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Artigo Produção Nacional Revisado por pares
BIBTEX RIS

Interference of intradermal tuberculin tests on the serodiagnosis of paratuberculosis in cattle

2008; Elsevier BV; Volume: 86; Issue: 3 Linguagem: Inglês

10.1016/j.rvsc.2008.08.006

ISSN

1532-2661

Autores

Renato Varges, Carla Dray Marassi, Walter Oelemann, Walter Lilenbaum,

Tópico(s)

Veterinary medicine and infectious diseases

Resumo

In this experiment 63 animals from a paratuberculosis (PTB) and tuberculosis-free herd were tested by Intradermal Tuberculin Tests (ITT) and blood samples were collected before PPD inoculation and on days 3, 15, 30, 60 and 90 post-inoculation (p.i.). Sera were tested for PTB-specific antibodies by ELISA-PPA and confirmed by a commercial ELISA. Three (4.76%) animals were positive by ELISA-PPA and five (7.93%) in the commercial ELISA, between days 30 and 90 p.i. These results suggest that ITT can interfere in the reliability of ELISAs and that serological testing for PTB should be avoided for 90 d after PPD inoculation.

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