The unexpected discovery of Brucella abortus Buck 19 vaccine in goats from Ecuador underlines the importance of biosecurity measures

Jorge Ron-Roman, Dirk Berkvens, Daniela Barzallo-Rivadeneira, Alexandra Angulo-Cruz, Pablo Gonzalez-Andrade, Elizabeth Minda-Aluisa, Washington Benitez-Ortiz, Jef Brandt, Richar Rodriguez-Hidalgo, Claude Saegerman

    Research output: Contribution to journalA1: Web of Science-article

    Abstract

    Very few, mostly old, and only preliminary serological studies of brucellosis in goats exist in Ecuador. In order to assess the current epidemiological situation, we performed a cross-sectional serological study in the goat populations of Carchi (n = 160 animals), Pichincha (n = 224 animals), and Loja provinces (n = 2024 animals). Only two positive serological results (RB negative and SAT-EDTA >= 400 IU/ml) were obtained in lactating goats from the same farm in Quito (Pichincha province). Additionally, milk was sampled from 220 animals in Pichincha province. The present study indicates a low apparent prevalence in Pichincha province and absence in Carchi and Loja provinces. A total of 25 positive milk ring tests (MRT) were obtained in Pichincha province yielding a prevalence of MRT of 11.16%. Subsequent culture was performed on the positive MRT samples. All results were negative, apart from a single sample, obtained from a serologically positive goat in Quito, that was positive for Brucella abortus strain 19 (B19). Several hypotheses are forwarded concerning this unexpected result. The most likely hypothesis is the possible accidental use of a needle, previously used for vaccination of cattle with the said vaccine, for the administration of drug treatment to the goat. This hypothesis underlines the necessity of biosecurity measures to prevent this type of accidents.

    Original languageEnglish
    JournalTropical Animal Health and Production
    Volume49
    Issue number3
    Pages (from-to)569-574
    Number of pages6
    ISSN0049-4747
    DOIs
    Publication statusPublished - 2017

    Keywords

    • Brucellosis
    • Goats
    • Ecuador
    • Vaccine
    • Biosecurity
    • DIFFERENTIATION
    • DIAGNOSIS
    • STRAIN
    • CATTLE
    • PCR

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