scholarly journals Serological, epidemiological and molecular aspects of hepatitis C virus infection in a population from Londrina, PR, Brazil, 2001-2002

2004 ◽  
Vol 46 (6) ◽  
pp. 303-308 ◽  
Author(s):  
Ingridt Hildegard Vogler ◽  
Anna Nishiya ◽  
Helena Kaminami Morimoto ◽  
Edna Maria Vissoci Reiche ◽  
André Luiz Bortoliero ◽  
...  
Keyword(s):  
Risk Factors ◽  
Chronic Hepatitis ◽  
Risk Factor ◽  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Enzyme Immunoassay ◽  
Blood Donors ◽  
Hcv Infection ◽  
Factors Associated ◽  
Molecular Aspects

Serological, epidemiological and molecular aspects of hepatitis C virus (HCV) infection were evaluated in 183 subjects from Londrina, Paraná, Brazil, and adjacent areas. Serum samples which tested anti-HCV positive by microparticle enzyme immunoassay (MEIA) obtained from eight patients with chronic hepatitis C, 48 blood donors, and 127 patients infected with the human immunodeficiency virus (HIV) were submitted to another enzyme immunoassay (ELISA) and to the polymerase chain reaction (PCR). About 78.7% of samples were also reactive by ELISA, with the greater proportion (70.8%) of discordant results verified among blood donors. A similar finding was observed for HCV-RNA detection by PCR, with 111/165 (67.3%) positive samples, with higher rates among HIV-positive subjects and patients with chronic hepatitis than among blood donors. Sixty-one PCR-positive samples were submitted to HCV genotyping, with 77.1, 21.3 and 1.6% of the samples identified as types 1, 3 and 2, respectively. Finally, analysis of some risk factors associated with HCV infection showed that intravenous drug use was the most common risk factor among HIV/HCV co-infected patients, while blood transfusion was the most important risk factor in the group without HIV infection. The present study contributed to the knowledge regarding risk factors associated with HCV infection and the distribution of HCV genotypes in the population evaluated.

scholarly journals Risk factors for hepatitis C virus infection. A case-control study of blood donors in the Trent Region (UK)

1994 ◽  
Vol 112 (3) ◽  
pp. 595-601 ◽  
Author(s):  
K. R. Neal ◽  
D. A. Jones ◽  
D. Killey ◽  
V. James
Keyword(s):  
Risk Factors ◽  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Blood Transfusion ◽  
Blood Donors ◽  
Case Control Study ◽  
Case Control ◽  
Hcv Infection ◽  
History Of ◽  
Control Study

SUMMARYThe introduction of screening for hepatitis C virus (HCV) by the National Blood Transfusion Service identified donors who had acquired HCV infection. We undertook a case-control study amongst blood donors in the Trent Region to determine risks for HCV infection. A total of 74 blood donors confirmed positive for hepatitis C infection and 150 age, sex and donor venue matched controls were included in the study. Fifty-three percent of hepatitis C infected blood donors reported previous use of injected drugs compared to no controls; relative risk (RR) not estimatable (lower limit 95% CI = 20). Other risk factors were a history of: receipt of a blood transfusion or blood products RR = 3·6 (95% CI 1·5–8·3), having been a ‘health care worker’ RR = 2·8 (95% CI 1·1–7·6), tattooing RR = 3·3 (95% CI 1·2–8·7), and an association with having been born abroad RR = 3·2 (95% CI 1·1–9·5). No risk was shown for a history of multiple sexual partners, ear piercing or acupuncture. Injecting drug use explains more than 50% of hepatitis C infections in blood donors, a group who are less likely to have injected drugs than the general population.

PREVALENCE AND RISK FACTORS OF HEPATITIS C VIRUS INFECTION IN HAEMODIALYSIS PATIENTS: TESTING ANTIBODIES, RNA AND GENOTYPES

2015 ◽  
Vol 77 (25) ◽  
Author(s):  
Waqar Al-Kubaisy ◽  
Nor Aini Mohd Noor ◽  
Nik Shamsidah Nik Ibrahim ◽  
Usama Al-Nasirie
Keyword(s):  
Risk Factors ◽  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Blood Transfusion ◽  
Enzyme Immunoassay ◽  
Significant Risk ◽  
Hcv Infection ◽  
Hcv Rna ◽  
Seropositive Rate ◽  
Hcv Transmission

Hepatitis C virus (HCV) infection is an important global public health problem affecting approximately 180 million people. Multiple risk factors are associated with HCV transmission among haemodialysis (HD) patients leading to an increased risk for liver-related mortality. Patients undergoing HD may show a decreased humoral and cellular immunity, which lowers the sensitivity of the HCV antibodies (Abs) test resulting in false negative antibody test, thus requiring HCV RNA testing. Our study is to determine the prevalence of HCV markers (antibody RNA and genotype) and risk factors of HCV infection among patients in HD unit in Baghdad. A sample of 54 patients were interviewed. HCV Abs (anti-HCV) was tested using third generation enzyme immunoassay (EIA-3) and immunoblot assay (Lia-Tek III) as screening and confirmatory test respectively. Sera of 46 patients (irrespective to anti-HCV results) were subjected to molecular analysis, using the most developed RT-PCR and DNA Enzyme immunoassay (DEIA) method. Seropositive rate of anti-HCV and HCV-RNA were (66.6%) and (60.9%) respectively. Anti-HCV seropositive rate was significantly higher in males (77.1%), and history of blood transfusion (85%). Blood transfusion acts as a significant risk for acquiring HCV (OR 44.2, 95% CI 7.6-256.9). Genotype 4 was the most prevalent (33.3%), followed by genotype 1a (25.9%) and genotype 1b (22.2%). We concluded that, the prevalence of HCV among the haemodialysis patients is high. It is significantly related to gender, duration of dialysis and number of blood transfusion. Blood transfusion acts as a significant risk factor. Molecular test for detection for HCV RNA is necessary and proper nosocomial prevention program should be implemented to prevent HCV transmission.

scholarly journals PREVALENCE OF THE HEPATITIS C VIRUS AMONG UNIVERSITY EMPLOYEES IN SÃO PAULO, SOUTHEASTERN BRAZIL: predictive factors and geoprocessing spatial analysis

2015 ◽  
Vol 52 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Cássio Vieira de OLIVEIRA ◽  
Walnei Fernandes BARBOSA ◽  
Liciana Vaz de Arruda SILVEIRA ◽  
Juliana MENEZES ◽  
Flávia Souza MACHADO ◽  
...  
Keyword(s):  
Risk Factors ◽  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Spatial Analysis ◽  
Sao Paulo ◽  
Hcv Infection ◽  
Southeastern Brazil ◽  
São Paulo ◽  
University Employees ◽  
Factors Associated

Background There are limited studies on the prevalence and risk factors associated with hepatitis C virus (HCV) infection. Objective Identify the prevalence and risk factors for HCV infection in university employees of the state of São Paulo, Brazil. Methods Digital serological tests for anti-HCV have been performed in 3153 volunteers. For the application of digital testing was necessary to withdraw a drop of blood through a needlestick. The positive cases were performed for genotyping and RNA. Chi-square and Fisher’s exact test were used, with P-value <0.05 indicating statistical significance. Univariate and multivariate logistic regression were also used. Results Prevalence of anti-HCV was 0.7%. The risk factors associated with HCV infection were: age >40 years, blood transfusion, injectable drugs, inhalable drugs (InDU), injectable Gluconergam®, glass syringes, tattoos, hemodialysis and sexual promiscuity. Age (P=0.01, OR 5.6, CI 1.4 to 22.8), InDU (P<0.0001, OR=96.8, CI 24.1 to 388.2), Gluconergam® (P=0.0009, OR=44.4, CI 4.7 to 412.7) and hemodialysis (P=0.0004, OR=90.1, CI 7.5 – 407.1) were independent predictors. Spatial analysis of the prevalence with socioeconomic indices, Gross Domestic Product and Human Development Index by the geoprocessing technique showed no positive correlation. Conclusions The prevalence of HCV infection was 0.7%. The independent risk factors for HCV infection were age, InDU, Gluconergan® and hemodialysis. There was no spatial correlation of HCV prevalence with local economic factors.

Hepatitis C Virus in Pregnancy: A Systematic Review of the Literature

2020 ◽  
Author(s):  
Alexandra Andes ◽  
Kerry Ellenberg ◽  
Amanda Vakos ◽  
James Collins ◽  
Kimberly Fryer
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Pregnant Women ◽  
Universal Screening ◽  
Demographic Characteristics ◽  
Hcv Infection ◽  
Cochrane Library ◽  
In Pregnancy

Abstract Objective The aim of this study was to systematically review the literature to summarize recent demographic characteristics of hepatitis C virus (HCV) infection during pregnancy and the efficacy of risk-based versus universal screening. Study Design PubMed, EMBASE, and Cochrane Library were searched to identify relevant studies. Studies that recognized hepatitis C as a primary or secondary outcome, with pregnant women as the population and written in English, were included. Studies were excluded if they were abstracts only, written in foreign language, or published prior to 1992. Two researchers independently screened all the studies by titles, abstracts, and full text. Conflicts were settled by a third researcher. Results A total of 698 studies were identified with 78 fitting inclusion criteria. In total, 69 epidemiologic and 9 comparison studies were found. Identified risk factors for HCV infection include intravenous or illicit drug use, sexually transmitted coinfection, high-risk behaviors in the partners, high parity, and history of miscarriages or abortions. Demographic characteristics associated with HCV include non-Hispanic white race, American Indian or Alaskan Native ethnicity, and increasing age. Providers may fail to adequately screen for each risk factor, and up to two-thirds of women with a known risk factor are not screened under current guidelines. Finally, up to 27% of HCV+ women have no identifiable risk factors for infection. Conclusion There is evidence that risk-based screening fails to identify a large proportion of HCV positive women in pregnancy and that pregnant women with HCV risk factors and consistent with current screening guidelines fail to be tested. We urge for the adoption of universal screening to identify these women and offer treatment.

Risk Factors Associated with a High Seroprevalence of Hepatitis C Virus Infection in Egyptian Blood Donors

1993 ◽  
Vol 49 (4) ◽  
pp. 440-447 ◽  
Author(s):  
Medhat A. Darwish ◽  
Rober Edelman ◽  
Malla R. Rao ◽  
Niel T. Constantine ◽  
Tahani A. Raouf ◽  
...  
Keyword(s):  
Risk Factors ◽  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Virus Infection ◽  
Blood Donors ◽  
Hepatitis C Virus Infection ◽  
High Seroprevalence ◽  
Factors Associated
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