apart from its economic importance on to the pig industry, this disease is a potential zoonotic public health risk in Tanzania, especially because of the lack of studies on leptospirosis among persons who handle pigs and pork products.

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Section: Discussionsupporting

confidence: 94%

A microbiological and serological study of leptospirosis among pigs in the Morogoro municipality, Tanzania

Kessy¹,

Machang’u

Swai³

2009

Trop Anim Health Prod

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“…This is similar to that reported by Black et al (2001) where as age increased so did seropositivity. However, it differs to that reported in Turkey where age was not a significant factor (Aslantas and Ozdemir 2005).…”

Section: Discussionsupporting

confidence: 91%

Seroepidemiology of leptospirosis in livestock in Trinidad

Suepaul

Carrington

Campbell

et al. 2010

Trop Anim Health Prod

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A study was conducted to determine the seroprevalence of leptospirosis and infecting serovars across livestock (cattle, sheep, goats, and pigs) in Trinidad using the microscopic agglutination test with an international panel of 23 serovars. Of a total of 590 cattle tested, 21.5% were seropositive with agglutinations to 13 of the 23 antigens used in the panel. Icterohaemorrhagiae (9.3%), Sejroe (4.1%), Ballum (4.1%), and Autumnalis (1.9%) were the predominant serogroups detected in the cattle sampled (n = 590). Of 222 sheep tested, 5.0% were seropositive with agglutinations to five serovars belonging to two serogroups. These serogroups were Autumnalis at 2.7%, and Icterohaemorrhagiae at 2.3% of all sheep tested (n = 222). Of a total of 180 goats tested, 3.3% were seropositive, all agglutinating to the Icterohaemorrhagiae serogroup, 1.7% to serovar Copenhageni, 1.1% to serovar Mankarso, and 0.6% to serovar Icterohaemorrhagiae. Among pigs (n = 200), 5.0% were seropositive for five serovars belonging to three serogroups. These serogroups were Icterohaemorrhagiae at 2.5%, Australis at 2%, and Ballum at 0.5%. Overall, age and sex of animals were not significantly associated with leptospirosis with the exception of cattle where age was a significant factor for seropositivity. It was concluded that for livestock, leptospirosis may be an important zoonotic and economic disease, particularly in the case of cattle. It is imperative that the impact of leptospirosis on abortion, stillbirths, and decreased milk production in livestock in the country be assessed.

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“…This is consistent with previous reports in cattle (Black et al 2001) and possums (Trichosurus vulpecula) (Eymann et al 2007). It is generally accepted that the serovar with the highest antibody titre likely represents the infective serovar (O'Keefe et al 2002), but this may not be true in every circumstance (Levett 2001).…”

Section: Discussionsupporting

confidence: 90%

Serosurvey of leptospirosis and investigation of a possible novel serovar Arborea in farmed deer in New Zealand

Subharat

Wilson

Heuer

et al. 2011

New Zealand Veterinary Journal

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Prevalence of antibodies to Leptospira serovars in beef cattle in central Queensland

Cited by 16 publications

References 20 publications

A microbiological and serological study of leptospirosis among pigs in the Morogoro municipality, Tanzania

A microbiological and serological study of leptospirosis among pigs in the Morogoro municipality, Tanzania

Seroepidemiology of leptospirosis in livestock in Trinidad

Serosurvey of leptospirosis and investigation of a possible novel serovar Arborea in farmed deer in New Zealand

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