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Prevalence and serotype diversity of Salmonella in apparently healthy cattle : systematic review and meta-analysis of published studies, 2000–2017

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Abstract
Salmonellosis is a leading cause of foodborne illnesses in humans with cattle being one of the reservoirs for Salmonella. We estimated a pooled prevalence of Salmonella in apparently healthy cattle and examined serotype diversity through systematic review and meta-analysis of studies published between 2000 and 2017. Peer reviewed publications reporting the prevalence of Salmonella in cattle were searched through five electronic databases (PubMed, Google scholar, Agricola, Scopus, CAB direct) and through manual search. We obtained 71 publications with 75 datasets consisting a total of 52,766 animals examined and 5,010 Salmonella positive cattle from 29 countries in six continents (except from Antarctica). Pooled prevalence of Salmonella in cattle was 9% (95% confidence interval: 7-11%). Significantly high heterogeneity (I-2 = 98.7%, P < 0.01) was observed among all studies as well as within continents. Prevalence varied from 2% (Europe) to 16% (North America). Overall, 143 different serotypes were reported with the most diverse serotypes being reported from Africa (76 different serotypes) followed by North America (49 serotypes). The 10 most frequently reported serotypes (Montevideo, Typhimurium, Kentucky, Meleagridis, Anatum, Cerro, Mbandaka, Muenster, Newport, and Senftenberg) accounted for 65% of the isolates for which specific serotype information was reported. Salmonella Montevideo and S. Dublin are the most frequently reported serotypes in North America and Europe, respectively, while S. Typhimurium was the most frequent in Africa, Asia and Australasia. Our results indicated variability both in the prevalence and serotype diversity of Salmonella in cattle across continents. Although all Salmonella serotypes are potentially pathogenic to humans, five (Montevideo, Typhimurium, Anatum, Mbandaka, and Newport) of the top 10 serotypes identified in this study are among the serotypes most commonly associated with clinical illnesses in humans.
Keywords
Salmonella, cattle, prevalence, serotypes, systematic review, meta-analysis, ESCHERICHIA-COLI O157, BEEF-CATTLE, FOODBORNE INFECTIONS, FEEDLOT CATTLE, GLOBAL BURDEN, DAIRY FARMS, DISEASE, CAMPYLOBACTER, MONTEVIDEO, OUTBREAK

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MLA
Desissa Gutema, Fanta et al. “Prevalence and Serotype Diversity of Salmonella in Apparently Healthy Cattle : Systematic Review and Meta-analysis of Published Studies, 2000–2017.” FRONTIERS IN VETERINARY SCIENCE 6 (2019): n. pag. Print.
APA
Desissa Gutema, F., Agga, G. E., Abdi, R. D., De Zutter, L., Duchateau, L., & Gabriël, S. (2019). Prevalence and serotype diversity of Salmonella in apparently healthy cattle : systematic review and meta-analysis of published studies, 2000–2017. FRONTIERS IN VETERINARY SCIENCE, 6.
Chicago author-date
Desissa Gutema, Fanta, Getahun E Agga, Reta D Abdi, Lieven De Zutter, Luc Duchateau, and Sarah Gabriël. 2019. “Prevalence and Serotype Diversity of Salmonella in Apparently Healthy Cattle : Systematic Review and Meta-analysis of Published Studies, 2000–2017.” Frontiers in Veterinary Science 6.
Chicago author-date (all authors)
Desissa Gutema, Fanta, Getahun E Agga, Reta D Abdi, Lieven De Zutter, Luc Duchateau, and Sarah Gabriël. 2019. “Prevalence and Serotype Diversity of Salmonella in Apparently Healthy Cattle : Systematic Review and Meta-analysis of Published Studies, 2000–2017.” Frontiers in Veterinary Science 6.
Vancouver
1.
Desissa Gutema F, Agga GE, Abdi RD, De Zutter L, Duchateau L, Gabriël S. Prevalence and serotype diversity of Salmonella in apparently healthy cattle : systematic review and meta-analysis of published studies, 2000–2017. FRONTIERS IN VETERINARY SCIENCE. 2019;6.
IEEE
[1]
F. Desissa Gutema, G. E. Agga, R. D. Abdi, L. De Zutter, L. Duchateau, and S. Gabriël, “Prevalence and serotype diversity of Salmonella in apparently healthy cattle : systematic review and meta-analysis of published studies, 2000–2017,” FRONTIERS IN VETERINARY SCIENCE, vol. 6, 2019.
@article{8621150,
  abstract     = {Salmonellosis is a leading cause of foodborne illnesses in humans with cattle being one of the reservoirs for Salmonella. We estimated a pooled prevalence of Salmonella in apparently healthy cattle and examined serotype diversity through systematic review and meta-analysis of studies published between 2000 and 2017. Peer reviewed publications reporting the prevalence of Salmonella in cattle were searched through five electronic databases (PubMed, Google scholar, Agricola, Scopus, CAB direct) and through manual search. We obtained 71 publications with 75 datasets consisting a total of 52,766 animals examined and 5,010 Salmonella positive cattle from 29 countries in six continents (except from Antarctica). Pooled prevalence of Salmonella in cattle was 9% (95% confidence interval: 7-11%). Significantly high heterogeneity (I-2 = 98.7%, P < 0.01) was observed among all studies as well as within continents. Prevalence varied from 2% (Europe) to 16% (North America). Overall, 143 different serotypes were reported with the most diverse serotypes being reported from Africa (76 different serotypes) followed by North America (49 serotypes). The 10 most frequently reported serotypes (Montevideo, Typhimurium, Kentucky, Meleagridis, Anatum, Cerro, Mbandaka, Muenster, Newport, and Senftenberg) accounted for 65% of the isolates for which specific serotype information was reported. Salmonella Montevideo and S. Dublin are the most frequently reported serotypes in North America and Europe, respectively, while S. Typhimurium was the most frequent in Africa, Asia and Australasia. Our results indicated variability both in the prevalence and serotype diversity of Salmonella in cattle across continents. Although all Salmonella serotypes are potentially pathogenic to humans, five (Montevideo, Typhimurium, Anatum, Mbandaka, and Newport) of the top 10 serotypes identified in this study are among the serotypes most commonly associated with clinical illnesses in humans.},
  articleno    = {102},
  author       = {Desissa Gutema, Fanta and Agga, Getahun E and Abdi, Reta D and De Zutter, Lieven and Duchateau, Luc and Gabriël, Sarah},
  issn         = {2297-1769},
  journal      = {FRONTIERS IN VETERINARY SCIENCE},
  keywords     = {Salmonella,cattle,prevalence,serotypes,systematic review,meta-analysis,ESCHERICHIA-COLI O157,BEEF-CATTLE,FOODBORNE INFECTIONS,FEEDLOT CATTLE,GLOBAL BURDEN,DAIRY FARMS,DISEASE,CAMPYLOBACTER,MONTEVIDEO,OUTBREAK},
  language     = {eng},
  pages        = {11},
  title        = {Prevalence and serotype diversity of Salmonella in apparently healthy cattle : systematic review and meta-analysis of published studies, 2000–2017},
  url          = {http://dx.doi.org/10.3389/fvets.2019.00102},
  volume       = {6},
  year         = {2019},
}

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