Table 4 presents the seropositivity of the diseases analyzed and correlations between the presence of antibodies for toxoplasmosis (IgG/IgM) and other infectious diseases in pregnant women, using Spearman’s correlation coefficient (rho) and the respective p-values to assess the statistical significance of these correlations among pregnant women who received prenatal care in 17 Basic Health Units (BHU) in Araçatuba/SP, Brazil. The gene discussed is CD40LG; the disease is infectious disease.