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Between 1982 and 1999 blood samples were collected from 500 polar bears (Ursus maritimus) captured in the Beaufort and Chukchi seas, to determine the seroprevalence of Brucella species, Toxoplasma gondii, and Trichinella species infections. The bears were classified into four age groups, cubs, yearlings, subadults and adults. Brucella and Toxoplasma antibodies were detected by agglutination (a buffered acidified card antigen and rapid automated presumptive test for brucellosis and a commercial latex agglutination test for toxoplasmosis); an ELISA was used to detect Trichinella antibodies. The overall seroprevalence of Brucella species was 5 per cent, and subadults and yearlings were 2-62 times (95 per cent confidence interval 1.02 to 6.82) more likely to be seropositive for Brucella species than adults and their cubs. The antibody prevalence for Toxoplasma gondii was 6 per cent, and for Trichinella species 55.6 per cent. The prevalence of antibodies to Trichinella species increased with age (P<0.001).
Vet Rec 2005 Jan 01
PMID:Serosurvey of selected zoonotic agents in polar bears (Ursus maritimus). 1565 61

During two survey rounds of a national surveillance system for infectious diseases in wild boar in Switzerland, each lasting four months from November to February, between 2001 and 2003, 1949 blood samples and 62 tissue samples from the spleen and 50 from the reproductive organs were collected from hunted wild boar. The survey was designed so that freedom from infection could be detected with a probability of 95 per cent at a threshold prevalence of less than 1 per cent for classical swine fever and Aujeszky's disease and less than 1.5 per cent for brucellosis. There was no serological evidence of classical swine fever or Aujeszky's disease, but brucellosis due to Brucella suis biovar 2 was confirmed serologically and by bacterial isolation.
Vet Rec 2007 Mar 17
PMID:Prevalence of classical swine fever, Aujeszky's disease and brucellosis in a population of wild boar in Switzerland. 1736 76

A cross-sectional serological survey of the prevalence of brucellosis in ruminants in the Region of Republican Subordination and Khatlon oblasts (provinces) in Tajikistan was conducted in May 2003. Sera from 13,625 ruminants involving 3513 households in 172 kishlaks (villages) were collected and screened by the rose bengal test. Doubtful and positive results were further tested with competitive and indirect elisas. The overall serological prevalences (95 per cent confidence intervals [cis]) were 5.8 per cent (5.2 to 6.4 per cent) for sheep, 5.5 per cent (5.0 to 6.0 per cent) for goats and 2.1 per cent (1.0 to 3.2 per cent) for cattle. The results show that brucellosis was a common disease of ruminants that was widely but unevenly distributed throughout the two oblasts. Seropositive animals were found in 119 of the 172 kishlaks (69.2 per cent [95 per cent ci 61.9 to 75.6 per cent]) and 14.4 per cent (95 per cent ci 13.3 to 15.6 per cent) of the 3513 households. Evidence of infection was also found in cattle kept for milk production in urban kishlaks in two major cities and in state-owned dairy farms.
Vet Rec 2007 Oct 06
PMID:Survey of the seroprevalence of brucellosis in ruminants in Tajikistan. 1792 39

This paper describes an investigation of an outbreak of bovine brucellosis in County Clare, Ireland, during 2005. It is likely that infection on the index farm was linked to a previous outbreak of brucellosis in County Clare. During March to May 2005, transmission of brucellosis within the herd was rapid; this was facilitated by a range of factors, including close contact between cattle kept in winter housing, and the mixing of animals, both during grazing and at housing, throughout the year. Containment of the disease, including only limited spread to one contiguous herd, was facilitated by the recent construction of a shed for winter housing.
Vet Rec 2010 Jan 23
PMID:Outbreak of bovine brucellosis in County Clare, Ireland, in 2005. 2009 89

Thirty-five serum samples and six hygroma fluid samples were collected from sexually mature cattle in one herd with clinical signs of brucellosis (abortion and hygromas) in the Western Region of the Gambia in order to isolate and characterise Brucella species. Information on the sex, age, number of calvings, number of abortions, presence of hygromas, and presence of orchitis was also collected for each animal sampled. Twenty-six (74 per cent) of the serum samples were positive in the rose bengal test and 29 (83 per cent) were positive by indirect ELISA. Three isolates of Brucella, biotyped as Brucella abortus biovar 3, were cultured from six hygroma fluid samples. The multiple locus variable number tandem repeat analysis assay clustered the isolates as B abortus with the same profile for the three isolates, suggesting a common origin of contamination.
Vet Rec 2010 Jun 12
PMID:Phenotypic and genotypic characterisation of Brucella strains isolated from cattle in the Gambia. 2054 66

The performance of a serum PCR assay was compared with that of a blood PCR assay for the diagnosis of canine brucellosis caused by Brucella canis in 72 dogs. The dogs were classified into three groups (infected, non-infected and suspected brucellosis) according to the results of blood culture and serological tests. The sensitivities of blood PCR and serum PCR were, respectively, 97.14 per cent and 25.71 per cent. The specificities of both were 100 per cent. In the group of dogs with suspected brucellosis, three were positive by blood PCR and none was positive by serum PCR. Serum PCR showed little value for the direct diagnosis of canine brucellosis as the assay had low diagnostic sensitivity and fewer positive dogs were detected by this test than by blood culture, blood PCR, rapid slide agglutination test (RSAT) and RSAT with 2-mercaptoethanol.
Vet Rec 2010 Jul 17
PMID:Comparison of a PCR assay in whole blood and serum specimens for canine brucellosis diagnosis. 2064 87

Cross-sectional serological surveys of 13,006 small ruminants were conducted in 2003 to establish baseline levels of seropositivity to brucellosis and of 12,102 again in 2009 to evaluate the efficacy of controls based on biannual conjunctival vaccination with Rev 1. Seroprevalence dropped by 80 per cent in five years in eight pilot programme districts where vaccination was generally well implemented, and the prevalence of households with evidence of infection in their animals dropped from 25.1 to 7.5 per cent. Seroprevalence was reduced by 40 per cent in 10 districts where vaccination was intermittent with low coverage during some seasons. There were no changes in 19 districts where no vaccinations were carried out. Sheep vaccinated one or more times were found to be 2.5 times more likely to be serotest positive than were non-vaccinated sheep, whereas vaccinated goats were 6.4 times more likely to be serotest positive than non-vaccinated goats.
Vet Rec 2012 Jan
PMID:Brucellosis control in Tajikistan using Rev 1 vaccine: change in seroprevalence in small ruminants from 2004 to 2009. 2228 94

The American Veterinary Medical Association is marking its 150th anniversary in 2013, celebrating '150 years of education, science and service'. As Bruce Vivash Jones explains, veterinary surgeons from the UK played a key role in establishing a system of veterinary education in North America.
Vet Rec 2013 Jan 12
PMID:Establishing veterinary education in North America. 2331 31

RB51 vaccination can minimise the diagnostic problems associated with S19 vaccination of adult cattle, but its use for bovine brucellosis (BB) control remains controversial. Here, the evolution of BB prevalence in five high prevalence areas in Spain subjected to different control measures is described: herd depopulation of infected herds (I-III) or mass vaccination with RB51 and S19-RB51 vaccination of replacement heifers (IV-V). Annual data from the eradication campaigns were analysed at the special incidence area (SIA) level and the time to obtain herd prevalence levels of <1 per cent ('controlled status') was obtained at the local veterinary unit (LVU) level and compared using Cox's proportional hazard model. A higher annual rate of decrease in herd prevalence was observed in the SIAs subjected to vaccination (46.9%, 95% CI 43.5% to 50.0%) compared with those managed using stamping out (14.9%, 95% CI 9.6% to 19.9%). No significant differences in the time to achieve controlled status were observed between the stamping-out and vaccination strategies used at the LVU level, with median times of 60 (stamping-out LVUs) and 63 (vaccination LVUs) months. These results suggest that RB51 mass vaccination, in combination with the S19-RB51 vaccination of replacement heifers and strict implementation of other eradication measures, may provide results at least comparable with those resulting from a herd depopulation based strategy.
Vet Rec 2014 Jun 21
PMID:Comparison of depopulation and S19-RB51 vaccination strategies for control of bovine brucellosis in high prevalence areas. 2483 27

While researching a different subject in the archives of the RCVS, Bruce Vivash Jones discovered a box of pristine badges for the 10th International Veterinary Congress, which was to have been held in London in August 1914. Intrigued by why the badges were unused, he began to investigate the history of the congress. Reading official transcripts and contemporaneous news reports revealed how, despite meticulous planning and determined fundraising, the congress was overtaken by events.
Vet Rec 2014 Jun 21
PMID:Unfortunate timing . . . 2494 71


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