Isolation of Mycobacterium tuberculosis from livestock workers and implications for zooanthroponotic transmission in Ibadan, South-western Nigeria
Vol. 59 No. 3 (2018), Articles
Vol. 59 No. 3 (2018)

Isolation of Mycobacterium tuberculosis from livestock workers and implications for zooanthroponotic transmission in Ibadan, South-western Nigeria

Articles
https://doi.org/10.15167/2421-4248/jpmh2018.59.3.882
Published 2018-10-06
Simeon Idowu Cadmus
University of Ibadan
Victor Oluwatoyin Akinseye
University of Ibadan
Aderosoye Adegbulu
University of Ibadan
Naomi Ovwighose
University of Ibadan
Modupe Ayoola
University of Ibadan
Joseph Akwoba Ogugua
University of Ibadan
Hezekiah Kehinde Adesokan
University of Ibadan, Nigeria
Eniola Cadmus
University of Ibadan
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Keywords

Tuberculosis
non-tuberculous mycobacteria
Zoonoses
Molecular characterization
Nigeria

Abstract

Introduction: Tuberculosis (TB) remains a public health problem in sub-Saharan Africa coupled with dearth of information about the disease among livestock workers at risk of infection. We determined the prevalence of pulmonary TB infection and risk factors associated with its occurrence among livestock workers in south-western Nigeria. 

Methods:  A cross-sectional study was conducted using active case-finding among livestock workers with sub-clinical pulmonary TB between August, 2014 and March, 2015. Sputum samples were cultured and subjected to a two-step multiplex-PCR technique based on genus-typing and genomic regions-of-difference. Interviewer-administered questionnaire was utilized in assessing worker’s TB related knowledge, attitude and practices. Data were analysed using STATA 12.

Results: Overall, 206 livestock workers (traders =136; butchers = 70) were screened; 5.1% (7/136) of the traders and 7.1% (5/70) of the butchers had positive mycobacterial cultures. Molecular techniques identified one Mycobacterium tuberculosis with six non-tuberculous mycobacteria (NTM) from the traders and four M. tuberculosis with one NTM from the butchers.

Participants within the age range of 50 years and above were at higher risk of being infected with TB (OR=7.7; 95%CI:1.7–35.6).

Conclusion: We confirmed M. tuberculosis as the cause of pulmonary TB among the livestock workers, with implications for zooanthroponotic transmission of the disease along the human-animal ecosystem interface in Nigeria.

https://doi.org/10.15167/2421-4248/jpmh2018.59.3.882
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