Recurrent bovine tuberculosis in New Zealand cattle and deer herds, 2006–2010

Dawson, K. L.; Stevenson, M.A.; Sinclair, JA; Bosson, M.

doi:10.1017/s0950268814000910

Cited by 12 publications

(15 citation statements)

References 26 publications

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“…These findings agree with the investigations in the UK and Ireland, which have shown repeatedly that bTB spreads from de‐restricted herds to clear herds via the transfer of undetected infection after de‐restriction [].113 …”

Section: Give a Cautious Overall Interpretation Of Results Considesupporting

confidence: 91%

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Explanation and Elaboration Document for the STROBE‐Vet Statement: Strengthening the Reporting of Observational Studies in Epidemiology—Veterinary Extension

O’Connor

Sargeant

Dohoo

et al. 2016

Veterinary Internal Medicne

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The STROBE (Strengthening the Reporting of Observational Studies in Epidemiology) statement was first published in 2007 and again in 2014. The purpose of the original STROBE was to provide guidance for authors, reviewers, and editors to improve the comprehensiveness of reporting; however, STROBE has a unique focus on observational studies. Although much of the guidance provided by the original STROBE document is directly applicable, it was deemed useful to map those statements to veterinary concepts, provide veterinary examples, and highlight unique aspects of reporting in veterinary observational studies. Here, we present the examples and explanations for the checklist items included in the STROBE‐Vet statement. Thus, this is a companion document to the STROBE‐Vet statement methods and process document (JVIM_14575 “Methods and Processes of Developing the Strengthening the Reporting of Observational Studies in Epidemiology—Veterinary (STROBE‐Vet) Statement” undergoing proofing), which describes the checklist and how it was developed.

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Section: Give a Cautious Overall Interpretation Of Results Considesupporting

confidence: 91%

“…However, this study has added weight to the growing body of evidence to show that residual infection in herds poses a problem to bTB eradication schemes, and that the goal should be to maximize within‐herd sensitivity in the management of this problematic infection.113 …”

Section: Discuss the Generalizability (External Validity) Of The Smentioning

confidence: 99%

Explanation and Elaboration Document for the STROBE‐Vet Statement: Strengthening the Reporting of Observational Studies in Epidemiology—Veterinary Extension

O’Connor

Sargeant

Dohoo

et al. 2016

Veterinary Internal Medicne

View full text Add to dashboard Cite

show abstract

“…The association between dairy herds and bTB was reported by several authors from Brazil and other countries. This is primarily due to the prolonged time of production and the agglomeration of the animals for the milking procedures, factors that contribute to the persistence and propagation of bovine tuberculosis (BAHIENSE et al, 2016;BARBIERI et al, 2016;GALVIS et al, 2016;GRISI-FILHO et al, 2011;QUEIROZ et al, 2016;ROCHA et al, 2016;VELOSO et al, 2016;DAWSON et al, 2014;PEREZ et al, 2002;PORPHYRE et al, 2008;ZENDEJAS-MARTÍNEZ et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Prevalence and risk factors for bovine tuberculosis in the State of São Paulo, Brazil

Dias¹,

Ulloa-Stanojlovic²,

Belchior³

et al. 2016

SCA

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A cross sectional study was carried out between May and November 2011 to investigate the epidemiological situation of bovine tuberculosis (bTB) in the state of São Paulo, Brazil. The state was divided into seven regions. Three hundred farms from each region, with reproductive activity, were randomly chosen and included as primary sample units. A fixed number of bovine females, older than 2 years of age, were randomly selected and tested, using the comparative cervical tuberculin test. An epidemiological questionnaire based survey was conducted in the selected farms. Our results show that in the state of São Paulo, the apparent prevalence of positive farms was 9% (95% confidence interval, 95% CI = 7.8 -10.5%). The prevalence in the individual regions varied between 3.5% (95% CI = 1.7 -6.8%) and 13.9% (95% CI = 10.2 -18.8%). The apparent prevalence of positive animals in the state was 1.3% (95% CI = 0.9 -1.7%) and varied from 0.3% (95% CI = 0.2 -0.6%) to 2.5% (95% CI = 1.4 -4.5%) in the regions. The risk factors associated with tuberculosis in the state were (i) number of adult females in a herd is ≥ 24 (Odds ratio, OR = 1.91, 95% CI = 1.32 -2.75), (ii) type of farm enterprise (dairy: OR = 2.70, 95% CI = 1.40 -5.21; mixed: OR = 2.03, 95% CI = 1.08 -3.82), (iii) milking process (milking parlor: OR = 4.12, 95% CI = 1.46 -11.64; portable milking machine: OR = 2.94, 95% CI = 1.42 -6.09), and (iv) pasture sharing (OR = 1.58, 95% CI = 1.07 -2.33). The state of São Paulo should implement a structured surveillance system to detect and mitigate the disease. Further, an efficient animal health education program, which encourages the farmers to test replacement animals for bTB prior to introduction in their herds and to avoid pasture sharing with farms of unknown sanitary conditions should also be implemented. ResumoUm estudo transversal foi realizado entre maio e novembro de 2011 para determinar a situação epidemiológica da tuberculose bovina (bTB) no estado de São Paulo, Brasil. O estado foi dividido em sete regiões. Trezentas propriedades com atividade reprodutiva de bovinos de cada região foram aleatoriamente selecionadas e consideradas unidades primárias de amostragem. Um número fixo de fêmeas bovinas com idade superior a dois anos foram aleatoriamente selecionadas e testadas usando o teste cervical comparativo. Um inquérito epidemiológico, utilizando um questionário específico, foi realizado em cada propriedade selecionada. Os nossos resultados indicam que no estado de São Paulo, a prevalência aparente de propriedades positiva foi de 9% (intervalo de confiança de 95%, IC95% = 7,8 -10,5%). A prevalência nas diferentes regiões variou entre 3,5% (IC95% = 1,7 -6,8%) e 13,9% (IC95% = 10,2 -18,8%). A prevalência aparente de animais positivos no estado foi 1,3% (IC95% = 0,9 -1,7%) e variou de 0,3% (IC95% = 0,2 -0,6%) até 2,5% (IC95% = 1,4 -4,5%) nas regiões. Os fatores de risco associados à tuberculose no estado foram (i) número de fêmeas adultas nos rebanhos ≥ 24 (Odds ratio, OR = 1,91, IC95% = 1,32 -2,75), (ii) tip...

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“…This is of particularly concern at the time of TB derestriction, noting that residually infected animals can pose a future infection risk to the index or neighbouring herds, or to herds to which the animal subsequently moves. Multiple studies from a range of countries have highlighted the contribution of residual infection to TB persistence in a herd or locality (including [16, 45, 49, 50]). Further, difficulties in clearing infected herds, leading to herd TB recurrence, has been identified as a key challenge to TB eradication, in Ireland [45], New Zealand [50] and the UK [51].…”

Section: Additional Measuresmentioning

confidence: 99%

“…3Screenshot of cattle movement events in Ireland, in this case from 12 August 2016. From McGrath et al [50]. The blue lines depict movements to slaughter or export, and the red lines from farm to farm including via a mart.…”

Section: Additional Measuresmentioning

confidence: 99%

Can bovine TB be eradicated from the Republic of Ireland? Could this be achieved by 2030?

2019

Ir Vet J

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Background There has been an ongoing decline in bovine tuberculosis (TB) in the Republic of Ireland, however, TB has yet to be eradicated. Further to a recent commitment by the Irish government to eradicate TB by 2030, this paper considers two questions, ‘Can bovine TB be eradicated from the Republic of Ireland?’ and ‘Could this be achieved by 2030?’, given current knowledge from research. Main body of the abstract Until very recently, Ireland has lacked key tools required for eradication. This gap has substantially been filled with the national roll-out of badger vaccination. Nonetheless, there is robust evidence, drawn from general national research, international experiences, and results of a recent modelling study, to suggest that all current strategies plus badger vaccination will not be sufficient to successfully eradicate TB from Ireland by 2030. We face a critical decision point in the programme, specifically the scope and intensity of control measures from this point forward. Adequate information is available, both from research and international experience, to indicate that these additional measures should broadly focus on adequately addressing TB risks from wildlife, implementing additional risk-based cattle controls, and enhancing industry engagement. These three areas are considered in some detail. Conclusion Based on current knowledge, it will not be possible to eradicate TB by 2030 with current control strategies plus national badger vaccination. Additional measures will be needed if Ireland is to eradicate TB within a reasonable time frame. Decisions made now will have long-term implications both in terms of time-to-eradication and cumulative programme costs.

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Recurrent bovine tuberculosis in New Zealand cattle and deer herds, 2006–2010

Cited by 12 publications

References 26 publications

Explanation and Elaboration Document for the STROBE‐Vet Statement: Strengthening the Reporting of Observational Studies in Epidemiology—Veterinary Extension

Explanation and Elaboration Document for the STROBE‐Vet Statement: Strengthening the Reporting of Observational Studies in Epidemiology—Veterinary Extension

Prevalence and risk factors for bovine tuberculosis in the State of São Paulo, Brazil

Can bovine TB be eradicated from the Republic of Ireland? Could this be achieved by 2030?

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