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

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 betwe...

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Bibliographic Details
Published in:Frontiers in Veterinary Science
Main Authors: Desissa Gutema, Fanta, Agga, Getahun E, Abdi, Reta D, De Zutter, Lieven, Duchateau, Luc, Gabriël, Sarah
Format: Article in Journal/Newspaper
Language:English
Published: 2019
Subjects:
Veterinary Sciences
Biology and Life Sciences
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
Antarc*
Antarctica
Online Access:https://biblio.ugent.be/publication/8621150
http://hdl.handle.net/1854/LU-8621150
https://doi.org/10.3389/fvets.2019.00102
https://biblio.ugent.be/publication/8621150/file/8621152
Description
Summary: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.

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