Prevalence of Toxoplasma gondii infection in antenatal population in Menoufia governorate, Egypt

Knowledge of the prevalence of Toxoplasma gondii infection in pregnant women would be a valuable approach for planning appropriate preventive strategies. However, no enough data currently exist as to the magnitude of T. gondii infection among pregnant women in Egypt. In view of paucity of reports on this issue, the current cross-sectional study aimed to determine the rate of T. gondii infection and maternal-fetal transmission in antenatal population in Menoufia governorate, Egypt. Out of 323 pregnant women who were screened for Toxoplasma-specific IgG and IgM antibodies with ELFA, 218 samples were IgG seropositive, of which, 9 samples were IgM seropositive. Therefore, seropositivity rates of 67.5% (95% CI: 62.39%, 72.61%), and 2.8% (95% CI: 1%, 4.6%) for IgG and IgM, respectively were found. Analysis of serological patterns revealed that a large proportion of subjects were immune to Toxoplasma infection (IgG+/IgM-), as prevalence of chronic infection was 64.7% (209 cases), and 32.5% of cases were susceptible to primary infection (IgG-/IgM-). Meanwhile, the rate of probable acute Toxoplasma infection (IgG+/IgM+) was 2.8%, with one case (0.3%) confirmed for recent infection, as she had low avidity index with positive amniotic fluid analysis with both PCR and mouse inoculation. Significant relations were seen between Toxoplasma-specific IgG and knowledge about transmission modes, consumption of milk/milk products and unwashed raw vegetable/fruit, hand hygiene, contact with soil and farm animals. In conclusion, we reported high prevalence for T. gondii infection among antenatal population in Menoufia governorate. Thus, the susceptibility for toxoplasmosis is relatively low. Sources of infection revealed herein might represent potential threats for primary infection in seronegative women. Accordingly, there is urgent need for implementation of health education programs as an appropriate approach for prevention. (C) 2012 Elsevier B.V. All rights reserved.