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  • Title: Hepatitis C virus infection: other biological fluids than blood may be responsible for intrafamilial spread.
    Author: Mastromatteo AM, Rapaccini GL, Pompili M, Ursino S, Romano-Spica V, Gasbarrini G, Vanini G.
    Journal: Hepatogastroenterology; 2001; 48(37):193-6. PubMed ID: 11268963.
    Abstract:
    BACKGROUND/AIMS: Several epidemiological studies have shown the existence of other routes of transmission of the hepatitis C virus besides the parenteral one, but the mechanisms involved are not yet understood. The general aim of this study was to evaluate the prevalence of hepatitis C virus infection in family contacts of infected patients and to analyze the possible risk factors and alternative transmission routes. METHODOLOGY: One hundred and thirty-eight relatives of 45 patients (index cases) affected by C virus-related chronic hepatitis were studied. The relatives were 45 spouses, 89 children and 4 cohabitants who underwent detection of serum anti-HCV antibodies; the anti-HCV-positive subjects were tested for serum HCV-RNA. The index cases, all the spouses and only other infected relatives were tested for the presence of HCV-RNA in saliva RESULTS: Antibodies to hepatitis C virus were detected in 5.7% of the family members while 11.1% of the analyzed spouses were serum HCV-RNA-positive. HCV-RNA was found in 44% of the examined saliva and 39% of these were found serum HCV-RNA-negative. The prevalence of hepatitis C virus among household contacts, excluding cases with previous parenteral exposure, was 3.6%. CONCLUSIONS: The epidemiological data on the intrafamilial spread of hepatitis C virus may be underestimated owing to the existence of infected relatives serum-negative but saliva-positive for the presence of the virus. The whole of these observations suggests a possible role of biological fluids in intrafamilial spread of hepatitis C virus.
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