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Toxoplasmosis

Toxoplasmosis

Toxoplasmosis, a zoonotic disease caused by the protozoan Toxoplasma gondii, poses significant public health challenges globally due to its high seroprevalence and varied clinical manifestations. As an obligate intracellular parasite, T. gondii can infect all warm-blooded vertebrates, but felids are its only definitive hosts, shedding unsporulated oocysts into the environment. Humans typically acquire the infection through ingestion of tissue cysts in undercooked meat or oocysts from...

Sources of Food Contamination

Sources of Food Contamination

Contamination of food by microbial agents and natural toxins poses significant risks to public health. These hazards can be introduced at various points across the food supply chain, ranging from environmental sources to processing and storage stages. Understanding these contamination pathways is critical for developing strategies to ensure food safety.Seafood is particularly vulnerable to contamination through both environmental exposure and microbial colonization. Toxins from harmful algal...

Teratogenicity

Teratogenicity

The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...

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Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...

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Related Experiment Video

Updated: Jun 28, 2026

Obtaining Highly Purified Toxoplasma gondii Oocysts by a Discontinuous Cesium Chloride Gradient

Obtaining Highly Purified Toxoplasma gondii Oocysts by a Discontinuous Cesium Chloride Gradient

Published on: November 3, 2009

Toxoplasma-safe meat: close to reality?

Aize Kijlstra¹, Erik Jongert

¹Animal Sciences Group, Wageningen UR, PO Box 65, 8200AB Lelystad, The Netherlands. aize.kijlstra@wur.nl

Trends in Parasitology

|October 28, 2008

Summary

Toxoplasmosis remains a neglected disease with limited treatment options. This study explores strategies for a Toxoplasma-safe meat chain to improve prevention and control of this parasitic infection.

Area of Science:

Veterinary Medicine
Food Safety
Parasitology

Background:

Toxoplasmosis, caused by Toxoplasma gondii, is a significant global health concern.
Despite its high disease burden, toxoplasmosis is underreported and lacks effective human vaccines or treatments.
Current prevention strategies are insufficient, necessitating a focus on controlling transmission routes.

Purpose of the Study:

To review and discuss strategies for developing a Toxoplasma-safe meat chain.
To highlight the feasibility of controlling T. gondii in meat products in Western countries.
To address the need for improved prevention of toxoplasmosis.

Main Methods:

Review of existing literature on Toxoplasma gondii transmission and control.
Analysis of food safety practices within the meat production chain.

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3-D Imaging and Analysis of Neurons Infected In Vivo with Toxoplasma gondii

3-D Imaging and Analysis of Neurons Infected In Vivo with Toxoplasma gondii

Published on: December 9, 2014

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Last Updated: Jun 28, 2026

Obtaining Highly Purified Toxoplasma gondii Oocysts by a Discontinuous Cesium Chloride Gradient

Obtaining Highly Purified Toxoplasma gondii Oocysts by a Discontinuous Cesium Chloride Gradient

Published on: November 3, 2009

Toxoplasma gondii Cyst Wall Formation in Activated Bone Marrow-derived Macrophages and Bradyzoite Conditions

Toxoplasma gondii Cyst Wall Formation in Activated Bone Marrow-derived Macrophages and Bradyzoite Conditions

Published on: August 12, 2010

3-D Imaging and Analysis of Neurons Infected In Vivo with Toxoplasma gondii

3-D Imaging and Analysis of Neurons Infected In Vivo with Toxoplasma gondii

Published on: December 9, 2014

Discussion of potential interventions for reducing T. gondii contamination in meat.

Main Results:

Food, soil, and water contamination with oocysts are primary infection routes.
Oocyst contamination control is challenging, but T. gondii control in meat is feasible in Western nations.
Development of a Toxoplasma-safe meat chain is a viable prevention strategy.

Conclusions:

Effective prevention of toxoplasmosis requires a multi-faceted approach, including safer meat production.
Implementing control measures within the meat chain can significantly reduce human exposure to T. gondii.
Further research and implementation of strategies for a Toxoplasma-safe meat supply chain are crucial.