Occult Hepatitis B
Mostrando 1-12 de 31 artigos, teses e dissertações.
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1. Hepatitis B virus infection among oncohematologic disease patients in Central Brazil: prevalence, risk factors and immunization
ABSTRACT Introduction: Carriers of oncohematological diseases are at high risk for hepatitis B virus (HBV) infection. Objective and method: To investigate the epidemiology of HBV infection in Goiânia, Central Brazil, 322 individuals with oncohematological diseases (leukemias, Hodgkin lymphoma and non-Hodgkin lymphoma) were interviewed and blood samples we
Hematol., Transfus. Cell Ther.. Publicado em: 10/10/2019
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2. Detection of occult hepatitis B in serum and oral fluid samples
In occult hepatitis B infection (OBI), hepatitis B virus DNA (HBV DNA) can be detected in serum samples; however, oral fluid collection for detection of HBV DNA has not yet been explored, despite the availability of collection devices. Serum and oral fluid samples from 45 hepatitis B core antibody (anti-HBc)-positive patients were collected for the amplifica
Mem. Inst. Oswaldo Cruz. Publicado em: 2018-01
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3. Detection and molecular characterisation of a diagnosis escape variant associated with occult hepatitis B virus in Brazil
BACKGROUND Many studies have identified mutations in the hepatitis B surface antigen (HBsAg) as important factors limiting the ability of commercial serological assays to detect this viral antigen. However, an association between mutations in the HBsAg gene and the occurrence of occult HBV infection (OBI) in patients has not been established. OBJECTIVES
Mem. Inst. Oswaldo Cruz. Publicado em: 2017-07
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4. Hepatitis B virus infection among institutionalized mentally ill patients in Brazil
ABSTRACT OBJECTIVES: The main objective was to evaluate HBV infection and occult HBV infection (OBI) cases in mentally ill patients based on serological and molecular profiles. MATERIAL AND METHODS: Serum samples of 333 long-stay mentally ill patients were tested for the prevalence of HBV markers by serological (ELISA) and molecular (PCR) assays. The PCR
Braz J Infect Dis. Publicado em: 2015-12
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5. Occult HBV infection status among chronic hepatitis C and hemodialysis patients in Northeastern Egypt: regional and national overview
INTRODUCTION: Occult hepatitis B infection (OBI) is considered to be one of the major risks for patients suffering from end-stage renal disease (ESRD) on regular hemodialysis (HD) and patients with chronic hepatitis C virus (HCV) infection. This study compared the prevalence of OBI among these two high-risk groups in the Suez Canal region, Northeastern Egyp
Rev. Soc. Bras. Med. Trop.. Publicado em: 2015-06
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6. Occult hepatitis B virus infection in liver transplant patients in a Brazilian referral center
Estimates of occult hepatitis B virus (HBV) infection prevalence varies among different studies depending on the prevalence of HBV infection in the study population and on the sensitivity of the assay used to detect HBV DNA. We investigated the prevalence of occult HBV infection in cirrhotic patients undergoing liver transplantation in a Brazilian referral c
Braz J Med Biol Res. Publicado em: 29/08/2014
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7. High prevalence of occult hepatitis B virus genotype H infection among children with clinical hepatitis in west Mexico
Studies on the prevalence of infection with hepatitis B virus (HBV) among children are scarce in Latin American countries, especially in Mexico. This study was aimed to investigate the prevalence of HBV infection, occult hepatitis B infection (OBI) and HBV genotypes among children with clinical hepatitis. In total, 215 children with clinical hepatitis were e
Mem. Inst. Oswaldo Cruz. Publicado em: 05/08/2014
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8. Epidemiology of hepatitis B virus infection among recyclable waste collectors in central Brazil
Introduction: The collection of recyclable waste materials is a widespread activity among the urban poor. Today, this occupation attracts an increasingly large number of individuals. Despite its economic and environmental importance, this activity is associated with unsafe and unhealthy working conditions. The aim of this study was to investigate the seroep
Rev. Soc. Bras. Med. Trop.. Publicado em: 2014-01
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9. Prevalence of occult hepatitis B virus infection in kidney transplant recipients
In this cross-sectional study, 207 hepatitis B surface antigen (HBsAg)-negative kidney transplant recipients were evaluated based on demographic and epidemiological data and on the levels of serological markers of hepatitis B virus (HBV) and hepatitis C virus infection and liver enzymes. Patients with HBV or human immunodeficiency virus infection were exclud
Mem. Inst. Oswaldo Cruz. Publicado em: 2013-08
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10. One window-period donation in two years of individual donor-nucleic acid test screening for hepatitis B, hepatitis C and human immunodeficiency virus
Objective: To describe general data on nucleic acid/serology testing and report the first hepatitis B-nucleic acid testing yield case of an immunized donor in Brazil. Methods: A total of 24,441 donations collected in 2010 and 2011 were submitted to
Rev. Bras. Hematol. Hemoter.. Publicado em: 2013-06
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11. Occult hepatitis B virus infection among injecting drug users in the Central-West Region of Brazil
The prevalence of occult hepatitis B virus (HBV) infection was investigated in 149 hepatitis B surface antigen (HBsAg) negative injecting drug users (IDUs) in the Central-West Region of Brazil. Of these individuals, 19 were positive for HBV DNA, resulting in an occult HBV infection prevalence of 12.7% (19/149); six of these 19 individuals had anti-HBV core
Mem. Inst. Oswaldo Cruz. Publicado em: 2013-05
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12. Prevalence of hepatitis B among pregnant women assisted at the public maternity hospitals of São Luís, Maranhão, Brazil
INTRODUCTION: Hepatitis B virus (HBV) infection is an important worldwide public health problem. In Brazil, the Ministry of Health estimates that 15% of the population has had contact with HBV, and that the mean rate of chronic carriers in Northeastern Brazil is around 0.5%. OBJECTIVE: The aim of this study was to assess the prevalence of HBV markers in preg
Braz J Infect Dis. Publicado em: 2012-12