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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of vaccination on the apparent prevalence of bovine brucellosis in the state of Tocantins, Brazil

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Author(s):
Vendrame, Fabiano Benitez [1, 2] ; Barbosa, Regina Goncalves [3] ; Ferreira, Fernando [4] ; Amaku, Marcos [4] ; Dias, Ricardo Augusto [4] ; Hildebrand Grisi, Jose Henrique [5] ; Bryan, Marcos Heinemann [4] ; Picao Goncalves, Vitor Salvador [6] ; Baquero, Oswaldo Santos [5] ; Ferreira Neto, Jose Soares [4]
Total Authors: 10
Affiliation:
[1] IDARON, Agenda Def Sanitaria Agrosilvopastoril Estado Ron, Vet, Porto Velho, RO - Brazil
[2] Univ Sao Paulo, Fac Med Vet & Zootecnia, USP, FMVZ, Expt & Appl Epidemiol Zoonoses Program, Sao Paulo, SP - Brazil
[3] Agancia Def Agr Estado Tocantins, ADAPEC, Vet, Palmas, TO - Brazil
[4] Univ Sao Paulo, FMVZ, Sao Paulo, SP - Brazil
[5] Univ Sao Paulo, FMVZ, DVM, Sao Paulo, SP - Brazil
[6] Univ Brasilia, Fac Agron & Med Vet, UNB, FAV, Brasilia, DF - Brazil
Total Affiliations: 6
Document type: Journal article
Source: SEMINA-CIENCIAS AGRARIAS; v. 42, n. 4, p. 2389-2405, JUL-AUG 2021.
Web of Science Citations: 0
Abstract

A cross-sectional study on the epidemiological situation of bovine brucellosis was carried out in the state of Tocantins to evaluate the effectiveness of its vaccination program. The state was divided into five regions, and a predetermined number of farms was randomly selected in each one. Females aged 24 months or older were randomly selected in each farm and diagnosed with brucellosis by serial serology (AAT and 2-ME). A total of 6,846 animals from 756 farms were examined. The prevalence of seropositive herds in the state was 6.42% {[}CI95%: 4.76-8.62], and the prevalence of seropositive animals was 2.21% {[}CI95%: 1.05-4.01]. The prevalence of seropositive herds was homogeneously distributed among regions. The 2002/2003 study estimated the prevalence of seropositive herds in the state to be 21.22% {[}CI95%: 19.33-23.11]. In conclusion, the vaccination program implemented in Tocantins, reaching vaccination coverage above 70% as of 2010, significantly reduced the prevalence of seropositive herds. Thus, continuing the vaccination program in the state is recommended, preferably increasing the quality of the processes involved, from commercialization to inoculation in animals, since immunization remains the most effective means to reduce the prevalence of brucellosis. In addition, animal replacement remains a major risk factor for bovine brucellosis in Tocantins since 20022003; therefore, the state must implement a strong health education program explaining to farmers the importance of testing animals for brucellosis before introducing them into their herds. (AU)

FAPESP's process: 17/50190-1 - Studies to support the decision-making process within the PNCEBT and consequent implementation of public policies in Brazil
Grantee:José Soares Ferreira Neto
Support Opportunities: Research Grants - Research in Public Policies