Appraisal of interpretation criteria for the single intra-dermal comparative cervical tuberculin test for the diagnosis of tuberculosis in dromedary camels in Ethiopia

Yasmin Jibril, Gezahegne Mamo, Ahmed Issa, Aboma Zewude, Gobena Ameni

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Dromedary camels are the main sources of milk, meat and income for the Ethiopian pastoralists as they withstand the harsh environments of the regions of the country. Tuberculosis (TB) affects dromedary camels causing morbidity and mortality in these animals. Hence, early diagnosis and identification of infected camels play a significant role in reducing the transmission of TB in camels. This study was conducted on 168 camels between October 2014 and July 2015 to evaluate the performance of single intra-dermal comparative cervical tuberculin (SICCT) to diagnose TB in camels. Gross pathology was used as a gold standard to define disease status of each camel. The result showed that at the cutoff value of ≥ 3 mm SICCT had optimum performance with sensitivity and specificity of 60.7 and 85%, respectively. Moreover, at a cutoff ≥ 3 mm, the receiver operating characteristics (ROC) revealed area under the ROC curve was 0.729 (0.615–0.842) which is statistically significant (p = 0.000). Thus, the result of the present study could suggest the use of ≥ 3 mm cutoff value for the diagnosis of TB in dromedary camels in Ethiopia.

Original languageEnglish
Pages (from-to)1665-1670
Number of pages6
JournalTropical Animal Health and Production
Volume50
Issue number7
DOIs
Publication statusPublished - Oct 1 2018
Externally publishedYes

Keywords

  • Cutoff value
  • Dromedary camel
  • Ethiopia
  • Gross pathology
  • Tuberculin skin test
  • Tuberculosis

ASJC Scopus subject areas

  • Food Animals
  • Animal Science and Zoology

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