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[Epidemiology of hepatitis C]
1Dirección de Investigación Biomédica, Fundación Clínica Médica Sur. Puente de Piedra # 150, Col. Toriello Guerra, Deleg. Tlalpan, México, D.F. C. P. 14050. nmendez@medicasur.org.mx
Revista De Gastroenterologia De Mexico
|April 26, 2003
Summary
Sexual contact can transmit Hepatitis C virus (HCV). Mother-to-newborn transmission risk increases with higher viral load, especially in HIV-coinfected mothers.
Area of Science:
- Hepatology
- Virology
- Infectious Diseases
Context:
- Hepatitis C virus (HCV) transmission routes require further elucidation.
- Understanding sexual and perinatal transmission is crucial for public health interventions.
Purpose:
- To review and synthesize evidence on HCV transmission via sexual contact.
- To analyze factors influencing mother-to-newborn (perinatal) HCV transmission.
Summary:
- Sexual transmission of HCV is confirmed, with high HCV RNA homogeneity observed in 99% of monogamous couples without a history of intravenous drug use.
- Perinatal HCV transmission is significantly correlated with maternal viral load; transmission rates reach 36% when maternal HCV RNA levels exceed 10^6 copies/ml.
- HCV perinatal transmission is notably higher in mothers coinfected with human immunodeficiency virus (HIV).
Impact:
- Highlights the risk of sexual transmission, necessitating targeted prevention strategies.
- Identifies maternal viral load as a key predictor for perinatal HCV transmission.
- Underscores the increased vulnerability of HIV-coinfected pregnant individuals to transmitting HCV to their newborns.