Prevalence of Salmonella contamination in consumed eggs in Iran: A systematic review and meta-analysis study on published studies from 1996 to 2018

Vet World Vol.13 December-2020 Article-20

Research Article

Veterinary World, 13(12): 2743-2751

https://doi.org/10.14202/vetworld.2020.2743-2751

Behnam Hosseininezhad¹, Enayat Berizi¹, Marzieh Nader¹, Seyed Mohammad Mazloomi¹, Saeid Hosseinzadeh², Laya Ebrahimi², and Morteza Zare¹

1. Nutrition Research Center, Department of Food Hygiene and Quality Control, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.
2. Department of Food Hygiene and Public Health, School of Veterinary Medicine, Shiraz University, Shiraz, Iran.

Background and Aim: Food poisoning caused by Salmonella is among the most common gastrointestinal discomfort resulted from egg consumption which can produce various syndromes. The present study is a systematic review and metaanalysis investigation on the published studies about the prevalence of Salmonella contamination in the consumed eggs in Iran.

Materials and Methods: The data were collected and analyzed from four international search databases, including PubMed, Scopus, Science Direct, and Google Scholar and four Iranian databases comprising SID, MagIran, Civilica, and IranDoc. After searching all the databases, 303 articles were found, from which 31 articles were included in the final analysis.

Results: According to the data analysis, the highest rate of contamination was belonged to the industrial eggs (7.49%), however, the prevalence rate was reported 13.61% in the eggshell part. The overall prevalence of Salmonella contamination in consumed eggs of Iran using culture of microbial, molecular, molecular-serological, culture-molecular, cultureserological, and culture -molecular-serological methods was obtained 11.33%, 5.52%, 0.37%, 1.91%, 5.52%, and 0.73%, respectively. Prevalence in the 21 geographical areas, where studies have been conducted, ranged from 0% (Zahedan) to 29.06% (Tabriz). The studies have also showed that eight different serotypes were among the major cause of Salmonella contamination in eggs. The most common Salmonella serotype was Salmonella Enteritidis and the highest diversity in Salmonella contaminant serotypes was recorded in Talesh (including S. Enteritidis, Salmonella Gallinarum, Salmonella Virchow, and Salmonella Newport).

Conclusion: Results of this study revealed the high prevalence of Salmonella contamination in eggs, in Iran. Therefore, disinfection and cleaning bed, cleaning of equipment and supplies, and proper maintenance temperature and humidity of the eggs are recommended. In addition, proper personal hygiene and prohibition of consuming raw egg products are essential. Keywords: eggs, Iran, Salmonella, systematic review and meta-analysis.

Keywords: eggs, Iran, Salmonella, systematic review and meta-analysis.

How to cite this article: Hosseininezhad B, Berizi E, Nader M, Mazloomi SM, Hosseinzadeh S, Ebrahimi L, Zare M (2020) Prevalence of Salmonella contamination in consumed eggs in Iran: A systematic review and meta-analysis study on published studies from 1996 to 2018, Veterinary World, 13(12): 2743-2751.

Received: 19-07-2020 Accepted: 09-11-2020 Published online: 22-12-2020

Corresponding author: Enayat Berizi E-mail: eberizi@sums.ac.ir

DOI: 10.14202/vetworld.2020.2743-2751

Copyright: Hosseininezhad, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.