In utero Epstein-Barr virus (infectious mononucleosis) infection

Area of Science:

• Virology
• Immunology
• Pediatrics

Background:

• Epstein-Barr virus (EBV) is a common human herpesvirus.
• Congenital EBV infection is rare and its effects are not well-documented.

Observation:

• A male infant presented with multiple congenital anomalies including micrognathia, cryptorchidism, and cataracts.
• The infant also exhibited hypotonia, thrombocytopenia, persistent monocytosis, proteinuria, and metaphysitis at birth.

Findings:

• Infant's lymphocytes were Epstein-Barr nuclear antigen (EBNA) positive and persisted in culture for three months.
• Antibodies to early antigen (anti-EA), IgM-viral capsid (anti-VCA), and EBNA (anti-EBNA) were detected at 22 days of age.
• Other infectious causes for the infant's syndrome were ruled out.

Implications:

• This case suggests a potential link between in utero EBV infection and a spectrum of congenital anomalies and neonatal complications.
• Further research is needed to understand the pathogenesis and long-term outcomes of congenital EBV infection.