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Despite increasing surveillance, outbreaks of bovine tuberculosis (bTB) in the UK have steadily increased over the past two decades, with the disease now costing an estimated £100 million per annum in test and slaughter costs, and compensation payments.
Research by Professor Wood and Drs McKinley and Conlan has determined that successful control efforts will depend upon within-herd surveillance and also on reducing reintroduction from external sources; these results have directly altered the Department of Environment, Food and Rural Affairs' (Defra) new (July 2013) bovine TB strategy for England, which directly cites Dr Conlan's research when justifying changes in proposed regulations. On publication this research prompted questions during bovine Tuberculosis debates in both Westminster and the Scottish Parliament by Andrew George (MP, St. Ives) and Helen Eadie (MSP, Cowdenbeath) respectively. The work has also received national and specialist media coverage raising public awareness and understanding of bTB control in cattle.
A novel, reliable, non-invasive and rapid method has been developed to detect excretion of Mycobacterium bovis, the causal agent of bovine tuberculosis (bTB), into the environment ("shedding") by wildlife hosts. This test has been used to establish the efficacy of the bTB vaccine on reducing environmental contamination by shedding of M. bovis in the faeces (from January 2010). It has also become an important monitoring tool used by VisaVet (European Veterinary Health Surveillance), targeting bTB in wild boar and red deer (from July 2010) to establish bTB reservoirs and take action to protect the cattle stocks. Farmers will benefit and now be able to monitor environmental contamination by M. bovis, which allows them to establish biosecurity best practice.
The method includes both a presence/absence score and a quantitative assay of infectious disease load in faecal matter in the environment. This is the first standard assay to determine environmental contamination, the main route for disease spread to cattle, and allows evaluation of the impacts of vaccination, culling and increased movement of badgers during disease- management strategies. This test also enables precise monitoring of cattle herds infected with bovine tuberculosis (bTB) as it advances from the South West to the North East of England.
The research reported here has influenced the Scottish Government's Hepatitis C Action Plans and led to changes in practice in services providing sterile injecting equipment to people who inject drugs (PWID) in Scotland and to reductions in risk behaviours for hepatitis C infection among this population. Specifically, there has been an increase in the availability and uptake of sterile equipment used to prepare and inject drugs and a reduction in sharing of such equipment by PWID. More recent research is beginning to indicate that the changes in Government policy and practice are helping to reduce recent (incident) hepatitis C infections among PWID.
The bovine tuberculosis (TB) research programme led by Professor Donnelly at Imperial College has been informing policymakers for over a decade. Professor Donnelly played a leading role in the design, oversight, analysis and interpretation of the £50 million Randomised Badger Culling Trial (RBCT, 1998-2006), overseeing a bovine-TB research team at Imperial since 2001. The RBCT compared two candidate culling policies (large-scale culling repeated annually and one-off small-scale culls near farms affected by bovine TB) with areas in which no badger culling took place. Informed by RBCT results (in which widespread culling decreased cattle incidence inside the culling area but increased it on neighbouring farms), the Secretary of State Hilary Benn ruled out badger culling as a control measure in July 2008. However, the coalition government took a different view and in December 2011 announced that farmers could apply for licences to undertake farmer-led (and farmer-funded) badger culling to control TB in cattle. Several of the government's licensing requirements for badger culls in England were based on many of the team's results. In contrast, having proposed in 2010 a large government-led cull, the Welsh government chose in March 2012 to vaccinate, rather than cull, badgers informed by the same set of results.
Impact: Policy and public engagement: Formulation of the UK government's badger culling policy for the control of bovine tuberculosis that is currently being implemented. The underpinning research also had wider impact in terms of generating significant public debate and enhancing public engagement.
Significance: DEFRA has estimated the cost of TB control in England at £1 billion over the next 10 years without taking further action, and the cost of TB breakdown on a farm at £34,000
Beneficiaries: Livestock Industry (Cattle farms), Consumers, environment.
Attribution: Work performed by Professor Morrison (University of Edinburgh, UoE)
Reach: The immediate reach is the UK.
RVC's Veterinary Epidemiology, Economics and Public Health team (VEEPH) has been at the forefront of applying and evaluating new techniques for modelling disease risk, for policy and decision makers to use in surveillance and control of animal and zoonotic infections. Application of their recommendations, including European `Commission Decision' legislation, is contributing to ensuring that Europe remains free from African swine fever (ASF). The status of FAO Reference Centre in Veterinary Epidemiology, awarded by the United Nations' Food and Agriculture Organisation in 2012, recognises the RVC as a centre of excellence in this field and reinforces its role in guiding policies relating to animal health.
Impact: Economics, policy, animal and human health: In 2006, SoS (a Public Private Partnership-PPP) was established involving: University of Edinburgh, a pharmaceutical company, a charity, and the Govt. of Uganda to control sleeping sickness by eliminating Trypanasome carriage in cattle. The prevalence of trypanosomiasis has been reduced by 75% and sleeping sickness cases have fallen year on year since the PPP was established and Uganda has received a cost benefit between US$125 and $400M
Beneficiaries: The Ugandan population, Ugandan Cattle population.
Significance: Sleeping sickness, which is difficult to diagnose and treat in humans, is often fatal. Ten million Ugandans are at risk from sleeping sickness. SoS established a veterinary network in Uganda producing
Attribution: Professor Welburn (University of Edinburgh, UoE) founded SoS and developed essential diagnostic techniques.
Reach: SoS provides a model for the elimination of the disease across sub Saharan Africa in an economically sustainable fashion - with over 22 million people at risk.
The parasite Neospora caninum is the leading cause of abortion in cattle in the UK, resulting in around 6,000 abortions per year; and a $1.3b pa international problem. There are no effective drugs or vaccines to control neosporosis. University of Liverpool (UoL) research on the development of diagnostic tests, understanding the pathogenesis, epidemiology and transmission of N. caninum has made an important contribution to developing best practise herd health schemes, now offered by the Animal Health and Veterinary Laboratories Agency (AHVLA) and by a commercial company `myhealthyherd', to eradicate N. caninum infection from a herd. This has enabled cattle farmers to improve their businesses by reducing abortion rates and other costs associated with neosporosis.
QRISK is a new algorithm which predicts an individual's risk of cardiovascular over 10 years. It was developed using the QResearch database and is in routine use across the NHS. It is included in national guidelines from NICE and the Department of Health and in the GP quality and outcomes framework. It is incorporated into > 90% of GP computer systems as well as pharmacy and secondary care systems. The web calculator has been used >500,000 times worldwide. ClinRisk Ltd was incorporated in 2008 to develop software to ensure the reliable widespread implementation of the QRISK algorithm into clinical practice.
Impact: Economic / animal health and welfare: Established health schemes to control Bovine Viral Diarrhoea (BVD) on Scottish farms and subsequently underpinned the rationale for cost-effective control strategies that have been adopted in health schemes around the UK. The farm-level savings to the industry from future eradication are estimated by Scottish Government to be £50- £80m.
Significance: BVD is a major endemic disease of cattle in Scotland costing the dairy industry about £38M per year and an additional £11M to consumers.
Beneficiaries: Farmers, cattle, animal health authorities.
Attribution: Professors Gunn and Stott (SRUC).
Reach: The associated health schemes began in Scotland (HI Health) and now operate throughout Britain (UK CHeCS (Cattle Health Certification Standards) Health Scheme). The research underpins BVD control schemes in Ireland and other EU Member States resulting in an avoided output loss of between €500 to €4,000 per dairy farm per year.