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Evaluation of the McLintock syringe as a cause of non-specific reactions in the intradermal tuberculin test used for the diagnosis of bovine tuberculosis

Investigation article published in Research in Veterinary Science

November 28th, 2018

The objective of this study was to elucidate whether the use of the McLintock syringe, used to inject tuberculin in cattle in several countries and based on an intradermal inoculation by needle, may, in itself, cause skin reactions that can be interpreted as positive reactions regardless of the real tuberculosis (TB) infection status of the animals.
Forty-four cattle from an officially TB-free (OTF) herd were selected for the experiment. Each animal received four inoculations [one with sterile phosphate buffer saline (PBS) with 10% of glycerol and three with bovine purified protein derivative (PPD), as performed during the single intradermal tuberculin (SIT) test], two on each side of the neck (n=176 inoculations). Three different McLintock syringes (n=132 inoculations, PBS and bovine PPD) and one Dermojet syringe (n=44 inoculations, PBS) were used to carry out the inoculations.
No positive reactions (increase in skin-fold thickness>3mm) in response to the bovine PPD or PBS inoculations were observed regardless of the syringe used. No significant differences (p>0.05) in the skin fold thickness increase (in mm) were observed between inoculation sites. Significant differences (p<0.05) in the skin fold thickness were observed when PPD was injected in comparison to the PBS but no differences between McLintock and Dermojet were detected when PBS was injected. The McLintock syringe did not cause reactions per se that could be misunderstood as positive in TB-free cattle demonstrating that it is not a significant factor associated with the previously reported imperfect specificity of the SIT test




Roy A., Diez-Guerrier A., Ortega J., de la Cruz ML., Saez JL., Dominguez L., de Juan L., Alvarez J. and Bezos J..




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Evaluation of the McLintock syringe as a cause of non-specific reactions in the intradermal tuberculin test used for the diagnosis of bovine tuberculosis



Participants:

Universidad ComplutenseServicio de Micobacterias (MYC). Centro de Vigilancia Sanitaria Veterinaria (VISAVET). Universidad Complutense (UCM).

CZ Veterinaria, S.A.CZ Veterinaria, S.A. (CZV).

Universidad ComplutenseDepartamento de Sanidad Animal. Facultad de Veterinaria. Universidad Complutense (UCM).

Ministerio de Agricultura, Pesca y AlimentaciónSubdirección General de Sanidad e Higiene Animal y Trazabilidad. Dirección General de la Producción Agraria. Ministerio de Agricultura, Pesca y Alimentación (MAPA).

Universidad ComplutenseServicio de Ensayos Clínicos (SEC). Centro de Vigilancia Sanitaria Veterinaria (VISAVET). Universidad Complutense (UCM).







Research in Veterinary Science
FACTOR YEAR Q
1.616 2017

NLMID: 401300

ISSN: 0034-5288



TITLE: Evaluation of the McLintock syringe as a cause of non-specific reactions in the intradermal tuberculin test used for the diagnosis of bovine tuberculosis


JOURNAL: Res. Vet. Sci.


NUMERACIÓN: 122(2019)175-178


AÑO: 2018


PUBLISHER: Elsevier


AUTHORS: Roy A., Diez-Guerrier A., Ortega J., de la Cruz ML., Saez JL., Dominguez L., de Juan L., Alvarez J. and Bezos J..


VISAVET PARTICIPANTS


2nd
Alberto Antoine Díez Guerrier
4th
Mª Luisa de la Cruz Conty
6th
Lucas Domínguez Rodríguez
7th
Lucía de Juan Ferré
8th
Julio Álvarez Sánchez
Last
Javier Bezos Garrido

DOI: https://doi.org/ 10.1016/j.rvsc.2018.11.025


CITE THIS PUBLICATION:

Roy A., Diez-Guerrier A., Ortega J., de la Cruz ML., Saez JL., Dominguez L., de Juan L., Alvarez J. and Bezos J. Evaluation of the McLintock syringe as a cause of non-specific reactions in the intradermal tuberculin test used for the diagnosis of bovine tuberculosis. Research in Veterinary Science. 122(2019)175-178. 2018. (A). ISSN: 0034-5288. DOI: 10.1016/j.rvsc.2018.11.025


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