ToRCH “co-infections” are associated with increased risk of abortion in pregnant women

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  • Sima Rasti
    Department of Parasitology Faculty of Medicine Kashan University of Medical Sciences Kashan Iran
  • Fatemeh Sadat Ghasemi
    Department of Parasitology Faculty of Medicine Kashan University of Medical Sciences Kashan Iran
  • Amir Abdoli
    Department of Parasitology Faculty of Medicine Kashan University of Medical Sciences Kashan Iran
  • Ahmad Piroozmand
    Department of Microbiology and Immunology Faculty of Medicine Kashan University of Medical Sciences Kashan Iran
  • Seyed Gholam Abbas Mousavi
    Department of Statistics and Public Health Faculty of Health Kashan University of Medical Sciences Kashan Iran
  • Zohreh Fakhrie‐Kashan
    Department of Parasitology Faculty of Medicine Kashan University of Medical Sciences Kashan Iran

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  • <scp>ToRCH</scp> “co‐infections” are associated with increased risk of abortion in pregnant women

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Abstract ToRCH infections (toxoplasmosis, rubella, cytomegalovirus and Herpes simplex virus) have long been known to be associated with bad obstetric outcomes. However, little information is available about the impact of ToRCH co-infections on the outcome of pregnancy. Hence, we tested the IgG and IgM antibodies to Toxoplasma gondii, Rubella, Cytomegalovirus and Herpes Simplex Virus among 81 pregnant women with abortion (case group) and 98 pregnant women with normal delivery (control group). In the single-infection model, only CMV-IgM seropositivity was significantly increased in case than control group (25.9% in case and 12.2 % in control, OR = 2.5, P = 0.019). In the co-infection model, 14 patterns were recognized, but two patterns were significantly increased in the case than the control group. Co-infection of T. gondii IgG + CMV IgM was 9.1-fold increased in the case than the control group (8.6% in the case and 1% in control, OR = 9.1; P = 0.024). Also, co-infection of T. gondii IgG + HSV IgG + CMV IgM was 7.7-fold increased in case than the control group (7.4% in case and 1 % in control, OR = 7.7; P = 0.04). Although the OR of other co-infections was higher in the case than the control group, the difference was not statistically significant. These findings indicate that ToRCH co-infections are associated with increased risk of abortion than single infection. Hence, the rates of co-infections should be considered in prenatal screening of ToRCH infections.

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