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1.
Lancet Reg Health West Pac ; 35: 100740, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37424691

RESUMO

The diverse geographic, demographic, and societal factors in the Pacific Island Countries and Territories (PICTs) have contributed to unique epidemiological patterns of HIV, syphilis, and hepatitis B. Transmission can be during pregnancy, at the time of birth or via breastfeeding for HIV, and can have long-term adverse outcomes. Given the similarities in prevention of mother-to-child transmission of these infections, coordinated interventions for triple elimination are used. This systematic review has evaluated the peer-reviewed literature, grey literature, and global databases to assess the availability of data to report against elimination targets in the WHO Regional Framework for the Triple Elimination of Mother-to-Child Transmission of HIV, Hepatitis B and Syphilis in Asia and the Pacific 2018-2030. The secondary objective is to report on progress towards these targets. The findings show that none of the PICTs are on track to achieve triple elimination by 2030. Amongst the limited publicly available indicator data, there is suboptimal coverage for most indicators. It is important that there is an increase in availability of and access to antenatal care, testing, and treatment for pregnant women. Increased efforts are needed to collect data on key indicators and integrate reporting into existing systems to avoid extra burden. Funding: Leila Bell was supported by an Australian Government Research Training Program (RTP) Scholarship, Australia. Funding sources had no role in paper design, data collection, data analysis, interpretation, or writing of the paper.

2.
Lancet Gastroenterol Hepatol ; 8(10): 932-942, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37517417

RESUMO

Hepatitis B is estimated to cause 500 000-900 000 deaths globally each year. WHO has targets for elimination by 2030; however, progress has stalled due to multiple barriers, notably a paucity of global funding and insufficient evidence on the economic burden of disease. Using a dynamic mathematical model of hepatitis B transmission, disease progression, and mortality in the six WHO regions, we estimate the costs and benefits of reaching 90% vaccination, 90% diagnosis, and 80% treatment coverage by either 2030 (as targeted), 2040, or 2050. Without increased intervention coverage, hepatitis B mortality was estimated to cost US$784·35 billion (95% Crl 731·63-798·33 billion) globally in lost productivity over 2022-50. Achieving targets by 2030 averted 25·64 million infections (95% Crl 17·39-34·55 million) and 8·63 million hepatitis B-attributable deaths (95% Crl 7·12-9·74 million) over 2022-50. This achievement incurred an incremental cost of $2934·55 (95% Crl 2778·55-3173·52) per disability-adjusted life year averted by 2050 under a health systems perspective, and was cost-saving with a net economic benefit of $99·03 billion (95% Crl 78·66-108·96 billion) by 2050 from a societal perspective. Delayed achievement of intervention coverage targets had reduced health and economic benefits. These findings highlight that hepatitis B is an underappreciated cause of economic burden and show investment toward elimination will probably yield substantial returns.


Assuntos
Custos de Cuidados de Saúde , Hepatite B , Humanos , Modelos Teóricos , Análise Custo-Benefício , Efeitos Psicossociais da Doença , Hepatite B/epidemiologia , Hepatite B/prevenção & controle
3.
BMJ Open ; 13(3): e070663, 2023 03 16.
Artigo em Inglês | MEDLINE | ID: mdl-36927591

RESUMO

INTRODUCTION: Despite the availability of effective, subsidised hepatitis B treatment, linkage to care and treatment rates remain very low globally. In Australia, specially trained primary care physicians (general practitioner, GPs) can prescribe hepatitis B treatment, however, most hepatitis B care occurs in specialist clinics. Increasing hepatitis B management by GPs in primary care clinics is essential to achieve national hepatitis B linkage to care and treatment targets by 2030.This pilot study determines the feasibility, acceptability and effectiveness of Simply B, a novel GP hepatitis B e-support package designed to increase hepatitis B management by GPs in primary care clinics. METHODS AND ANALYSIS: This study will be conducted in three parts:Part A: A prospective open-label pilot intervention study, comparing the proportion of people with hepatitis B who are managed by their GP in primary care clinics before, 12 months and 24 months after implementation of the Simply B electronic hepatitis B support package.Part B: A nested qualitative health services feasibility study using semistructured interviews and thematic analysisPart C: Cost-effectiveness analysis. ETHICS AND DISSEMINATION: This study has received ethics approval by St Vincent's Hospital. Data management and analysis will be centralised through the Department of Gastroenterology, St Vincent's Hospital. TRIAL REGISTRATION NUMBER: NCT05614466.


Assuntos
Algoritmos , Atenção Primária à Saúde , Humanos , Austrália , Projetos Piloto , Estudos Prospectivos
4.
Med J Aust ; 218(4): 168-173, 2023 03 06.
Artigo em Inglês | MEDLINE | ID: mdl-36596568

RESUMO

OBJECTIVES: To assess the impact on diagnosis targets, cost, and cost-effectiveness of universal hepatitis B screening in Australia. DESIGN: Markov model simulation of disease and care cascade progression for people with chronic hepatitis B in Australia. SETTING: Three scenarios were compared: 1. no change to current hepatitis B virus (HBV) testing practice; 2. universal screening strategy, with the aim of achieving the WHO diagnosis target by 2030 (90% of people with chronic hepatitis B diagnosed), based on opportunistic (general practitioner-initiated) screening for HBsAg; 3. universal screening strategy, and also ensuring that 50% of people with chronic hepatitis B are receiving appropriate clinical management by 2030. MAIN OUTCOME MEASURES: Projected care cascade for people with chronic hepatitis B, cumulative number of HBV-related deaths, intervention costs, and health utility (quality-adjusted life-years [QALYs] gained during 2020-2030). An incremental cost-effectiveness ratio (ICER) threshold (v scenario 1) of $50 000 per QALY gained was applied. RESULTS: Compared with scenario 1, 80 HBV-related deaths (interquartile range [IQR], 41-127 deaths) were averted during 2020-2030 in scenario 2, 315 HBV-related deaths (IQR, 211-454 deaths) in scenario 3. Scenario 2 cost $84 million (IQR, $41-106 million) more than scenario 1 during 2020-2030 (+8%), yielding an ICER of $104 921 (IQR, $49 587-107 952) per QALY gained. Scenario 3 cost $263 million (IQR, $214-316 million) more than scenario 1 during 2020-2030 (+24%), yielding an ICER of $47 341 (IQR, $32 643-58 200) per QALY gained. Scenario 3 remained cost-effective if the test positivity rate was higher than 0.35% or the additional costs per person tested did not exceed $4.02. CONCLUSIONS: Universal screening for hepatitis B will be cost-effective only if the cost of testing is kept low and people receive appropriate clinical management.


Assuntos
Hepatite B Crônica , Hepatite B , Humanos , Hepatite B Crônica/tratamento farmacológico , Antivirais/uso terapêutico , Análise Custo-Benefício , Programas de Rastreamento , Hepatite B/prevenção & controle , Vírus da Hepatite B , Anos de Vida Ajustados por Qualidade de Vida , Organização Mundial da Saúde
5.
JHEP Rep ; 4(10): 100533, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-36052221

RESUMO

Background & Aims: Strategies to implement HBV screening and treatment are critical to achieve HBV elimination but have been inadequately evaluated in sub-Saharan Africa (sSA). Methods: We assessed the feasibility of screen-and-treat interventions in 3 real-world settings (community, workplace, and hospital) in Senegal. Adult participants were screened using a rapid HBsAg point-of-care test. The proportion linked to care, the proportion who had complete clinical staging (alanine transaminase [ALT], viral load, and FibroScan®), and the proportion eligible for treatment were compared among the 3 intervention groups. Results: In 2013-2016, a total of 3,665 individuals were screened for HBsAg in the community (n = 2,153) and in workplaces (n = 1,512); 199/2,153 (9.2%) and 167/1,512 (11%) were HBsAg-positive in the community and workplaces, respectively. In the hospital setting (outpatient clinics), 638 HBsAg-positive participants were enrolled in the study. All infected participants were treatment naïve. Linkage to care was similar among community-based (69.9%), workplace-based (69.5%), and hospital-based interventions (72.6%, p = 0.617). Of HBV-infected participants successfully linked to care, full clinical staging was obtained in 47.5% (66/139), 59.5% (69/116), and 71.1% (329/463) from the community, workplaces, and hospitals, respectively (p <0.001). The proportion eligible for treatment (EASL criteria) differed among community- (9.1%), workplace- (30.4%), and hospital-based settings (17.6%, p = 0.007). Acceptability of antiviral therapy, adherence, and safety at 1 year were very good. Conclusions: HBV screen-and-treat interventions are feasible in non-hospital and hospital settings in Senegal. However, the continuum of care is suboptimal owing to limited access to full clinical staging. Improvement in access to diagnostic services is urgently needed in sSA. Lay summary: Hepatitis B infection is highly endemic in Senegal. Screening for infection can be done outside hospitals, in communities or workplaces. However, the hepatitis B continuum of care is suboptimal in Senegal and needs to be simplified to scale-up diagnosis and treatment coverage.

6.
Gastroenterology ; 163(6): 1643-1657.e14, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-36037995

RESUMO

BACKGROUND & AIMS: Necroptosis is a highly inflammatory mode of cell death that has been implicated in causing hepatic injury including steatohepatitis/ nonalcoholic steatohepatitis (NASH); however, the evidence supporting these claims has been controversial. A comprehensive, fundamental understanding of cell death pathways involved in liver disease critically underpins rational strategies for therapeutic intervention. We sought to define the role and relevance of necroptosis in liver pathology. METHODS: Several animal models of human liver pathology, including diet-induced steatohepatitis in male mice and diverse infections in both male and female mice, were used to dissect the relevance of necroptosis in liver pathobiology. We applied necroptotic stimuli to primary mouse and human hepatocytes to measure their susceptibility to necroptosis. Paired liver biospecimens from patients with NASH, before and after intervention, were analyzed. DNA methylation sequencing was also performed to investigate the epigenetic regulation of RIPK3 expression in primary human and mouse hepatocytes. RESULTS: Identical infection kinetics and pathologic outcomes were observed in mice deficient in an essential necroptotic effector protein, MLKL, compared with control animals. Mice lacking MLKL were indistinguishable from wild-type mice when fed a high-fat diet to induce NASH. Under all conditions tested, we were unable to induce necroptosis in hepatocytes. We confirmed that a critical activator of necroptosis, RIPK3, was epigenetically silenced in mouse and human primary hepatocytes and rendered them unable to undergo necroptosis. CONCLUSIONS: We have provided compelling evidence that necroptosis is disabled in hepatocytes during homeostasis and in the pathologic conditions tested in this study.


Assuntos
Necroptose , Hepatopatia Gordurosa não Alcoólica , Humanos , Feminino , Masculino , Camundongos , Animais , Epigênese Genética , Hepatopatia Gordurosa não Alcoólica/genética , Hepatócitos , Proteína Serina-Treonina Quinases de Interação com Receptores/genética , Proteínas Quinases/genética
7.
BMC Prim Care ; 23(1): 137, 2022 06 02.
Artigo em Inglês | MEDLINE | ID: mdl-35655159

RESUMO

BACKGROUND: In Australia, only 22% of people with chronic hepatitis B (CHB) are clinically managed; and a national effort is engaging primary care workforce in providing CHB-related care. This study explored CHB-related knowledge, attitudes, barriers and support needs of general practitioners (GPs). METHODS: A survey was sent to a random sample of 1,000 Australian GPs in April- October 2018; 134 of 978 eligible GPs completed the questionnaire (14%). RESULTS: Respondents had high knowledge of at-risk populations (> 79%) and hepatitis B serology (82%), and most saw hepatitis B testing and monitoring as part of their work (95% and 86%, respectively). However, the survey revealed low knowledge, awareness and intention with respect to hepatitis B treatment: 23% correctly understood treatment initiation; 40% were aware that treatment for CHB could be dispensed in the community; 23% agreed that prescribing was part of their work. Lack of time was considered the greatest barrier (38%) and clear guidelines was the most important facilitator to providing care (72%). CONCLUSION: Interventions are needed to generate interest and skills to provide CHB-related care by GPs.


Assuntos
Clínicos Gerais , Hepatite B , Austrália/epidemiologia , Conhecimentos, Atitudes e Prática em Saúde , Hepatite B/epidemiologia , Humanos , Inquéritos e Questionários
8.
BMC Public Health ; 22(1): 536, 2022 03 18.
Artigo em Inglês | MEDLINE | ID: mdl-35303855

RESUMO

BACKGROUND: Hepatitis B is a chronic viral infection, a leading cause of primary liver cancer and identified as a major public health priority by the World Health Organization. Despite a high proportion of people in Australia who have been diagnosed with hepatitis B, significant gaps remain in health care access and in accurate knowledge about hepatitis B. Most people with hepatitis B in Australia were born in China, where the infection has an intergenerational impact with significant social implications resulting from the infection. Understanding how people of Chinese ethnicity with hepatitis B understand and respond to hepatitis B is imperative for reducing morbidity, mortality, and the personal and social impact of the infection. METHODS: Qualitative semi-structured interviews with people with hepatitis B of Chinese ethnicity recruited through a specialist service identified the advice people with hepatitis B thought was important enough to inform the experience of people newly diagnosed with hepatitis B. A thematic analysis of the data privileged the lived experience of participants and their personal, rather than clinical, explanations of the virus. RESULTS: Hepatitis B infection had psychological and physical consequences that were informed by cultural norms, and to which people had responded to with significant behavioural change. Despite this cohort being engaged with specialist clinical services with access to the most recent, comprehensive, and expert information, much of the advice people with hepatitis B identified as important for living with hepatitis B was not based on biomedical understandings. Key suggestions from people with hepatitis B were to form sustainable clinical relationships, develop emotional resilience, make dietary changes, regulate energy, and issues related to disclosure. CONCLUSIONS: The study highlights conflicts between biomedical and public health explanations and the lived experience of hepatitis B among people of Chinese ethnicity in Australia. Beliefs about hepatitis B are embedded within cultural understandings of health that can conflict with bio-medical explanations of the infection. Acknowledging these perspectives provides for insightful communication between health services and their clients, and the development of nuanced models of care informed by the experience of people with hepatitis B.


Assuntos
Hepatite B , Povo Asiático , Austrália , China/epidemiologia , Etnicidade , Hepatite B/diagnóstico , Humanos
9.
Med J Aust ; 216(9): 478-486, 2022 05 16.
Artigo em Inglês | MEDLINE | ID: mdl-35249220

RESUMO

INTRODUCTION: The prevalence of hepatitis B virus (HBV) infection in Australia is nearly 1%. In certain well defined groups the prevalence is far greater, yet an estimated 27% of people living with HBV infection remain undiagnosed. Appropriate screening improves detection, increases opportunity for treatment, and ultimately reduces the significant morbidity and mortality associated with the development of liver fibrosis and hepatocellular carcinoma (HCC). MAIN RECOMMENDATIONS: This statement highlights important aspects of HBV infection management in Australia. There have been recent changes in nomenclature and understanding of natural history, as well as a newly defined upper limit of normal for liver tests that determine phase classification and threshold for antiviral treatment. As the main burden of hepatitis B in Australia is within migrant and Indigenous communities, early identification and management of people living with hepatitis B is essential to prevent adverse outcomes including liver cancer and cirrhosis. CHANGE IN MANAGEMENT AS A RESULT OF THIS GUIDELINE: These recommendations aim to raise awareness of the current management of hepatitis B in Australia. Critically, the timely identification of individuals living with hepatitis B, and where appropriate, commencement of antiviral therapy, can prevent the development of cirrhosis, HCC and mother-to-child transmission as well as hepatitis B reactivation in immunocompromised individuals. Recognising patient and viral factors that predispose to the development of cirrhosis and HCC will enable clinicians to risk-stratify and appropriately implement surveillance strategies to prevent these complications of hepatitis B.


Assuntos
Carcinoma Hepatocelular , Hepatite B Crônica , Hepatite B , Neoplasias Hepáticas , Antivirais/uso terapêutico , Austrália/epidemiologia , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/epidemiologia , Carcinoma Hepatocelular/etiologia , Consenso , Feminino , Hepatite B/diagnóstico , Hepatite B/tratamento farmacológico , Hepatite B/epidemiologia , Vírus da Hepatite B , Hepatite B Crônica/diagnóstico , Hepatite B Crônica/tratamento farmacológico , Hepatite B Crônica/epidemiologia , Humanos , Transmissão Vertical de Doenças Infecciosas/prevenção & controle , Cirrose Hepática/diagnóstico , Cirrose Hepática/etiologia , Cirrose Hepática/prevenção & controle , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/epidemiologia , Neoplasias Hepáticas/prevenção & controle
10.
Liver Transpl ; 28(2): 236-246, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34624175

RESUMO

Introduction of universal access to direct-acting antiviral (DAA) therapy for hepatitis C virus (HCV) in Australia and New Zealand on March 1st , 2016, has had a major impact on the number of people with chronic HCV infection, but the impact on liver transplantation rates is unknown. We conducted a retrospective registry study including all adult liver transplantations from the Australia and New Zealand Liver and Intestinal Liver Transplant Registry (ANZLITR) data set. Interrupted time series analysis determined the impact of DAAs in 2016 on the number of HCV liver transplantations per year. Cox regression analysis was used to determine the impact of DAAs on post-liver transplantation survival. Between January 1, 1990, and December 31, 2019 5318 adult liver transplantations were performed, and 29% (1531) were for HCV infection. Prior to the introduction of DAAs, there was a mean increase of 3.5 adult liver transplantations performed for HCV per annum, but between 2016 and 2019 there was a mean decrease of 7.9 adult liver transplantations per annum (P < 0.001). Similarly, the proportion of liver transplantations performed for HCV increased from 9% (1990) to 33% in 2016 and then fell to 23% in 2019 (P < 0.001). The number and proportion of patients with HCV added to the liver transplantation waiting list also fell in 2016 (P < 0.001) when compared with other indications. The introduction of DAAs was associated with a 31% reduction in death after liver transplantation, adjusted for age at transplant and hepatocellular carcinoma (HCC; hazard ratio [HR], 0.69; 95% confidence interval [CI], 0.48-0.99; P = 0.047). The number of adult liver transplantations performed for HCV-related liver cirrhosis and HCC has reduced since the introduction of universal access to DAAs in 2016 in Australia and New Zealand.


Assuntos
Carcinoma Hepatocelular , Hepatite C Crônica , Hepatite C , Neoplasias Hepáticas , Transplante de Fígado , Adulto , Antivirais/uso terapêutico , Carcinoma Hepatocelular/tratamento farmacológico , Carcinoma Hepatocelular/epidemiologia , Carcinoma Hepatocelular/cirurgia , Hepacivirus , Hepatite C/complicações , Hepatite C/tratamento farmacológico , Hepatite C/epidemiologia , Hepatite C Crônica/diagnóstico , Hepatite C Crônica/tratamento farmacológico , Hepatite C Crônica/epidemiologia , Humanos , Transplante de Fígado/efeitos adversos , Nova Zelândia/epidemiologia , Estudos Retrospectivos
11.
PLOS Glob Public Health ; 2(5): e0000394, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36962423

RESUMO

Timely birth dose vaccination is key for achieving elimination of hepatitis B, however, programmatic requirements for delivering current vaccine presentations to births outside of health facilities inhibits coverage within many low-and middle-income countries (LMICs). Vaccine technologies in development such as microarray patches (MAPs) could assist in overcoming these barriers, but procurement could incur higher per-dose commodity costs than current ten-dose (US$0.34) and single-dose (US$0.62) vial presentations, necessitating an evaluation of the economic value proposition for MAPs. Within 80 LMICs offering universal hepatitis B birth dose vaccination, the cost-effectiveness of using MAPs to expand coverage was evaluated using a mathematical model. We considered three potential per dose MAP prices (US$1.65, US$3.30, and US$5.00), and two potential MAP use-cases: (1) MAPs are used by lay-health workers to expand birth dose coverage outside of health facility settings, and (2) MAPs are also preferred by qualified health workers, replacing a proportion of existing coverage from vaccine vials. Analysis took the health system perspective, was costed in 2020 US$, and discounted at 3% annually. Across minimal (1% additional coverage) and maximal (10% additional and 10% replacement coverage) MAP usage scenarios, between 2.5 (interquartile range [IQR]: 1.9, 3.1) and 38 (IQR: 28,44) thousand DALYs were averted over the estimated 2020 birth cohort lifetime in 80 LMICs. Efficiency of MAPs was greatest when used to provide additional coverage (scenario 1), on average saving US$88.65 ($15.44, $171.22) per DALY averted at a price of US$5.00 per MAP. Efficiency was reduced when used to replace existing coverage (scenario 2); however, at prices up to US$5.00 per MAP, we estimate this use-case could remain cost-effective in at least 73 (91%) modelled LMICs. Our findings suggest even at higher procurement costs, MAPs are likely to represent a highly cost-effective or cost-saving mechanism to expand reach of birth dose vaccination in LMICs.

12.
Transplant Direct ; 8(8): e1345, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37077731

RESUMO

Prevalence of concurrent liver diseases among liver transplant recipients and impact on posttransplant outcomes are unknown. Methods: This retrospective study included adult liver transplants between January 1' 1985' and December 31' 2019' from the Australian and New Zealand Liver and Intestinal Transplant Registry. Up to 4 liver disease causes were recorded for each transplant; concurrent liver diseases were defined as >1 liver disease indication for transplantation, excluding hepatocellular carcinoma. Impact on posttransplant survival was determined using Cox regression. Results: A total of 840 (15%) of 5101 adult liver transplant recipients had concurrent liver diseases. Recipients with concurrent liver diseases were more likely male (78% versus 64%) and older (mean age 52 versus 50 y). A higher proportion of liver transplants for hepatitis B (12% versus 6%), hepatitis C (33% versus 20%), alcohol liver disease (23% versus 13%), and metabolic-associated fatty liver disease (11% versus 8%, all P < 0.001) were identified when all indications were included than with primary diagnosis only. The number and proportion of liver transplants performed for concurrent liver diseases have increased from 8 (6%) during Era 1 (1985-1989) to 302 (20%) during Era 7 (2015-2019; P < 0.001). Concurrent liver diseases were not associated with increased posttransplant mortality (adjusted hazard ratio, 0.98, 95% confidence interval, 0.84-1.14). Conclusions: Concurrent liver diseases are increasing among adult liver transplant recipients in Australia and New Zealand; however, they do not appear to impact posttransplant survival. Reporting all liver disease causes in the transplant registry reports provides more accurate estimates of liver disease burden.

13.
J Viral Hepat ; 28(6): 925-933, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33662159

RESUMO

An estimated 18% of people living with chronic hepatitis B (CHB) in Australia were born in China. While guideline-based care, including regular clinical monitoring and timely treatment, prevent CHB-related cirrhosis, cancer and deaths, over three-quarters of people with CHB do not receive guideline-based care in Australia. This qualitative study aimed to identify enablers to engagement in CHB clinical management among ethnic Chinese people attending specialist care. Participants self-identified as of Chinese ethnicity and who attended specialist care for CHB clinical management were interviewed in Melbourne in 2019 (n = 30). Semi-structured interviews covered experiences of diagnosis and engagement in clinical management services, and advice for people living with CHB. Interviews were recorded with consent; data were transcribed verbatim and thematically analysed. Receiving clear information about the availability of treatment and/or the necessity of long-term clinical management were the main enablers for participants to engage in CHB clinical management. Additional enablers identified to maintain regular clinical monitoring included understanding CHB increases risks of cirrhosis and liver cancer, using viral load indicators to visualize disease status in patient-doctor communication; expectations from family, peer group and medical professionals; use of a patient recall system; availability of interpreters or multilingual doctors; and largely subsidized healthcare services. In conclusion, to support people attending clinical management for CHB, a holistic response from community, healthcare providers and the public health sector is required. There are needs for public health programmes directed to communicate (i) CHB-related complications; (ii) availability of effective and cheap treatment; and that (iii) long-term engagement with clinical management and its benefits.


Assuntos
Hepatite B Crônica , Hepatite B , Austrália/epidemiologia , China/epidemiologia , Etnicidade , Hepatite B Crônica/tratamento farmacológico , Humanos
14.
J Viral Hepat ; 28(7): 1003-1010, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33749097

RESUMO

The clinical utility of quantifying hepatitis B surface antigen (qHBsAg) levels in African subjects with chronic hepatitis B virus (HBV) infection has been poorly documented. From a multicentre cohort of 944 HBV-infected African patients, we aimed to assess whether qHBsAg alone can accurately identify i) those in a HBeAg-negative chronic HBV infection phase at low risk of liver disease progression and ii) those in need of antiviral therapy according to the 2017 EASL guidelines. We analysed 770 HBV mono-infected treatment-naïve patients, mainly males (61%) from West Africa (92%), median age 35 years (IQR: 30-44), median HBV DNA: 95.6 IU/ml (10.0-1,300.0), median qHBsAg 5,498 IU/ml (1,171-13,000) and HBeAg-pos 38 (5%). A total of 464/770 (60.2%) patients were classified as HBeAg-negative chronic infection (median age 36 years (31-46), median ALT 23 IU/l (18-28), median HBV-DNA 33.5 IU/ml (3.8-154.1), median LSM 4.8 kPa (4.1-5.8)) and qHBsAg levels had poor accuracy to identify these subjects with an AUROC at 0.58 (95%CI: 0.54-0.62), sensitivity 55.0% and specificity 55.6%; 118/770 (15.3%) patients were eligible for treatment according to the 2017 EASL criteria. qHBsAg correlated poorly with HBV DNA and had poor accuracy to select patients for antiviral therapy with an AUROC at 0.54 (0.49-0.60), sensitivity 46.6% and specificity 46.9%. In African treatment-naïve HBV-infected subjects, the clinical utility of qHBsAg to identify subjects in HBeAg-negative infection phase or subjects eligible for antiviral therapy seems futile. Whether qHBsAg levels can be used as a predictor of long-term liver complications in Africa needs to be further investigated.


Assuntos
Hepatite B Crônica , Hepatite B , Adulto , DNA Viral , Antígenos de Superfície da Hepatite B , Antígenos E da Hepatite B , Vírus da Hepatite B/genética , Hepatite B Crônica/diagnóstico , Hepatite B Crônica/tratamento farmacológico , Humanos , Masculino
15.
Aust J Gen Pract ; 49(9): 599-604, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32864675

RESUMO

METHOD: Data from qualitative semi-structured interviews with 19 participants from primary care settings were thematically analysed. RESULTS: Critical elements in providing clinical care in primary care settings were identified at an organisational and provider level. A supportive organisational culture included leadership, a multidisciplinary team approach, community engagement and cultural competency, while provider-related issues included authorisation to prescribe, access to linguistic and cultural mediators and effective relationships with relevant specialist services. DISCUSSION: The research identified practice leadership, organisational culture and a patient focus supported hepatitis B clinical management transitioning from specialist to primary care services.


Assuntos
Hepatite B/terapia , Adulto , Gerenciamento Clínico , Feminino , Medicina Geral/métodos , Humanos , Entrevistas como Assunto/métodos , Masculino , Pessoa de Meia-Idade , New South Wales , Cultura Organizacional , Pesquisa Qualitativa , Encaminhamento e Consulta , Inquéritos e Questionários , Vitória
16.
Lancet Glob Health ; 8(7): e931-e941, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32562649

RESUMO

BACKGROUND: Hepatitis B causes more than 800 000 deaths globally each year. Perinatal infections are a major driver of this burden but can be prevented by vaccination within 24 h of birth. Currently, only 44% of newborn babies in low-income and middle-income countries (LMICs) receive a timely birth dose. We investigated the effects and cost-effectiveness of implementing ambient storage of hepatitis B vaccines under a controlled temperature chain (CTC) protocol and the use of compact prefilled auto-disable (CPAD) devices for community births. METHODS: In this mathematical modelling study of perinatal hepatitis B transmission and disease progression, we estimated the coverage impact and cost-effectiveness of implementing CTC and CPAD interventions in the six Global Burden of Disease (GBD) regions containing LMICs. Combinations of four different scenarios of birth dose delivery strategies (cold chain, CTC) and interventions (needle and syringe, CPAD) were modelled across facility or community birth locations. We also estimated the minimum cost and most cost-effective strategy to achieve the WHO 90% hepatitis B birth dose coverage target in GBD regions and in 46 LMICs with a reported coverage of less than 90%. FINDINGS: Current delivery protocols achieved a maximum coverage of 65% (IQR 64-65) across GBD regions. Reaching 90% hepatitis B birth dose coverage across all GBD regions was estimated to cost a minimum of US$687·5 million per annum ($494·0 million more than the estimated current expenditure), of which $516·5 million (75%) was required for CTC and CPAD interventions. Reaching 90% coverage in this way was estimated to be cost saving in five of the six regions (and in 40 of 46 LMICs individually assessed) due to the disease costs averted, with the cost per disability-adjusted life-years averted being less than $83·27 otherwise. INTERPRETATION: Hepatitis B birth dose coverage of 90% is unlikely to be reached under current protocols. CTC and CPAD vaccine strategies present cost-effective solutions to overcome coverage barriers. FUNDING: The Burnet Institute.


Assuntos
Países em Desenvolvimento , Armazenamento de Medicamentos/métodos , Vacinas contra Hepatite B/administração & dosagem , Hepatite B/prevenção & controle , Cobertura Vacinal/estatística & dados numéricos , Custos e Análise de Custo , Armazenamento de Medicamentos/economia , Feminino , Objetivos , Programas Gente Saudável , Hepatite B/epidemiologia , Hepatite B/transmissão , Humanos , Recém-Nascido , Transmissão Vertical de Doenças Infecciosas/prevenção & controle , Modelos Teóricos , Gravidez , Temperatura
17.
Aust J Gen Pract ; 49(1-2): 66-69, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32008273

RESUMO

BACKGROUND AND OBJECTIVES: In Australia, over a third of individuals living with chronic hepatitis B (CHB) remain undiagnosed. Evidence suggests general practitioners (GPs) can be uncertain regarding whom to test. The aim of this study was to evaluate an educational resource for improving GPs' knowledge about whom to test for CHB. METHOD: Following a 2014 baseline survey that identified gaps in CHB knowledge among GPs in Victoria, an educational resource package was developed. Using a follow-up survey, the resource was evaluated by comparing the before-and-after CHB-related knowledge. RESULTS: Sixty-five GPs responded to both the baseline and follow-up survey. Their knowledge of populations at high risk of CHB who require testing was significantly greater following the intervention than at baseline. DISCUSSION: Concise, clear and practical resources can support GPs when identifying whom to test for hepatitis B.


Assuntos
Educação Médica Continuada/normas , Clínicos Gerais/normas , Hepatite B/psicologia , Transferência de Experiência , Adulto , Idoso , Competência Clínica/normas , Competência Clínica/estatística & dados numéricos , Educação Médica Continuada/estatística & dados numéricos , Feminino , Clínicos Gerais/estatística & dados numéricos , Hepatite B/terapia , Humanos , Masculino , Pessoa de Meia-Idade , Atenção Primária à Saúde/métodos , Atenção Primária à Saúde/tendências , Pesquisa Qualitativa , Inquéritos e Questionários , Vitória
18.
Sex Health ; 16(4): 358-366, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31256771

RESUMO

Background A priority area in the 2016 Victorian Hepatitis B Strategy is to increase diagnostic testing. This study describes hepatitis B testing and positivity trends in Victoria between 2011 and 2016 using data from a national laboratory sentinel surveillance system. METHODS: Line-listed diagnostic and monitoring hepatitis B testing data among Victorian individuals were collated from six laboratories participating in the Australian Collaboration for Coordinated Enhanced Sentinel Surveillance (ACCESS) of sexually transmissible infections and blood-borne viruses. Diagnostic tests included hepatitis B surface antigen (HBsAg)-only tests and guideline-based hepatitis B tests (defined as a single test event for HBsAg, hepatitis B surface antibody and hepatitis B core antibody). Using available data, the outcomes of testing and/or infection were further classified. Measures reported include the total number of HBsAg and guideline-based tests conducted and the proportion positive, classified as either HBsAg positive or chronic hepatitis B infection. RESULTS: The number of HBsAg tests decreased slightly each year between 2011 and 2016 (from 91043 in 2011 to 79664 in 2016; P < 0.001), whereas the number of guideline-based hepatitis B tests increased (from 8732 in 2011 to 16085 in 2016; P <0.001). The proportion of individuals classified as having chronic infection decreased from 25% in 2011 to 7% in 2016, whereas the proportion classified as susceptible and immune due to vaccination increased (from 29% to 39%, and from 27% to 34%, respectively; P < 0.001). CONCLUSIONS: The study findings indicate an increased uptake of guideline-based hepatitis B testing. The ongoing collection of testing data can help monitor progress towards implementation of the Victorian Hepatitis B Strategy.


Assuntos
Anticorpos Anti-Hepatite B/imunologia , Antígenos do Núcleo do Vírus da Hepatite B/imunologia , Antígenos de Superfície da Hepatite B/imunologia , Hepatite B Crônica/diagnóstico , Testes Sorológicos/tendências , Estudos de Coortes , Controle de Doenças Transmissíveis , Feminino , Hepatite B/diagnóstico , Hepatite B/epidemiologia , Hepatite B/imunologia , Hepatite B/prevenção & controle , Vacinas contra Hepatite B/uso terapêutico , Hepatite B Crônica/epidemiologia , Hepatite B Crônica/imunologia , Hepatite B Crônica/prevenção & controle , Humanos , Masculino , Guias de Prática Clínica como Assunto , Estudos Retrospectivos , Vigilância de Evento Sentinela , Vitória/epidemiologia
19.
Lancet Gastroenterol Hepatol ; 4(2): 135-184, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30647010

RESUMO

Viral hepatitis is a major public health threat and a leading cause of death worldwide. Annual mortality from viral hepatitis is similar to that of other major infectious diseases such as HIV and tuberculosis. Highly effective prevention measures and treatments have made the global elimination of viral hepatitis a realistic goal, endorsed by all WHO member states. Ambitious targets call for a global reduction in hepatitis-related mortality of 65% and a 90% reduction in new infections by 2030. This Commission draws together a wide range of expertise to appraise the current global situation and to identify priorities globally, regionally, and nationally needed to accelerate progress. We identify 20 heavily burdened countries that account for over 75% of the global burden of viral hepatitis. Key recommendations include a greater focus on national progress towards elimination with support given, if necessary, through innovative financing measures to ensure elimination programmes are fully funded by 2020. In addition to further measures to improve access to vaccination and treatment, greater attention needs to be paid to access to affordable, high-quality diagnostics if testing is to reach the levels needed to achieve elimination goals. Simplified, decentralised models of care removing requirements for specialised prescribing will be required to reach those in need, together with sustained efforts to tackle stigma and discrimination. We identify key examples of the progress that has already been made in many countries throughout the world, demonstrating that sustained and coordinated efforts can be successful in achieving the WHO elimination goals.


Assuntos
Gastroenterologia/organização & administração , Saúde Global/economia , Hepatite/prevenção & controle , Hepatite/virologia , Adolescente , Adulto , Criança , Pré-Escolar , Doenças Transmissíveis/epidemiologia , Doenças Transmissíveis/mortalidade , Efeitos Psicossociais da Doença , Atenção à Saúde/métodos , Feminino , Saúde Global/normas , Infecções por HIV/mortalidade , Acessibilidade aos Serviços de Saúde , Hepacivirus/isolamento & purificação , Hepatite/epidemiologia , Hepatite/mortalidade , Hepatite B/epidemiologia , Hepatite B/mortalidade , Hepatite B/prevenção & controle , Hepatite B/transmissão , Vírus da Hepatite B/isolamento & purificação , Hepatite C/epidemiologia , Hepatite C/mortalidade , Hepatite C/prevenção & controle , Hepatite C/transmissão , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Prevalência , Tuberculose/mortalidade , Vacinação/normas , Organização Mundial da Saúde , Adulto Jovem
20.
J Gastroenterol Hepatol ; 34(1): 40-48, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30151932

RESUMO

Viral hepatitis affects more than 320 million people globally, leading to significant morbidity and mortality due to liver failure and hepatocellular carcinoma (HCC). More than 248 million people (3.2% globally) are chronically infected with hepatitis B virus (HBV), and an estimated 80 million people (1.1% globally) are chronically infected with hepatitis C virus (HCV). In 2015, more than 700 000 deaths were directly attributable to HBV, and nearly 500 000 deaths were attributable to HCV infection; 2-5% of HBV-infected people develop HCC per annum irrespective of the presence of cirrhosis, whereas 1-5% HCV-infected people with advanced fibrosis develop HCC per annum. The rapidly escalating global mortality related to HBV and HCV related viral hepatitis to be the 7th leading cause of death worldwide in 2013, from 10th leading cause in 1990. Australia, New Zealand, and Pacific Island Countries and Territories fall within the World Health Organization Western Pacific Region, which has a high prevalence of viral hepatitis and related morbidity, particularly HBV. Remarkably, in this region, HBV-related mortality is greater than for tuberculosis, HIV infection, and malaria combined. The region provides a unique contrast in viral hepatitis prevalence, health system resources, and approaches taken to achieve World Health Organization global elimination targets for HBV and HCV infection. This review highlights the latest evidence in viral hepatitis epidemiology and explores the health resources available to combat viral hepatitis, focusing on the major challenges and critical needs to achieve elimination in Australia, New Zealand, and Pacific Island Countries and Territories.


Assuntos
Carcinoma Hepatocelular/epidemiologia , Hepatite Viral Humana/epidemiologia , Hepatite Viral Humana/prevenção & controle , Cirrose Hepática/epidemiologia , Neoplasias Hepáticas/epidemiologia , Australásia/epidemiologia , Carcinoma Hepatocelular/virologia , Objetivos , Hepatite Viral Humana/diagnóstico , Hepatite Viral Humana/tratamento farmacológico , Humanos , Cirrose Hepática/virologia , Neoplasias Hepáticas/virologia , Programas de Rastreamento , Organização Mundial da Saúde
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