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Kumalo A, Teklu T, Demisse T, Anjulo A. Undiagnosed Seroprevalence of Hepatitis B and C Virus Infections in the Community of Wolaita Zone, Southern Ethiopia. HEPATIC MEDICINE : EVIDENCE AND RESEARCH 2022; 14:111-122. [PMID: 35971532 PMCID: PMC9375552 DOI: 10.2147/hmer.s374029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 07/29/2022] [Indexed: 12/05/2022]
Abstract
Background Despite Ethiopia’s hepatitis endemic status with intermediate to hyperendemic level, there is no national strategy for monitoring, preventing, and controlling viral hepatitis. In order to advise community-based intervention programs, studies on the magnitude, determinant factors, and understanding of indigenous social organization are important. Thus, this study examined undiagnosed seroprevalence and associated factors for HBV and HCV infections among community members in Wolaita Zone, Southern Ethiopia. Methods A cross-sectional study was conducted on 320 individuals from randomly selected two woredas in the Wolaita Zone to determine the magnitude of HBV and HCV. Multistage sampling was used to select participants. Relevant clinical and sociodemographic data were collected using a structured questionnaire. One test strip technique was used for the screening of hepatitis B surface antigen and for antibodies against HCV. Both tests were confirmed by ELISA methods. The associated factors were assessed using bivariate and multivariate logistic regression analyses. P-values less than 0.05 were considered statistically significant. Results The seroprevalence for HBV infection was 6.6% (95% CI: 4.22%, 8.69%) using a one-step HBsAg test strip and 5.6% (95% CI: 3.47%, 8.58%) using confirmatory test (ELISA). The two tests had a very good agreement (K = 0.918; SE = 0.047; P < 0.001). The overall seroprevalence for HCV infection was 1.9% (95% CI: 0.9%, 3.0%). All four of the one-step HCV test strip positives were also positive by ELISA. One (0.3%) of the participants was co-infected with HBV and HCV. Hospital admission (AOR = 0.22; 95% CI = 0.5–0.95) and needle stick (AOR = 0.15; 95% CI = 0.07–0.72) were independently associated with HBV infections. Conclusion According to the current study, in Wolaita community, there is endemic to HBV at a higher-intermediate level and to HCV at a low level. It would be imperative to increase awareness of transmission modes and prevention of infection, as well as vaccination, in order to reduce the burden of both HBV and HCV.
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Affiliation(s)
- Abera Kumalo
- School of Medical Laboratory Sciences, College of Health Sciences and Medicine, Wolaita Sodo University, Sodo, Ethiopia
| | - Takele Teklu
- School of Medical Laboratory Sciences, College of Health Sciences and Medicine, Wolaita Sodo University, Sodo, Ethiopia
| | - Tigistu Demisse
- School of Medical Laboratory Sciences, College of Health Sciences and Medicine, Wolaita Sodo University, Sodo, Ethiopia
| | - Abebe Anjulo
- Department of Medical Laboratory, Wolaita Sodo Blood Bank, Sodo, Ethiopia
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Beykaso G, Mulu A, Giday M, Berhe N, Selamu M, Mihret A, Teklehaymanot T. Burden and Transmission Risks of Viral Hepatitis in Southern Ethiopia: Evidence Needed for Prevention and Control Measures. Risk Manag Healthc Policy 2021; 14:4843-4852. [PMID: 34880693 PMCID: PMC8646867 DOI: 10.2147/rmhp.s336776] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 11/13/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Hepatitis B virus (HBV) and hepatitis C virus (HCV) are significant causes of liver-associated morbidity and mortality for millions of people globally. Ethiopia is one of the viral hepatitis-endemic countries with no national strategy for surveillance and limited data. As such, this study aimed to investigated the extent and associated risk factors of HBV and HCV among community members in southern Ethiopia. METHODS A community-based cross-sectional study was conducted from January 2020 to August 2020. A structured questionnaire was used to collect behavioral and sociodemographic data. Serum samples were collected and assayed for seromarkers of HBV (HBsAg, anti-HBc, and anti-HBs) and HCV (anti-HCV) using ELISAs. In HBsAg-positive samples, HBV DNA was further quantified using RT-PCR. Data were entered into EpiData 3.1 and analyzed using SPSS 21.0. Descriptive statistics and logistic regression analysis were employed. RESULTS The study included 693 participants. Seromarkers for HBsAg, anti-HCV, anti-HBc, and anti-HBs were found to be 9.5%, 1.4%, 31.1%, and 14.3%, respectively. In 66 HBsAg positives, 57 (86.4%) had quantifiable HBV DNA. Prevalence of current HBV infection (HBsAg+, anti-HBc+, anti-HBs-) and lifetime exposure (positive for either HBsAg or anti-HBc) to HBV were 8.7% and 31.9%, respectively, and 63.1% of participants were vulnerable or had no evidence of prior HBV infection (HBsAg-, anti-HBc-, anti-HBs-). On multivariate logistic regression analysis, multiple sexual contacts, family history of hepatitis infection, alcohol consumption, and khat chewing were significantly associated with HBV. The seroprevalence of HBV was relatively high in this study area. CONCLUSION This study showed high prevalence of HBV infection, but low prevalence of HCV. This indicates that HBV is a major health problem in this community. Population-based surveillance, care, and treatment, as well as behavioral change and education programs, should be enhanced to minimize risk exposure.
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Affiliation(s)
- Gizachew Beykaso
- Department of Molecular Biology and Immunology, Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
- Department of Public Health, College of Medicine and Health Sciences, Wachemo University, Hossana, Ethiopia
| | - Andargachew Mulu
- Department of Virology, Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Mirutse Giday
- Department of Molecular Biology and Immunology, Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Nega Berhe
- Department of Molecular Biology and Immunology, Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Markos Selamu
- Department of Public Health, College of Medicine and Health Sciences, Wachemo University, Hossana, Ethiopia
| | - Adane Mihret
- Department of Virology, Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Tilahun Teklehaymanot
- Department of Molecular Biology and Immunology, Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
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Acikgoz A, Cimrin D, Kizildag S, Esen N, Balci P, Sayiner AA. Hepatitis A, B and C seropositivity among first-year healthcare students in western Turkey: a seroprevalence study. BMC Infect Dis 2020; 20:529. [PMID: 32698841 PMCID: PMC7374894 DOI: 10.1186/s12879-020-05247-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 07/14/2020] [Indexed: 12/03/2022] Open
Abstract
Background The risk of viral hepatitis among healthcare students (HCSs) is greater than that among the general population. Therefore, this study was conducted to investigate the seroprevalence of the hepatitis A virus (HAV), hepatitis B virus (HBV) and hepatitis C virus (HCV) among first-year HCSs at a university in Turkey and as a secondary objective, to determine the factors associated with HAV and HBV seropositivity. Methods This cross-sectional study was performed in first-year HCSs in Izmir, western Turkey. Data were collected using a self-administered questionnaire including items on sociodemographic characteristics, medical history, and hygiene. A total of 650 HCSs were tested for the HAV, HBV and HCV markers. Categorical variables were compared using the chi-square test. The association between independent variables and anti-HAV seropositivity and anti-HBs seropositivity was assessed by multinomial logistic regression analysis. Results The overall frequency of total anti-HAV seropositivity was 34.9%. HBsAg, total anti-HBc and anti-HBs seropositivity were found in 0.3, 1.2 and 93.7% of samples, respectively. All of the HCSs were negative for anti-HCV. Total anti-HAV seropositivity was found to be 1.73 times higher in those ≥21 years old, and it was 1.61 times higher in those who perceived their economic status to be average and 2.75 times higher in those who perceived their economic status to be low. Total anti-HAV seropositivity was found to be 4.37 times higher in those who lived in provinces with intermediate human development index levels. Total anti-HBs seropositivity was found to be 2.48 times higher in those ≤20 years old, and it was 2.13 times higher in those who perceived their economic status to be average. Conclusions Approximately two out of three HCSs were susceptible to HAV infection. Since HCSs are at high risk for HAV infection, they should be vaccinated before medical clerkships begin. Our results indicate that there is a high prevalence of anti-HBs seropositivity among HCSs. This result may be largely attributed to the implementation of a successful vaccination program in Turkey since 1998.
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Affiliation(s)
- Ayla Acikgoz
- Vocational School of Healthcare, Dokuz Eylul University, Balcova, 35340, Izmir, Turkey.
| | - Dilek Cimrin
- Vocational School of Healthcare, Dokuz Eylul University, Balcova, 35340, Izmir, Turkey
| | - Servet Kizildag
- Vocational School of Healthcare, Dokuz Eylul University, Balcova, 35340, Izmir, Turkey
| | - Nuran Esen
- Department of Microbiology, School of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Pinar Balci
- Department of Radiology, School of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Ayca Arzu Sayiner
- Department of Microbiology, School of Medicine, Dokuz Eylul University, Izmir, Turkey
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Santos MB, Santos ADD, Silva PPD, Barreto AS, Santos EOD, França AVC, Barbosa CS, Araújo KCGMD. Spatial analysis of viral hepatitis and schistosomiasis coinfection in an endemic area in Northeastern Brazil. Rev Soc Bras Med Trop 2017; 50:383-387. [PMID: 28700058 DOI: 10.1590/0037-8682-0411-2016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 02/01/2017] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION: This cross-sectional study analyzed the spatial distribution of hepatitis B or C virus (HBV/HBC) and schistosomiasis coinfection. METHODS: Serum samples were collected from patients with Schistosoma mansoni infection. These were tested for serological markers of HBV/HCV infection. The spatial distribution of coinfection was analyzed using intensity kernel estimation. RESULTS: Overall, 9.4% of individuals had contact with HBV and 1.7% of samples tested positive for anti-HCV antibodies. We identified clusters of risk located in the central region. CONCLUSIONS: Spatial analysis allowed visualization of high-risk areas, leading to a definition of priority areas to be targeted for intensification of control interventions.
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Affiliation(s)
- Márcio Bezerra Santos
- Departamento de Educação em Saúde, Universidade Federal de Sergipe, Campus Prof. Antônio Garcia Filho, Lagarto, SE, Brasil.,Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde, Universidade Federal de Sergipe, Campus Prof. João Cardoso Nascimento, Aracaju, SE, Brasil
| | - Allan Dantas Dos Santos
- Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde, Universidade Federal de Sergipe, Campus Prof. João Cardoso Nascimento, Aracaju, SE, Brasil.,Departamento de Enfermagem, Universidade Federal de Sergipe, Campus Prof. Antônio Garcia Filho, Lagarto, SE, Brasil
| | - Patrícia Pereira da Silva
- Programa de Pós-graduação Stricto Sensu em Biologia Parasitária, Universidade Federal de Sergipe, Cidade Universitária Prof. José Aloísio de Campos, São Cristóvão, SE, Brasil
| | - Aline Silva Barreto
- Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde, Universidade Federal de Sergipe, Campus Prof. João Cardoso Nascimento, Aracaju, SE, Brasil
| | | | - Alex Vianey Callado França
- Departamento de Medicina, Universidade Federal de Sergipe, Campus Prof. João Cardoso Nascimento, Aracaju, SE, Brasil
| | - Constança Simões Barbosa
- Laboratório de Referência em Esquistossomose, Centro de Pesquisa Aggeu Magalhães, Fundação Oswaldo Cruz, Recife, PE, Brasil
| | - Karina Conceição Gomes Machado de Araújo
- Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde, Universidade Federal de Sergipe, Campus Prof. João Cardoso Nascimento, Aracaju, SE, Brasil.,Departamento de Morfologia, Universidade Federal de Sergipe, Cidade Universitária Prof. José Aloísio de Campos, São Cristóvão, SE, Brasil
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Souto FJD. Distribution of hepatitis B infection in Brazil: the epidemiological situation at the beginning of the 21 st century. Rev Soc Bras Med Trop 2015; 49:11-23. [DOI: 10.1590/0037-8682-0176-2015] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 07/17/2015] [Indexed: 01/04/2023] Open
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Martins S, Livramento AD, Andrigueti M, Kretzer IF, Machado MJ, Spada C, Treitinger A. The prevalence of hepatitis B virus infection markers and socio-demographic risk factors in HIV-infected patients in Southern Brazil. Rev Soc Bras Med Trop 2015; 47:552-8. [PMID: 25467254 DOI: 10.1590/0037-8682-0109-2014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 10/20/2014] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION Hepatitis B virus (HBV) and human immunodeficiency virus (HIV) infections are two of the world's most important infectious diseases. Our objective was to determine the hepatitis B surface antigen (HBsAg) and hepatitis B core antibody (anti-HBc) prevalences among adult HIV-infected patients and identify the associations between socio-demographic variables and these HBV infection markers. METHODS This study was performed from October 2012 to March 2013. Three hundred HIV-seropositive patients were monitored by the Clinical Analysis Laboratory of Professor Polydoro Ernani de São Thiago University Hospital, Santa Catarina, Brazil. The blood tests included HBsAg, anti-HBc immunoglobulin M (IgM) and total anti-HBc. Patients reported their HIV viral loads and CD4+ T-cell counts using a questionnaire designed to collect sociodemographic data. RESULTS The mean patient age was 44.6 years, the mean CD4 T-cell count was 525/mm3, the mean time since beginning antiretroviral therapy was 7.6 years, and the mean time since HIV diagnosis was 9.6 years. The overall prevalences of HBsAg and total anti-HBc were 2.3% and 29.3%, respectively. Among the individuals analyzed, 0.3% were positive for HBsAg, 27.3% were positive for total anti-HBc, and 2.0% were positive either for HBsAg or total anti-HBc and were classified as chronically HBV-infected. Furthermore, 70.3% of the patients were classified as never having been infected. Male gender, age >40 years and Caucasian ethnicity were associated with an anti-HBc positive test. CONCLUSIONS The results showed an intermediate prevalence of HBsAg among the studied patients. Moreover, the associations between the anti-HBc marker and socio-demographic factors suggest a need for HBV immunization among these HIV-positive individuals, who are likely to have HIV/HBV coinfection.
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Affiliation(s)
- Saulo Martins
- Programa de Pós-Graduação em Farmácia, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina, Florianópolis, SC
| | - Andréa do Livramento
- Programa de Pós-Graduação em Farmácia, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina, Florianópolis, SC
| | - Michelle Andrigueti
- Programa de Pós-Graduação em Farmácia, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina, Florianópolis, SC
| | - Iara Fabricia Kretzer
- Programa de Pós-Graduação em Farmácia, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina, Florianópolis, SC
| | - Marcos José Machado
- Departamento de Análises Clínicas, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina, Florianópolis, SC
| | - Celso Spada
- Departamento de Análises Clínicas, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina, Florianópolis, SC
| | - Aricio Treitinger
- Departamento de Análises Clínicas, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina, Florianópolis, SC
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Martins S, Livramento AD, Andrigueti M, Kretzer IF, Machado MJ, Spada C, Treitinger A. Vaccination coverage and immunity against hepatitis B among HIV-infected patients in South Brazil. Braz J Infect Dis 2015; 19:181-6. [PMID: 25626960 PMCID: PMC9425421 DOI: 10.1016/j.bjid.2014.12.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 11/13/2014] [Accepted: 12/17/2014] [Indexed: 01/19/2023] Open
Abstract
Evidence-based strategies to improve the hepatitis B virus (HBV) vaccination coverage rates might help to reduce the burden caused by co-infection with HBV and human immunodeficiency virus (HIV). In this study, the aim was to evaluate the vaccination coverage and immunity against HBV among HIV-infected individuals in South Brazil, and identify factors that are associated with compliance patterns and antibody reactivity. Three hundred HIV-infected men and women were included in this survey. The patients answered a standardized questionnaire, and vaccination cards were checked in order to assess hepatitis B vaccine status. A blood sample was collected for quantitative determination of antibody to hepatitis B virus surface antigen (anti-HBs). Participants were also evaluated for their CD4 cell count and HIV viral load. The overall vaccination coverage of HBV vaccination found in this study (57.4%) was lower than that was previously reported in South Brazil. Anti-HBs levels >10 IU/L were observed in 47.0% of the studied population. A significant inequality in the coverage rates and antibody reactivity was found in favor of patients with better economic status. In conclusion, the results indicate the need for improvement in the HBV vaccination coverage among HIV carriers, in particular focusing on low-income individuals.
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Affiliation(s)
- Saulo Martins
- Health Sciences Center, Federal University of Santa Catarina, University Campus, Florianópolis, SC, Brazil; Professor Polydoro Ernani de São Thiago University Hospital, Federal University of Santa Catarina, University Campus, Florianópolis, SC, Brazil
| | - Andréa do Livramento
- Health Sciences Center, Federal University of Santa Catarina, University Campus, Florianópolis, SC, Brazil
| | - Michelle Andrigueti
- Professor Polydoro Ernani de São Thiago University Hospital, Federal University of Santa Catarina, University Campus, Florianópolis, SC, Brazil
| | - Iara Fabricia Kretzer
- Health Sciences Center, Federal University of Santa Catarina, University Campus, Florianópolis, SC, Brazil
| | - Marcos José Machado
- Department of Clinical Analysis, Health Sciences Center, Federal University of Santa Catarina, University Campus, Florianópolis, SC, Brazil
| | - Celso Spada
- Department of Clinical Analysis, Health Sciences Center, Federal University of Santa Catarina, University Campus, Florianópolis, SC, Brazil
| | - Arício Treitinger
- Department of Clinical Analysis, Health Sciences Center, Federal University of Santa Catarina, University Campus, Florianópolis, SC, Brazil.
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Naveira M, Barbosa J, Sereno L, Domanico A, Mesquita F, de Souza LA. 12 years of universal access to hepatitis C treatment: Brazil's comprehensive response. J Int Assoc Provid AIDS Care 2014; 13:560-7. [PMID: 25158974 DOI: 10.1177/2325957414547739] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Hepatitis C is considered one of the most neglected diseases in world. Worldwide about 150 million people are chronically infected by hepatitis C virus (HCV), and 60% to 70% of them will develop severe liver disease. This article describes Brazil's response to hepatitis C, from the first steps in 1993 to a national program in 2002. We reviewed the available literature, most of it in Brazilian Portuguese, and compiled them in order to share this experience with those seeking some pragmatic solutions. After 12 years, the national program has achieved universal coverage of treatment, resulting in saved lives and resources for the health system. There is abundant evidence that the HCV epidemic deserves attention. The overall consequence of long-term HCV infection is a negative impact on the health care economy. The Brazilian experience can be adapted to many countries in the world, in compliance with the 2010 World Health Organization World Health Assembly Resolution.
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Affiliation(s)
- Marcelo Naveira
- Seção Centro de Referência em AIDS (SECRAIDS), Santos, São Paulo, Brazil
| | - Jarbas Barbosa
- Ministry of Health, Secretariat of Health Surveillance, Brasília, Brazil
| | - Leandro Sereno
- Instituto de Infectologia Emílio Ribas, Guarujá, São Paulo, Brazil
| | - Andrea Domanico
- Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Fábio Mesquita
- Ministry of Health, National Department of STD, HIV/AIDS and Viral Hepatitis, Brasília, Brazil
| | - Laura Alves de Souza
- Ministry of Health, National Department of STD, HIV/AIDS and Viral Hepatitis, Brasília, Brazil
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Livramento AD, Schultz J, Batista KZS, Treitinger A, de Cordova CMM, Spada C. Immune memory response induced in vitro by recombinant hepatitis B surface antigen challenge 13-18 years after primary vaccination. J Med Virol 2014; 86:1700-4. [DOI: 10.1002/jmv.24012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/06/2014] [Indexed: 01/05/2023]
Affiliation(s)
- Andréa do Livramento
- Post-Graduation Program in Pharmacy, Health Sciences Center, Federal University of Santa Catarina; University Campus; Florianópolis Santa Catarina Brazil
| | - Júnia Schultz
- Department of Natural Sciences, Exact and Natural Sciences Center, Regional University of Blumenau; University Campus; Blumenau Santa Catarina Brazil
| | - Keila Zaniboni Siqueira Batista
- Department of Natural Sciences, Exact and Natural Sciences Center, Regional University of Blumenau; University Campus; Blumenau Santa Catarina Brazil
| | - Arício Treitinger
- Department of Clinical Analysis, Health Sciences Center, Federal University of Santa Catarina; University Campus; Florianópolis Santa Catarina Brazil
| | - Caio Maurício Mendes de Cordova
- Department of Pharmaceutical Sciences, Health Sciences Center, Regional University of Blumenau; University Campus; Blumenau Santa Catarina Brazil
| | - Celso Spada
- Department of Clinical Analysis, Health Sciences Center, Federal University of Santa Catarina; University Campus; Florianópolis Santa Catarina Brazil
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Low prevalence of hepatitis B and C virus markers among children and adolescents. BIOMED RESEARCH INTERNATIONAL 2014; 2014:324638. [PMID: 25093164 PMCID: PMC4100382 DOI: 10.1155/2014/324638] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 05/22/2014] [Accepted: 05/27/2014] [Indexed: 12/11/2022]
Abstract
This study aimed to determine the prevalence of HBV and HCV among children and adolescents attending schools and daycare centres in Rio de Janeiro State, located in southern Brazil. Serum samples from 1,217 individuals aged 0 to 18 years were collected from 1999 to 2012 and tested for HBsAg, total anti-HBc, anti-HBs, and anti-HCV by ELISA. Reactive HBsAg and anti-HBc samples were tested for HBV DNA. Reactive anti-HCV samples were tested for HCV RNA and genotyped by RFLP. HBsAg was detected in 1.8% of individuals, and total anti-HBc was detected among 3.6% of individuals. Anti-HBs reactivity was found among 25.3% (322/1,217) of the individuals and increased from 6.28% in the years 1999-2000 to 76.2% in the years 2001–2012 (P < 0.0001). HBV DNA was detected in 18 of 51 individuals who presented with HBsAg or isolated anti-HBc, and nine were considered occult hepatitis B cases. Three individuals were anti-HCV- and HCV RNA-positive: two of them were infected with genotype 1, and the other was infected with genotype 3. Low levels of HBV and HCV markers were observed in children and adolescents. HBV immunity increased during the period of study, indicating that childhood universal HBV vaccination has been effective for controlling HBV infection in Brazil.
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Hepatitis C worldwide and in Brazil: silent epidemic--data on disease including incidence, transmission, prevention, and treatment. ScientificWorldJournal 2014; 2014:827849. [PMID: 25013871 PMCID: PMC4070442 DOI: 10.1155/2014/827849] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 05/16/2014] [Indexed: 12/17/2022] Open
Abstract
Hepatitis C virus (HCV) is endemic worldwide and according to the World Health Organization (WHO), there are about 150 million chronic carriers worldwide. The infection is a leading cause of liver diseases like cirrhosis and hepatocellular carcinoma (HCC); thus, HCV infection constitutes a critical public health problem. There are increasing efforts worldwide in order to reduce the global impact of hepatitis C through the implementation of programmatic actions that may increase the awareness of viral hepatitis and also improve surveillance, prevention, and treatment. In Brazil, about 1,5 million people have been chronically infected with HCV. The country has a vast territory with uneven population density, and hepatitis C incidence rates are variable with the majority of cases concentrated in the most populated areas. Currently, the main priorities of Brazilian Ministry of Health's strategies for viral hepatitis management include the prevention and early diagnosis of viral hepatitis infections; strengthening of the healthcare network and lines of treatment for sexually transmitted diseases, viral hepatitis, and AIDS; improvement and development of surveillance, information, and research; and promotion of universal access to medication. This review aims to summarize the available data on hepatitis C epidemiology and current status of efforts in prevention and infection control around the world and in Brazil.
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Nau AL, Fayad L, Lazzarotto C, Shiozawa MBC, Dantas-Corrêa EB, Schiavon LDL, Narciso-Schiavon JL. Prevalence and clinical features of celiac disease in patients with hepatitis B virus infection in Southern Brazil. Rev Soc Bras Med Trop 2014; 46:397-402. [PMID: 23982094 DOI: 10.1590/0037-8682-0093-2013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 07/11/2013] [Indexed: 01/04/2023] Open
Abstract
INTRODUCTION Celiac disease is an autoimmune disorder that involves gluten intolerance and can be triggered by environmental factors including hepatitis B virus (HBV) infection. This study aimed to describe the prevalence of celiac disease in individuals with HBV infection and to describe the clinical and laboratory characteristics of celiac disease associated with HBV. METHODS This cross-sectional study included 50 hepatitis B patients tested for IgA anti-endomysial antibodies (EMAs) and tissue anti-transglutaminase (TTG) between August 2011 and September 2012. RESULTS Fifty patients were included with a mean age of 46.0 ± 12.6 (46.0) years; 46% were female and 13% were HBeAg+. Six patients had positive serology for celiac disease, four were EMA+, and five were TTG+. When individuals with positive serology for celiac disease were compared to those with negative serology, they demonstrated a higher prevalence of abdominal pain (100% vs. 33.3%, p = 0.008), lower median creatinine (0.7 mg/dL vs. 0.9 mg/dL, p = 0.007) and lower mean albumin (3.6 ± 0.4 g/L vs. 3.9 ± 0.3g/L, p = 0.022). All individuals with positive serology for celiac disease underwent upper digestive endoscopy, and three of the patients exhibited a macroscopic pattern suggestive of celiac disease. Histologically, five patients demonstrated an intra-epithelial lymphocytic infiltrate level > 30%, and four patients showed villous atrophy associated with crypt hyperplasia on duodenal biopsy. CONCLUSIONS An increased prevalence of celiac disease was observed among hepatitis B patients. These patients were symptomatic and had significant laboratory abnormalities. These results indicate that active screening for celiac disease among HBV-infected adults is warranted.
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Affiliation(s)
- Angélica Luciana Nau
- Núcleo de Estudos em Gastroenterologia e Hepatologia, Universidade Federal de Santa Catarina, Florianópolis, SC
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do Livramento A, Sampaio J, Schultz J, Batista KZS, Treitinger A, de Cordova CMM, Spada C. In vitro lymphocyte stimulation by recombinant hepatitis B surface antigen: A tool to detect the persistence of cellular immunity after vaccination. J Virol Methods 2013; 193:572-8. [DOI: 10.1016/j.jviromet.2013.07.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 07/23/2013] [Accepted: 07/26/2013] [Indexed: 11/16/2022]
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Passos AM, Strazer Neto M, Treitinger A, Spada C. Seroprevalence of HBV and HCV markers among young adult males in the Air Force in Florianópolis, South Brazil. BRAZ J PHARM SCI 2012. [DOI: 10.1590/s1984-82502012000200009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
We investigated the prevalence of hepatitis B virus (HBV) and hepatitis C virus (HCV) serological markers of infection in young adults from the metropolitan region of Florianópolis who were conscripts of the Air Base of Florianópolis in the state of Santa Catarina, Brazil. A population-based cross-sectional seroprevalence study was conducted with 371 young males during a one year period starting in June 2009. Demographic characteristics, socio-economic characteristics and possible risk factors to HBV and HCV were assessed. Blood samples were analyzed for HBsAg, anti-HBc, anti-HCV and anti-HBs through automated microparticle enzymatic immunoassays (Abbott®, AxSYM System, Wiesbaden, Germany). None of the participants showed positivity to HBsAg or anti-HCV. The prevalence of anti-HBc was 1.6% (95% CI 0.6 - 3.5), and the prevalence of anti-HBs was 40.7% (95% CI 35.7 - 45.9). Unsafe sex was associated with positive anti-HBc in a bivariate analysis. There was a very low prevalence of past HBV infection and no cases of past HCV infection in a young adult population in the metropolitan region of Florianópolis. The very low prevalence of markers of infection and risk factors indicates a very optimistic future with respect to HBV and HCV infection in this population.
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Affiliation(s)
| | | | | | - Celso Spada
- Federal University of Santa Catarina, Brazil
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Alavian SM. Seroprevalence of hepatitis B and C infection markers among children and adolescents in the southern Brazilian region. Rev Inst Med Trop Sao Paulo 2011; 53:347. [PMID: 22183461 DOI: 10.1590/s0036-46652011000600010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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16
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Passos AM, Treitinger A, Spada C. Hepatitis B immunity and vaccination coverage among young adult males in the Air Force in South Brazil. Vaccine 2011; 29:9284-8. [DOI: 10.1016/j.vaccine.2011.06.050] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 04/29/2011] [Accepted: 06/14/2011] [Indexed: 11/29/2022]
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Alavian SM, Aalaei-Andabili SH. The impact of HBV vaccination on Brazilian adolescents requires more attention. CAD SAUDE PUBLICA 2011; 27:2070. [PMID: 22031212 DOI: 10.1590/s0102-311x2011001000021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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