TABLE 4.

Geographical distribution of T. gondii GRA6 serotypes

Geographical origin (no. of samples)% (no.) of samples with indicated GRA6 serotype(s)
III/IIIMixedaNDb
Europe (211)50.7 (107)9.5 (20)6.2 (13)33.6 (71)
Africa (89)11.2 (10)31.5 (28)14.6 (13)42.7 (38)
Latin America (155)4.5 (7)45.8 (71)18.1 (28)31.6 (49)
  • a Mixed, serum sample reacted with both peptides.

  • b ND, not determined because serum samples had OD indices that were below the cutoff values. Cutoff values for European samples were 0.088 for GRA6 II and 0.076 for GRA6 I/III, for African samples were 0.111 for GRA6 II and 0.079 for GRA6 I/III, and for Latin American samples were 0.089 for GRA6 II and 0.067 for GRA6 I/III.