Hepatitis C virus infection in spouses: sexual transmission or common exposure to the same risk factors?

T Stroffolini1, U Lorenzoni, F Menniti-Ippolito

  • 1Laboratory of Epidemiology, Istituto Superiore di Sanità, Rome, Italy.

Insights

Sexual contact is an unlikely route for hepatitis C virus (HCV) transmission between spouses. Parenteral exposure, particularly sharing glass syringes, significantly increases HCV risk within couples.

Area of Science:

  • Virology
  • Epidemiology
  • Public Health

Background:

  • Hepatitis C virus (HCV) is a significant global health concern.
  • Understanding transmission routes is crucial for prevention strategies.
  • Intrafamilial transmission, particularly between spouses, requires further investigation.

Purpose of the Study:

  • To determine if sexual contact or other exposures are primary routes for HCV transmission between spouses.
  • To identify risk factors associated with HCV infection within married couples.

Main Methods:

  • A study enrolled 311 chronic HCV carriers and their spouses, who were tested for HCV.
  • Parenteral risk factors were compared between couples with one or both partners infected.
  • HCV RNA and genotyping were performed on infected couples.

Main Results:

  • The prevalence of HCV among spouses was 10.3%.
  • HCV-positive spouses reported significantly higher rates of parenteral exposure (e.g., blood transfusions, drug use, shared syringes).
  • Sharing glass syringes was a significant risk factor, especially in couples where both partners were infected.

Conclusions:

  • The low rate of identical HCV genotypes in both partners suggests sexual transmission is infrequent.
  • Parenteral exposure, particularly the sharing of glass syringes, is a major driver of HCV transmission within couples.
  • Public health efforts should focus on preventing parenteral exposure to curb intrafamilial HCV spread.
Abstract

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