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Risk factors for sporadic toxoplasmosis: a systematic review and meta-analysis

2020Journal article Open access
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dc.contributor.authorThebault, Anne
dc.contributor.authorKooh, Pauline
dc.contributor.authorCadavez, Vasco
dc.contributor.authorGonzales-Barron, Ursula
dc.contributor.authorVillena, Isabelle
dc.date.accessioned2018-02-19T10:00:00Z
dc.date.accessioned2021-02-27T17:59:45Z
dc.date.available2018-01-19T10:00:00Z
dc.date.available2021-02-27T17:59:45Z
dc.date.issued2020
dc.description.abstractToxoplasmosis is considered as the most prevalent parasitic zoonotic infection worldwide. The parasitic cycle is mostly known, but the relative contribution of different sources and pathways of transmission was not previously studied by a meta-analysis. A systematic review and a meta-analysis of case-control, cohort, and cross-sectional studies were performed to determine the main risk factors associated with sporadic Toxoplasma infection. Suitable scientific articles were identified through a systematic literature search and subjected to a methodological quality assessment. Mixed-effects meta-analysis models were adjusted by population type – children, mixed population, and pregnant women – to appropriate data partitions. 187 primary studies passed the quality assessment stage, investigating risk factors for sporadic infection with Toxoplasma gondii conducted between 1983 and 2016. Cases were defined by serology. The meta-analysis of Toxoplasma sporadic infections revealed the significance of transmission by environmental factors such as contact with soil and contact with animals, in particular cats. The consumption of raw or undercooked meat and unwashed vegetables significantly increased the odds of acquiring the disease. Shellfish and raw milk were identified as significant sources of toxoplasmosis. Almost all meat categories were identified as risk factors: pork, poultry, beef, processed meat, lamb, and game meat. Contaminated drinking water may play a role in the acquisition of infection. Moreover, the lack of hygiene in preparing food was identified as a risk factor. A significant risk factor for pregnant women is traveling abroad. Lastly, blood transfusion (in pregnant women) and immunocompromised conditions were found associated with positive serology. The broad definition of exposures and the use of serology for the case definition are the main limitations for the interpretation of the results of this meta-analysis. The transmission pathways require further investigations using longitudinal studies and subtyping approaches.en_EN
dc.description.sponsorshipThe authors would like to thank ANSES staff and the members of the ANSES Working Group on Source Attribution of Foodborne Diseases: Moez Sanaa, Laurence Watier, Jean Christophe Augustin, Fr´ed´eric Carlin, Julie David, Philippe Fravalo, Laurent Guillier, Nathalie Jourdan-Da Silva, Alexandre Leclercq, Lapo Mughini-Gras, Nicole Pavio. U. Gonzales-Barron and V. Cadavez are grateful to the Foundation for Science and Technology (FCT, Portugal) and FEDER under Programme PT2020 for the financial support to CIMO (UID/AGR/00690/2019). U. Gonzales-Barron acknowledges the national funding by FCT, P.I., through the Institutional Scientific Employment Program contract.
dc.description.versioninfo:eu-repo/semantics/publishedVersionen_EN
dc.identifier.citationThebault, Anne; Kooh, Pauline; Cadavez, Vasco; Gonzales-Barron, Ursula; Villena, Isabelle (2020). Risk factors for sporadic toxoplasmosis: a systematic review and meta-analysis. Microbial Risk Analysis. ISSN 2352-3522. p. 1-12en_EN
dc.identifier.doi10.1016/j.mran.2020.100133en_EN
dc.identifier.urihttp://hdl.handle.net/10198/23429
dc.language.isoeng
dc.peerreviewedyesen_EN
dc.relationMountain Research Centre
dc.subjectCase-controlen_EN
dc.subjectCohort studiesen_EN
dc.subjectOdds-ratioen_EN
dc.subjectResearch synthesisen_EN
dc.subjectToxoplasmaen_EN
dc.titleRisk factors for sporadic toxoplasmosis: a systematic review and meta-analysisen_EN
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMountain Research Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FAGR%2F00690%2F2019/PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameCadavez
person.familyNameGonzales-Barron
person.givenNameVasco
person.givenNameUrsula
person.identifierR-000-HDG
person.identifier.ciencia-id441B-01AB-A12E
person.identifier.ciencia-id0813-C319-B62A
person.identifier.orcid0000-0002-3077-7414
person.identifier.orcid0000-0002-8462-9775
person.identifier.ridA-3958-2010
person.identifier.scopus-author-id9039121900
person.identifier.scopus-author-id9435483700
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccessen_EN
rcaap.typearticleen_EN
relation.isAuthorOfPublication57b410e9-f6b7-42ff-ab3d-b526278715eb
relation.isAuthorOfPublication17c6b98f-4fb5-41d3-839a-6f77ec70021a
relation.isAuthorOfPublication.latestForDiscovery57b410e9-f6b7-42ff-ab3d-b526278715eb
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relation.isProjectOfPublication.latestForDiscoveryd6683ba1-d253-48e4-968e-35106ce7b750

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