Congenital toxoplasmosis

Area of Science:

• Infectious Diseases
• Parasitology
• Maternal-Fetal Medicine

Background:

• Congenital toxoplasmosis arises from transplacental transmission of *Toxoplasma gondii* following maternal infection during pregnancy.
• Prevalence varies, with transmission rates increasing significantly with gestational age at maternal seroconversion.
• Later maternal infections correlate with a lower risk of symptomatic congenital disease at birth.

Purpose of the Study:

• To review the current understanding of congenital toxoplasmosis, including diagnosis, management, and long-term outcomes.
• To highlight the variability in antenatal management strategies across different countries.
• To emphasize the need for ongoing ophthalmological surveillance in infected children.

Main Methods:

• Review of existing literature on congenital toxoplasmosis.
• Analysis of diagnostic methods, including PCR in amniotic fluid.
• Examination of antenatal and postnatal treatment protocols and their reported outcomes.

Main Results:

• Maternal-fetal transmission rates escalate with advancing gestational age.
• Prenatal diagnosis relies on PCR; antenatal treatment protocols (spiramycin, pyrimethamine, sulphonamide) vary and their benefits are debated.
• Postnatal treatment for 12 months is standard, yet chorioretinitis remains a significant long-term complication.

Conclusions:

• Congenital toxoplasmosis diagnosis and management require careful consideration of gestational age and diagnostic test results.
• Antenatal interventions aim to reduce vertical transmission, but their efficacy requires further validation.
• Lifelong ophthalmological monitoring is essential for individuals with congenital toxoplasmosis to detect and manage potential visual impairments.