Evolution of bovine brucellosis in Colombia over a 7-year period (2006–2012)
- 227 Downloads
Bovine brucellosis is endemic in Colombia, and is a mandatory notifiable disease, subjected to a control program based on four surveillance procedures: passive surveillance, test-and-remove, certification of disease-free farms, and animal movements. The objective of this study is to estimate the evolution of bovine brucellosis in Colombia over a 7-year period (2006–2012) using data from the official control program. A total of 58 epidemiologic variables were analyzed for each year at the department level. Univariate descriptive analysis and principal components analysis (PCA) were performed to ascertain the behavior of the variables. These programs covered 3% of the census in 2006, increasing to 15% in 2012. The percentage of positive farms averaged 22% in 2006 and 23% in 2012. The highest proportion of positive farms was in the Orinoquía region (24.6 to 49.6%); the lowest was in the Amazon region, (17.9 to 32.7%). The percentage of positive animals presented certain differences between years but without any clear trend (4.7% in 2006 and 4.6% in 2012), indicating that the brucellosis control program had a low impact in Colombia in these years. The results for each surveillance procedure were 6.8% for passive surveillance, 5.9% for test-and-remove, and 4.4% both in disease-free farms and in animal movement tests. The results obtained by PCA led to finding three different clusters: geographic areas with low bovine production and low bovine brucellosis surveillance, areas with medium bovine production and medium surveillance for bovine brucellosis, and areas with a predominant bovine production, applying sanitary measures to control bovine brucellosis.
KeywordsBrucella abortus Colombia Passive surveillance Principal components analysis (PCA)
The authors would like to thank the Colombian official veterinary service for providing information and for supporting the development of this study. Zaida Liliana Cárdenas Contreras holds a Ph.D. grant from the Ministry of Education in Colombia (COLCIENCIAS 617/2013 scholarship).
Compliance with ethical standards
Conflict of interest statement
The authors declare that they have no conflict of interest.
- Alves, A.J.S., Rocha, F., Amaku, M., Ferreira, F., Telles, E.O., Grisi Filho, J.H.H., Ferreira Neto, J.S., Zylbersztajn, D. and Dias, R.A., 2015. Economic analysis of vaccination to control bovine brucellosis in the states of Sao Paulo and Mato Grosso, Brazil, Preventive Veterinary Medicine, 118, 351–358. doi: https://doi.org/10.1016/j.prevetmed.2014.12.010 CrossRefPubMedGoogle Scholar
- Aznar, M.N., Linares, F.J., Cosentino, B., Sago, A., La Sala, L., León, E., Duffy, S. and Perez, A., 2015. Prevalence and spatial distribution of bovine brucellosis in San Luis and La Pampa, Argentina, BMC Veterinary Research, 11, 209. doi: https://doi.org/10.1186/s12917-015-0535-1 CrossRefPubMedPubMedCentralGoogle Scholar
- Borba, M.R., Stevenson, M.A., Gonçalves, V.S.P., Neto, J.S., Ferreira, F., Amaku, M., Telles, E.O., Santana, S.S., Ferreira, J.C.A., Lôbo, J.R., Figueiredo, V.C.F. and Dias, R.A., 2013. Prevalence and risk-mapping of bovine brucellosis in Maranhão State, Brazil, Preventive Veterinary Medicine, 110, 169–176. doi: https://doi.org/10.1016/j.prevetmed.2012.11.013 CrossRefPubMedGoogle Scholar
- Castaño, M., Navarro, E. and Solera, J., 2017. Brucellosis. Reference Module in Biomedical Science, International Encyclopedia of Public Health, 2nd edn, 281–295. doi: https://doi.org/10.1016/B978-0-12-803678-5.00041-2
- Instituto Colombiano Agropecuario (ICA). Resolución 840 de 2011 “Por medio de la cual se establecen medidas sanitarias para la prevención de la brucelosis en las especies bovina, bufalina, caprina, ovina y porcina en Colombia”. Instituto Colombiano Agropecuario, Bogotá, Colombia. 2011. http://www.ica.gov.co/Normatividad/Normas-Ica/Resoluciones-Oficinas-Nacionales/RESOLUCIONES-DEROGADAS/RESOLUCION-840-DE-2011.aspx. Accessed 7 March 2017
- Lindahl-Rajala, E., Hoffman, T., Fretin, D., Godfroid, J., Sattorov, N., Boqvist, S., Lundkvist, Å and Magnusson, U., 2017. Detection and characterization of Brucella spp. in bovine milk in small-scale urban and peri-urban farming in Tajikistan, PLoS Neglected Tropical Diseases, 11, e0005367. doi: https://doi.org/10.1371/journal.pntd.0005367 CrossRefPubMedPubMedCentralGoogle Scholar
- Ministerio de Agricultura y Desarrollo Rural (MADR). Informe de rendición públicas de cuentas, Colombia. 2014. https://www.minagricultura.gov.co/Documents/Informe_2013_2014_Final.pdf. Accessed 7 March 2017
- OIE, 2016. The World Organization for Animal Health. Manual of Diagnostic Tests and Vaccines for Terrestrial Animals. 2016. Chapter 2.1.4. Brucellosis (Brucella abortus, B. melitensis and B. suis) (Infection with Brucella abortus, B. melitensis and B. suis), version adopted in May 2016. (OIE, Paris), 1–44. http://www.oie.int/es/normas-internacionales/manual-terrestre/. Access date 7 March 2017
- Quantum GIS Development Team, 2017. Quantum GIS geographic information system, open source geospatial foundation project. http://qgis.osgeo.org
- Racloz, V., Schelling, E., Chitnis, N., Roth, F. and Zinsstag, J., 2013. Persistence of brucellosis in pastoral systems, Revue scientifique et technique (International Office of Epizootics), 32, 61–70Google Scholar