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• W4449372 abstract "Determine the risk factors in blood donors with anti hepatitis C antibodies (anti-HCV ab) possible liver involvement and evaluation of their infectious potential by a search for viral RNA in blood.Between July 1990 and October 1991, 19,632 blood donors were screened for hepatitis C. Antibodies to HCV were detected in 74 donors (2nd generation ELISA, Abbott). We evaluated the risk factors, determined ALAT levels and looked for circulating RNA virus by amplification of the non-coding region of the viral genome (RTPCR) in 68 of these 74 donors screened. A control was chosen arbitrarily from 103 donors with high ALAT levels, but with no antibodies to HCV nor detectable circulating viral DNA.The prevalence of anti-HCV ab in blood donors in 0.37%. No risk factor was found in 29 donors (43%). Parenteral exposure (former i.v. drug addiction and history of transfusions) was found to be the mode of transmission of hepatitis C in 23 donors (34%). History of NANB jaundice (non-post transfusion) was reported in 1 donor (1%). The remaining 15 donors (22%) were found to have minor risk factors - either isolated or in combination (exposure, tatoos, multiple sexual partners). Former i.v. drug addiction (p = 0.0000006) as well as a history of transfusions (p = 0.0071) are significantly more frequent in the group of donors with antibodies to HCV. None of the 35 sexual partners of the tested donors proved to be positive. 21 donors (30%) had high ALAT (+2 SD). Viral RNA was detected in blood of 26 donors (38%). The proportion of cases with positive viral RNA was 61% if only those donors with high ALAT levels were taken into consideration (13 positive of 21).Risk factors were found in 39 donors (57%) with antibodies to HCV. History of parenteral exposure was found to be significantly more frequent than in the control group (p = 0.0000054). Sexual transmission within couples was not demonstrated in the population tested. A positive PCR test is a probable indicator of a continuous viral replication and reflects a possible chronic hepatic involvement as well as a potential infectivity. This test is positive in at least 38% of donors with antibodies to HCV and in more than 60% of those who, in addition, have high ALAT levels." @default.
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• W4449372 date "1993-01-23" @default.
• W4449372 modified "2023-09-27" @default.
• W4449372 title "[ALAT and viral RNA as risk factors in 68 blood donors with anti-hepatitis C antibodies]." @default.
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