Tenofovir As Prevention Of Hepatitis b Mother-to-child Transmission
Hepatitis B Chronic InfectionPregnancyThe World Health Organization recommends that all high endemic countries for HBV infection based their mother to child transmission prevention strategies on vaccination of all children and administration of immunoglobulins (HBIG) to infants born to infected mothers in the first 24 hours after birth. Lack of access to antenatal screening and to HBIG significantly results in failure of this strategy in many countries. Moreover, despite sero-vaccination, 10 to 15% of infants of mothers that are positive for HBsAg and HBeAg are still infected, as high levels of HBV replication occurring in the third quarter of pregnancy act as a major risk factor. The objective of this study is to assess the effectiveness of an operational strategy to prevent HBV mother-to-child transmission (MTCT) in Cambodia based on the use of rapid tests HBs Ag and HBe Ag to screen HBV infection and a treatment by TDF for patients with a positive HBeAg test with a "test and treat" strategy for those seen for Antenatal Care (ANC) from 24 weeks of amenorrhea. In all cases, vaccination of the newborn will be carried out according to the national protocol in Cambodia i.e. 4 injections at 24 hours, 6, 10 and 14 weeks of age. A phase IV multicenter observational and interventional non randomized prospective study will be conducted in 4 maternity in Cambodia. The primary outcome will be the proportion of active HBV infection in new-born at 6 months of life estimated by HBs Ag positivity. The study will aim to document the acceptability and the operational implementation of the study using rapid tests usable in all health centers and a drug available in all the country thanks to HIV national program. The results will be helpful for Cambodian government in order to implement guidelines and algorithm follow-up for HBV-infected pregnant women.
Transforming the Cascade Of Hepatitis C Care
Hepatitis CChronicSeveral factors are barriers to effective Hepatitis C care: 1) The majority of Hepatitis C Virus (HCV)-positive patients (45-85 percent) are unaware that they are infected; 2) Only a small minority of those in need of treatment receive it; 3) Members of minorities and older patients are even less likely to receive needed care; and 4) Until recently, even those who were treated had a low chance of clearing the virus or achieving cure; 5) It is possible that older attitudes and expectation of futility might continue to persist among patients and provider in primary care settings. Community Health Centers are often the most culturally appropriate and accessible choices, particularly for underserved populations, with the benefit of ongoing trust and relationships with patients. Therefore, these can be ideal places to deliver complex HCV care if they possess the needed expertise. However, most community-based primary care and community health centers lack access to Hepatitis C evaluation and treatment services, leading to a major public health problem. Thus, investigators propose to implement and evaluate a pragmatic trial to implement and evaluate a multi-disciplinary model for HCV treatment at Currently, the treatment initiation rates at each of these sites is estimated as less than 10%. The investigators hypothesize that our project will increase the rate of participation in all the steps of the HCV care cascade and ultimately lead to more than doubled rates of treatment uptake
A Study to Assess Resistance and Durability of Response to ABT-493 and/or ABT-530
Hepatitis CThis was a long-term follow-up study to evaluate the durability of sustained virologic response (SVR), persistence of direct-acting antiviral agent (DAA) resistance, and clinical outcomes for participants who received glecaprevir (ABT-493) and/or pibrentasvir (ABT-530) in prior AbbVie Phase 2 or 3 clinical studies for the treatment of chronic hepatitis C virus (HCV) infection.
Evaluation of Paternal, Maternal and Obstetric Factors Leading to the Hepatitis B Immunization Failure...
Hepatitis B InfectionGlobally, hepatitis B virus (HBV) infection is the most common form of chronic hepatitis. There are still a lot of uncertainties on how infants acquired HBV leading to the development of chronic HBV infection despite active and passive immunoprophylaxis. The investigators would like to carry out a prospective study to answer the following questions: the paternal, maternal and obstetric factors leading to immunoprophylaxis failure the prevalence of immunoprophylaxis failure in Hong Kong
Drug Interaction Potential Between Dolutegravir and Simeprevir in HIV/HCV Seronegative Volunteers...
HIVHepatitis CThe investigator believes simeprevir concentrations are unchanged when administered in combination with dolutegravir relative to administration alone. The investigator believes dolutegravir concentrations are unchanged when administered in combination with simeprevir. Additionally, the investigator believes simeprevir and dolutegravir are safe when administered alone and in combination.
Real World Evidence of the Effectiveness of Paritaprevir/r - Ombitasvir, ± Dasabuvir, ± Ribavirin...
Chronic Hepatitis CThe interferon-free combination regimen of paritaprevir/ritonavir/ombitasvir with or without dasabuvir (ABBVIE REGIMEN) ± ribavirin (RBV) for the treatment of chronic hepatitis C (CHC) has been shown to be safe and effective in randomized controlled clinical trials with strict inclusion and exclusion criteria under well-controlled conditions. This observational study is the first effectiveness research examining the ABBVIE REGIMEN ± RBV, used according to the local label, under real-world conditions in Greece in a clinical practice patient population.
T Regulatory Cells in Hepatitis c Infected Patients
Hepatitis CChronic hepatitis C infection is a global worldwide health problem with an increasing burden year-by-year, particularly in areas with a high endemicity like Egypt . The World Health Organization estimates that approximately 200 million people worldwide are infected with hepatitis c virus. In Egypt, it was estimated that 15 % of Egyptians have serologic evidence of hepatitis C viral infection .
Effectiveness, Safety and Clinical Outcomes of Paritaprevir/Ombitasvir/r+Dasabuvir 8 Weeks
Hepatitis C InfectionThe aim of the study is to evaluate in clinical practice the efficacy and safety of ombitasvir/paritaprevir/ ritonavir and dasabuvir administered for 8 weeks in treatment-naïve participants with genotype 1b hepatitis C virus (HCV).
Optimizing HBV Management During Anti-CD20 Antibodies
Liver DysfunctionImmune Suppression1 moreHepatitis B virus (HBV) reactivation is common during anti-CD20 containing chemotherapy, even in HBsAg-negative patients with only prior HBV exposure. The optimal timing of commencing antiviral therapy and the interval of clinical monitoring is uncertain. 25% of the Hong Kong population has prior HBV exposure. The investigators plan monitor this cohort of patients and determine (1) the optimal time point for starting antiviral therapy based on the progression of HBV reactivation, and (2) the optimal interval of clinical monitoring.
Cross Sectional Survey on the Burden and Impacts of Chronic Hepatitis B in the Rural Area of Niakhar,...
Chronic Hepatitis bThis study aims at estimating the prevalence of chronic hepatitis B virus (HBV) infection in rural Senegal (area of Niakhar) and at evaluating the associated burden in terms of both health-related and socio-economic consequences.