In a study involving 14 laboratories supported by the European Community Biomed 2 program, Pinon et al. [55] evaluated immunologic methods for the postnatal diagnosis of congenital toxoplasmosis and compared ELFA with a commercial enzyme immunoassay (EIA) or in-house immunosorbent agglutination assay (ISAGA) for the detection of IgM or IgA. Here, CD40LG is linked to congenital toxoplasmosis.