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The global seroprevalence of Toxoplasma gondii infection in bovines: a systematic review and meta-analysis

Published online by Cambridge University Press:  30 June 2021

Seyyed Ali Shariatzadeh
Affiliation:
Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran Student Research Committee, Mazandaran University of Medical Science, Sari, Iran
Shahabeddin Sarvi
Affiliation:
Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
Seyed Abdollah Hosseini
Affiliation:
Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
Mehdi Sharif
Affiliation:
Department of Parasitology, School of Medicine, Sari Branch, Islamic Azad University, Sari, Iran
Shirzad Gholami
Affiliation:
Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
Abdol Sattar Pagheh
Affiliation:
Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
Fattaneh Montazeri
Affiliation:
Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modarres University, Tehran, Iran
Tooran Nayeri
Affiliation:
Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran Student Research Committee, Mazandaran University of Medical Science, Sari, Iran
Maryam Nakhaei
Affiliation:
Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran Student Research Committee, Mazandaran University of Medical Science, Sari, Iran
Tahereh Mikaeili Galeh
Affiliation:
Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran Student Research Committee, Mazandaran University of Medical Science, Sari, Iran
Ahmad Daryani*
Affiliation:
Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
*
Author for correspondence: Ahmad Daryani, E-mail: daryanii@yahoo.com

Abstract

Bovines, especially cattle, are considered as one of the main sources of Toxoplasma gondii infection for humans. A more comprehensive understanding of the occurrence of T. gondii is needed to provide a global perspective on the prevalence of T. gondii in bovines. Here, we present the results of the first systematic review and meta-analysis on the global T. gondii seroprevalence in bovines. Six databases (PubMed, ScienceDirect, Web of Science, Scopus, ProQuest and Google Scholar) were comprehensively searched for relevant studies published between 1 January 1967 and 30 May 2019. Among 7691 publications searched, 178 studies (from 50 countries) with 193 datasets were included in the meta-analysis. The global pooled and weighted seroprevalence of T. gondii among bovines was 17.91% [95% confidence interval (CI): 15.32–20.6]. Weighted prevalence based on the host was as follows: cattle 16.94% (95% CI: 14.25–19.81), buffalo 22.26% (95% CI: 16.8–29), yak 23% (95% CI: 14–33) and bison 8.1% (95% CI: 3.9–13.7). Continued monitoring on the status of T. gondii seroprevalence in bovines is essential. Study on the prevalence of T. gondii in the products of bovines such as milk, meat, etc., which are considered as the source of transmission of infection to humans, is recommended.

Type
Review Article
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press

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