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Brucellosis awareness and knowledge in communities worldwide: A systematic review and meta-analysis of 79 observational studies

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  • Ning Zhang
  • Hao Zhou
  • De-Sheng Huang
  • Peng Guan

Abstract

Background: Brucellosis is regarded as a major zoonotic infection worldwide. Awareness and knowledge of brucellosis among occupational workers is considered an important aspect of brucellosis control in both humans and animals. The aim of this study was to explore the distributions of the pooled awareness level and the knowledge level of the disease worldwide. Methods: A meta-analysis was carried out to obtain pooled brucellosis awareness levels and knowledge levels of respondents regarding the zoonotic nature of brucellosis, mode of brucellosis transmission, and brucellosis symptoms in animals and humans. The analysis was conducted and reported in accordance with the Preferred Reporting Items for Systematic Review and Meta-analyses guidelines. Results: A total of seventy-nine original articles reporting the brucellosis awareness levels of in populations from 22 countries were assessed. The total pooled awareness level of brucellosis was 55.5%, and the pooled awareness levels regarding the zoonotic nature of brucellosis, mode of brucellosis transmission, signs of human brucellosis and signs of animal brucellosis were 37.6%, 35.9%, 41.6%, and 28.4% respectively. The pooled awareness level was higher than the brucellosis-related knowledge level. Subgroup analyses showed that no obvious differences in brucellosis awareness levels between high-risk populations in Asia and Africa. Health workers (including human health workers and veterinarians) had the greatest overall awareness and knowledge of human brucellosis. The overall awareness levels and knowledge levels of livestock owners (farmers) and herders were higher than those of dairy farmers and abattoir workers. In addition, awareness and knowledge levels were higher among people who were involved in bovine, caprine and ovine animal production or in caprine and ovine animal production than among people who were involved in only bovine animal production. Conclusions: Insufficient awareness and knowledge of brucellosis were observed in the original studies conducted mainly in Asia and Africa. Interventions to improve public knowledge about brucellosis are urgently needed. Author summary: Brucellosis is considered a neglected zoonotic disease that creates a very large obstacle to the development of animal production and is a great threat to human health. High brucellosis awareness and knowledge is critical for the implementation of correct practices and habits and consequently the control and prevention of brucellosis. The aim of this study was to estimate the awareness and knowledge of brucellosis, specifically regarding its zoonotic nature, mode of transmission, and signs in humans and in animals as well as awareness information sources. To this end, a meta-analysis of data from 79 studies was performed. The included studies on the awareness and knowledge of brucellosis were mainly from Africa and Asia. There were no significant differences in the awareness levels of brucellosis among high-risk groups in Asia and Africa. Overall, people’s awareness and knowledge of brucellosis were low and insufficient. Health workers had the highest pooled levels of awareness and knowledge regarding brucellosis. In addition, livestock stock owners (farmers) had notably higher awareness and knowledge levels than dairy farmers and abattoir workers. Neighbors and friends were the most common sources of brucellosis information for farmers. The low and insufficient awareness and knowledge about brucellosis is an obstacle for public health. Raising awareness and increasing detailed knowledge of brucellosis are of great significance for the control of brucellosis and the protection of human health. The potential of the media and health workers in the dissemination of knowledge about the disease needs to be fostered.

Suggested Citation

  • Ning Zhang & Hao Zhou & De-Sheng Huang & Peng Guan, 2019. "Brucellosis awareness and knowledge in communities worldwide: A systematic review and meta-analysis of 79 observational studies," PLOS Neglected Tropical Diseases, Public Library of Science, vol. 13(5), pages 1-20, May.
    • Handle: RePEc:plo:pntd00:0007366
    DOI: 10.1371/journal.pntd.0007366
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    1. Elena Awwad & Osama Awwad & Mohammad Farraj & Tamer Essawi & Kamel Adwan & Assad Manasra & Stelian Baraitareanu & Maria Rodica Gurau & Doina Danes, 2017. "An Investigation Of Brucellosis Knowledge, Attitude And Practice Among Livestock Owners In The West Bank," CBU International Conference Proceedings, ISE Research Institute, vol. 5(0), pages 1042-1047, September.
    2. David Moher & Alessandro Liberati & Jennifer Tetzlaff & Douglas G Altman & The PRISMA Group, 2009. "Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA Statement," PLOS Medicine, Public Library of Science, vol. 6(7), pages 1-6, July.
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    1. Xing-Hua Bai & Cheng Peng & Tao Jiang & Zhu-Min Hu & De-Sheng Huang & Peng Guan, 2019. "Distribution of geographical scale, data aggregation unit and period in the correlation analysis between temperature and incidence of HFRS in mainland China: A systematic review of 27 ecological studi," PLOS Neglected Tropical Diseases, Public Library of Science, vol. 13(8), pages 1-13, August.

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