Navigation Links
Localized reactive badger culling raises bovine tuberculosis risk, new analysis confirms
Date:7/13/2011

Localised badger culling in response to bovine tuberculosis (TB) outbreaks increases the risk of infection in nearby herds, according to a new analysis.

The study, by researchers at the Medical Research Council Centre for Outbreak Analysis and Modelling at Imperial College London, is published today in the Royal Society journal Biology Letters.

The findings come as the Government prepares to decide whether to license farmers to organise the widespread culling of badgers over areas of 150 square kilometres or more in western England.

Bovine TB is a major animal health problem in Britain. In 2009, one in every 10 cattle herds tested showed evidence of bovine TB, leading to 35,000 cattle being slaughtered. In the last decade, the slaughter of infected cattle has cost around 500 million to the taxpayer.

Efforts to control the disease have been hampered by the persistence of Mycobacterium bovis, the bacterium that causes bovine TB, in the wild badger population, and transmission of the disease between species.

The new analysis found that the presence of any reactive culling activity in the previous year within one kilometre of a herd more than doubled the risk of bovine TB, even after adjusting for the number of confirmed outbreaks nearby. The number of badgers culled in the vicinity of the herd was also associated with increased bovine TB risk.

"These findings add to the evidence that localised reactive badger culling has a detrimental effect on tuberculosis risk for cattle," said Professor Christl Donnelly, from the MRC Centre for Outbreak Analysis and Modelling at Imperial College London, who led the study. "This may explain why culls in the past were ineffective at reducing the incidence of bovine TB."

The findings may be linked to the observation that surviving badgers in a partly-culled group wander over a larger area, increasing their contact with neighbouring cattle. This is known as the 'perturbation effect'.

The analysis was based on data from the Randomised Badger Culling Trial (RBCT), set up in 1998 by the Department for Environment, Food and Rural Affairs (Defra) to evaluate the impact of badger culling on bovine TB risk in cattle. In the RBCT, trial areas were randomly assigned to three strategies: repeated proactive culling across the whole area; reactive one-off localised culling on and around farms following outbreaks, and no culling.

The first analysis of trial data, published in 2003, found that localised badger culling increased the incidence of bovine TB in cattle, leading to reactive culling being suspended. However, some researchers questioned the way in which the results were interpreted.

The new analysis, using data from 1998 to 2007, considered only herds in the reactive culling areas. The researchers carried out a 'case-control analysis' of 604 pairs of herds, comparing herds with confirmed bovine TB outbreaks with herds that were tested but revealed no evidence of infection.


'/>"/>

Contact: Sam Wong
sam.wong@imperial.ac.uk
44-207-594-2198
Imperial College London
Source:Eurekalert

Related medicine news :

1. Researchers examine procedure utilization trends in patients with clinically localized renal masses
2. NYU Langone offers vascular-targeted photodynamic therapy for localized prostate cancer
3. Kidney removal does not prolong the lives of elderly patients with localized kidney cancer
4. LocalPrinting.com Announces Launch of Customized, Localized Print Website MiamiBusinessCards.com
5. Neural stem cells maintain high levels of reactive oxygen species, UCLA study finds
6. Over-reactive immune system kills young adults during pandemic flu
7. C-Reactive Protein Levels Vary By Race: Study
8. Antibiotic regimen effective for reactive arthritis
9. Too Much TV Raises Risk of Diabetes, Heart Disease and Death
10. Good Sleep Raises Quality of Life, Lowers Depression
11. Obesity raises breast cancer survivors risk of dying of the cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/2/2016)... ... December 02, 2016 , ... U.S. Surgeon General, Dr. Vivek Murthy, ... Murthy explains how he was inspired to practice medicine at an early age by ... about more than making diagnoses and prescribing medicine,” he states. “It is about building ...
(Date:12/2/2016)... York, NY (PRWEB) , ... December 02, 2016 , ... ... high school and while 84 percent of parents report speaking with their child about ... pornography and sexually transmitted diseases. , Mediaplanet is proud to announce the launch of ...
(Date:12/2/2016)... ... December 02, 2016 , ... Universal Medical Systems, Inc. ... the first company to offer robotic imaging to veterinary medicine is sponsoring the ... 941 for the American Association of Equine Practitioners 62nd Annual Convention from December ...
(Date:12/2/2016)... (PRWEB) , ... December 02, 2016 , ... "Pro3rd Accents ... FCPX editors to create versatile lower third titles with just a few clicks of ... Accents Volume 2 includes 30 lower third animations. Choose from various styles with accented ...
(Date:12/2/2016)... ... December 02, 2016 , ... ... Scientist & Author of Type 2 Diabetes: The Owner’s Manual, http://realtimepressrelease.com/press-releases-tagged-with/daryl-wein ... Kleyne Hour Power of Water, Global Climate Change and Your Health radio program ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... 2016 Lianluo Smart Limited (Nasdaq: ... which develops, markets and sells medical devices and ... and international markets, recently attended the ... New Progress Forum, co-hosted by the Institute of ... , Guangdong Provincial People,s Hospital and Cardiology Department ...
(Date:12/2/2016)... 1, 2016 The concept of rare diseases and ... to this sector has been taking shape in ... political aspects and initiatives related to orphan medicinal products have ... level of member states individually. Many member states in the ... space of orphan medicinal products, the result of which took ...
(Date:12/2/2016)... Allergan plc (NYSE: AGN ), a ... previously announced Accelerated Share Repurchase (ASR) Program. Logo - ... ... previously announced, the Company entered into a variable tenor ASR ... repurchase $10 billion of its ordinary shares. Approximately 40.5 million ...
Breaking Medicine Technology: