Abstract

REYES-SANDOVAL, Raúl Miguel et al. Brucella spp. seroprevalence in water buffalo Bubalus bubalis in the states of Campeche, Tabasco, and Oaxaca, Mexico. Rev. mex. de cienc. pecuarias [online]. 2025, vol.16, suppl.4, pp.104-117.  Epub Sep 15, 2025. ISSN 2448-6698.  https://doi.org/10.22319/rmcp.v16s4.6700.

Brucellosis is a serious zoonotic endemic disease in more than 170 regions worldwide. It is primarily a reproductive disease affecting human and animal health, and its effects can damage producers, and regional and national economies. In Mexico, cattle are a vital protein source and a substantial portion of the livestock sector. As an alternative animal protein source, water buffalo Bubalus bubalis was introduced to Mexico in the early 1990s and is now grown in almost all its states. However, more than 30 yr after its introduction, minimal data is available on brucellosis epidemiology in this species. Brucella spp. serological frequency in water buffalo from the states of Campeche, Tabasco, and Oaxaca, Mexico, was estimated using a cross-sectional study with non-probabilistic sampling. A total of 825 animals from eighteen herds were sampled. Screening was done using the Rose Bengal card test and confirmation with a Rivanol test. Frequencies were calculated by state and municipality. Overall frequency was 4 % with the card test and 3 % with Rivanol. All three states had seropositive cases, and 66.6 % of the sampled production units had seropositive buffalo. This constitutes the first report for the states of Campeche and Oaxaca. Although Brucella spp. seroprevalence can change over time and responds to multiple variables, the identification of seropositive animals in an eradication zone (Campeche) is serious given the current active nationwide campaign against brucellosis.

Keywords : Abortion; Brucellosis; Eradication; Epidemiology; Livestock economics.

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