Related Experiment Video
Updated: Oct 13, 2026

Obtaining Highly Purified Toxoplasma gondii Oocysts by a Discontinuous Cesium Chloride Gradient
Published on: November 3, 2009
What is known about the prevention of congenital toxoplasmosis?
D Jeannel1, D Costagliola, G Niel
1Department of Medical Statistics, Gustave Roussy Institute, Villejuif, France.
The French programme for the prevention of congenital toxoplasmosis consists of the diagnosis and treatment with spiramycin of acute infections during pregnancy and monthly follow-up of all identified seronegative women. The major flaw is that the efficacy of spiramycin in preventing contamination of the fetus, or at least in reducing the extent of the infection, has never been evaluated in a randomised placebo-controlled clinical trial. Its evaluation would require the follow-up of children born to mothers contaminated during pregnancy for more than 6 months, a goal that is difficult to obtain in current practice. The cost of the programme depends largely on the proportion of non-immune women of childbearing age. Since the modes of contamination are known and are linked to living habits, it should be possible to reduce the risk of infection during pregnancy by adequate health education. This approach is still to be evaluated.
The French programme for the prevention of congenital toxoplasmosis consists of the diagnosis and treatment with spiramycin of acute infections during pregnancy and monthly follow-up of all identified seronegative women. The major flaw is that the efficacy of spiramycin in preventing contamination of the fetus, or at least in reducing the extent of the infection, has never been evaluated in a randomised placebo-controlled clinical trial. Its evaluation would require the follow-up of children born to mothers contaminated during pregnancy for more than 6 months, a goal that is difficult to obtain in current practice. The cost of the programme depends largely on the proportion of non-immune women of childbearing age. Since the modes of contamination are known and are linked to living habits, it should be possible to reduce the risk of infection during pregnancy by adequate health education. This approach is still to be evaluated.
More Related Videos
11:21Forward Genetics Screens Using Macrophages to Identify Toxoplasma gondii Genes Important for Resistance to IFN-γ-Dependent Cell Autonomous Immunity
Published on: March 12, 2015
11:37QTL Mapping and CRISPR/Cas9 Editing to Identify a Drug Resistance Gene in Toxoplasma gondii
Published on: June 22, 2017
Related Concept Videos
Teratogenicity
Sexually Transmitted Infections
Rocky Mountain Spotted Fever
Cytomegalovirus Disease
Toxoplasmosis
American Trypanosomiasis