Featured Research

from universities, journals, and other organizations

The hidden burden of bovine Tuberculosis

Date:
October 18, 2012
Source:
Public Library of Science
Summary:
Up to 21 percent of herds clearing restrictions for bovine Tuberculosis (bTB) in Great Britain may be harbouring infection, according to a new study.

Up to 21% of herds clearing restrictions for bovine Tuberculosis (bTB) in Great Britain may be harbouring infection, according to a study published in PLOS Computational Biology this week. A cross-disciplinary group of experts in the Disease Dynamics Unit, University of Cambridge and the Animal Health and Veterinary Laboratories Agency has used mathematical models to provide the first empirical estimates of the efficiency of cattle-based controls for bovine tuberculosis (bTB). These models were developed to help policy-makers understand and control bTB as part of a project funded by Defra.

bTB was previously transmitted from cattle to people in untreated milk. However, stringent measures, including pasteurization, introduced by the British government in the 1930s have practically eliminated the risk to people. A rigorous policy reduced disease in herds to minimal levels in the 1960s, but the past 25 years have seen the disease return; around 26,000 cattle were slaughtered for bTB control in England in 2011 alone.

The models were constructed using data taken from infected herds detected through routine surveillance, either in the slaughterhouse, or through routine whole herd tests between 2003-2005.

"Around 38% of herds officially cleared of disease experience a recurrent incident within 24 months, suggesting that infection persists in herds," said lead author Dr Andrew Conlan. "We developed mathematical models, fitted carefully to extensive surveillance and testing data to estimate the efficiency of testing directly from epidemiological data rather than relying on expert opinion. Another important result is that we estimate a high rate of re-introduction of infection into herds. This suggests that eliminating the hidden burden of infection alone will not be enough to reduce rates of recurrence."

The work focused on what happens within infected herds. These models cannot predict the extent to which hidden infection contributes to transmission between herds. The models also do not distinguish between the relative roles of the badger and cattle in the spread of bTB. Quantifying the persistence of infection at the herd level is an important first step to answering these questions and provides a basis for developing more complex national models of transmission.


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Conlan AJK, McKinley TJ, Karolemeas K, Pollock EB, Goodchild AV, et al. Estimating the Hidden Burden of Bovine Tuberculosis in Great Britain. PLOS Computational Biology, 2012; 8 (10): e1002730 DOI: 10.1371/journal.pcbi.1002730

Cite This Page:

Public Library of Science. "The hidden burden of bovine Tuberculosis." ScienceDaily. ScienceDaily, 18 October 2012. <www.sciencedaily.com/releases/2012/10/121018185919.htm>.
Public Library of Science. (2012, October 18). The hidden burden of bovine Tuberculosis. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2012/10/121018185919.htm
Public Library of Science. "The hidden burden of bovine Tuberculosis." ScienceDaily. www.sciencedaily.com/releases/2012/10/121018185919.htm (accessed July 28, 2014).

Share This




More Plants & Animals News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Traditional African Dishes Teach Healthy Eating

Traditional African Dishes Teach Healthy Eating

AP (July 28, 2014) Classes are being offered nationwide to encourage African Americans to learn about cooking fresh foods based on traditional African cuisine. The program is trying to combat obesity, heart disease and other ailments often linked to diet. (July 28) Video provided by AP
Powered by NewsLook.com
Asteroid's Timing Was 'Colossal Bad Luck' For The Dinosaurs

Asteroid's Timing Was 'Colossal Bad Luck' For The Dinosaurs

Newsy (July 28, 2014) The asteroid that killed the dinosaurs struck at the worst time for them. A new study says that if it hit earlier or later, they might've survived. Video provided by Newsy
Powered by NewsLook.com
Raw: Sea Turtle Hatchlings Emerge from Nest

Raw: Sea Turtle Hatchlings Emerge from Nest

AP (July 27, 2014) A live-streaming webcam catches loggerhead sea turtle hatchlings emerging from a nest in the Florida Keys. (July 27) Video provided by AP
Powered by NewsLook.com
Russia Saves Gecko Sex Satellite, Media Has Some Fun With It

Russia Saves Gecko Sex Satellite, Media Has Some Fun With It

Newsy (July 27, 2014) The satellite is back under ground control after a tense few days, but with a gecko sex experiment on board, the media just couldn't help themselves. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins