Type

Journal Article

Authors

Simon John More
Margaret Good
Tracy Ann Clegg
Erik Houtsma

Subjects

Veterinary

Topics
national policy bovine tuberculosis btb mycobacterium bovis epidemiology cattle ireland herd recurrence eradication program

Further improvement in the control of bovine tuberculosis recurrence in Ireland (2018)

Abstract Ongoing objective assessment of national bovine tuberculosis (bTB) policy in Ireland is important to monitor efforts towards improved bTB control. The study objective was to investigate temporal trends in the risk of herd recurrence. The study included all herds derestricted following a bTB episode ending in 1998, 2008 or 2012. The respective 'study periods' were up to the end of 2001 for 1998-derestricted herds, to the end of 2011 for 2008-derestricted herds, and to the end of 2015 for 2012-derestricted herds. A multivariable Cox proportional-hazard model was developed to examine time to next restriction. The results from the model showed a continuing significant decreasing trend in herd recurrence of bTB in Ireland from 1998 until 2015: herds derestricted in 2008 were 0.75 (95 per cent CI 0.68 to 0.82) times as likely to develop a further restriction compared with 1998 herds, and herds derestricted in 2012 were 0.85 (95per cent CI 0.76 to 0.95) times as likely as 2008 herds. However, despite significant improvements, recurrence of bTB remains a concern, with 30.2 per cent (95 per cent CI 28.0 to 32.4 per cent) of herds derestricted in 2012 being re-restricted over the subsequent three years. Further work is needed to address the two key drivers of herd recurrence, namely residual infection and local reinfection.
Collections Ireland -> University College Dublin -> Veterinary Medicine Research Collection
Ireland -> University College Dublin -> School of Veterinary Medicine
Ireland -> University College Dublin -> College of Health and Agricultural Sciences

Full list of authors on original publication

Simon John More, Margaret Good, Tracy Ann Clegg, Erik Houtsma

Experts in our system

1
S J More
University College Dublin
Total Publications: 213
 
2
M Good
University College Dublin
Total Publications: 32
 
3
Tracy A Clegg
University College Dublin
Total Publications: 55
 
4
Erik Houtsma
University College Dublin