Congenital Chagas disease: current diagnostics, limitations and future perspectives

Area of Science:

• Infectious Diseases
• Parasitology
• Global Health

Background:

• Congenital transmission of Trypanosoma cruzi (Chagas disease) is a significant global health issue, particularly affecting Latin America and international populations.
• Infected women of child-bearing age in the US and Europe contribute to the international burden of congenital Chagas disease.
• Historically, congenital Chagas disease presented with high neonatal morbidity and mortality.

Purpose of the Study:

• To review recent literature on congenital Chagas disease.
• To focus on the evolving clinical spectrum of the disease.
• To identify and discuss emerging diagnostic tools for congenital Chagas disease.

Main Methods:

• Review of recent scientific literature on congenital Chagas disease.
• Analysis of clinical data and diagnostic advancements.
• Examination of epidemiological trends in congenital Chagas disease.

Main Results:

• Vertical transmission rates of Trypanosoma cruzi range from 5-10% of births from infected mothers.
• Symptomatic neonatal Chagas disease incidence has decreased, with trypanocide treatment showing over 90% efficacy in infants.
• Current screening programs face challenges including complex algorithms, low microscopy sensitivity, and high patient dropout rates.

Conclusions:

• Congenital Chagas disease remains a significant global health burden due to Trypanosoma cruzi.
• Polymerase chain reaction (PCR) and molecular techniques offer high sensitivity for early detection but need optimization for resource-limited settings.
• Novel diagnostic tests show promise but require further validation and field adaptation for widespread use.