Circovirus Hepatitis in Immunocompromised Patient, Switzerland

Area of Science:

• Virology
• Hepatology
• Immunology

Background:

• Hepatitis can arise from various causes, including viral infections.
• Immunocompromised individuals are susceptible to opportunistic infections.
• Circoviruses are typically known to infect animals, not humans.

Observation:

• A novel circovirus, designated human circovirus 1 (HCirV-1), was identified.
• The virus was detected in a 66-year-old immunocompromised female patient.
• The patient presented with sudden onset of self-limiting hepatitis.

Findings:

• HCirV-1 transcripts were identified in the patient's hepatocytes.
• The HCirV-1 genome was detected long-term in the patient's blood, stool, and urine.
• This indicates persistent viral presence and shedding.

Implications:

• HCirV-1 is identified as an emerging human pathogen.
• The virus demonstrates persistence in susceptible hosts.
• Further research is needed to understand HCirV-1's pathogenesis and transmission.