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Hepatitis A vaccine long time efficacy

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https://www.readbyqxmd.com/read/27535719/impact-and-long-term-protection-of-hepatitis-b-vaccination-17-years-after-universal-hepatitis-b-vaccination-in-tunisia
#1
H Chaouch, W Hachfi, I Fodha, O Kallala, S Saadi, A Bousaadia, F Lazrag, I Bougmiza, M Aouni, A Trabelsi, E Ben Jazia, A Letaief
Hepatitis B virus (HBV) vaccination has been part of the Expanded Programme of Immunization (EPI) in Tunisia since 1995. The aim of this study was to evaluate, for the first time, the impact of mass vaccination in Tunisia 17 years after this programme was implemented, and in parallel, assess the long-term persistence of anti-HBs antibody in the vaccinated Tunisian population. A total of 1422 students were recruited (703 vaccinated, 719 non-vaccinated). HBV seromarkers were checked. None of the students from either group had positive HBsAg...
August 18, 2016: Epidemiology and Infection
https://www.readbyqxmd.com/read/27120156/a-single-injection-of-anti-hiv-1-antibodies-protects-against-repeated-shiv-challenges
#2
Rajeev Gautam, Yoshiaki Nishimura, Amarendra Pegu, Martha C Nason, Florian Klein, Anna Gazumyan, Jovana Golijanin, Alicia Buckler-White, Reza Sadjadpour, Keyun Wang, Zachary Mankoff, Stephen D Schmidt, Jeffrey D Lifson, John R Mascola, Michel C Nussenzweig, Malcolm A Martin
Despite the success of potent anti-retroviral drugs in controlling human immunodeficiency virus type 1 (HIV-1) infection, little progress has been made in generating an effective HIV-1 vaccine. Although passive transfer of anti-HIV-1 broadly neutralizing antibodies can protect mice or macaques against a single high-dose challenge with HIV or simian/human (SIV/HIV) chimaeric viruses (SHIVs) respectively, the long-term efficacy of a passive antibody transfer approach for HIV-1 has not been examined. Here we show, on the basis of the relatively long-term protection conferred by hepatitis A immune globulin, the efficacy of a single injection (20 mg kg(-1)) of four anti-HIV-1-neutralizing monoclonal antibodies (VRC01, VRC01-LS, 3BNC117, and 10-1074 (refs 9 - 12)) in blocking repeated weekly low-dose virus challenges of the clade B SHIVAD8...
May 5, 2016: Nature
https://www.readbyqxmd.com/read/26910304/the-efficacy-of-hepatitis-b-vaccination-program-in-upper-egypt-flow-cytometry-and-the-evaluation-of-long-term-immunogenicity
#3
Nahed A Makhlouf, Ahlam M Farghaly, Saad Zaky, Hebat-Alla G Rashed, Nagla H Abu Faddan, Douaa Sayed, Omnia El-Badawy, Noha Afifi, Wafaa S Hamza, Yousseria El-Sayed
Anti-HBs levels wanes with time. Many studies discussed the B cell response to HBV vaccine. However, the data about memory T cell response are limited. To evaluate the efficacy of hepatitis B vaccine via evaluating anti-HBs levels and HBsAg specific memory T-lymphocytes through descriptive study. The study was conducted in a tertiary care setting. This study included 440 vaccinated persons during infancy. Group I: 6 to less than 10 years old; Group II: 10 to less than 14 years old; Group III: 14 to less than 17 years old; Group IV: 17 years old...
September 2016: Journal of Medical Virology
https://www.readbyqxmd.com/read/26348993/long-term-efficacy-of-hepatitis-b-vaccination-as-post-transplant-prophylaxis-in-hepatitis-b-surface-antigen-hbsag-positive-recipients-and-hbsag-negative-recipients-of-anti-hepatitis-b-core-positive-grafts
#4
Atsushi Yoshizawa, Noriyo Yamashiki, Yoshihide Ueda, Toshimi Kaido, Hideaki Okajima, Hiroyuki Marusawa, Tsutomu Chiba, Shinji Uemoto
AIM: Hepatitis B virus (HBV) reactivation after liver transplantation in HBV patients, or in HBV negative recipients of anti-hepatitis B core (HBc) positive grafts, has been prevented by prophylactic use of hepatitis B immunoglobulin (HBIG) and/or nucleoside/nucleotide analogs (NA). Vaccination against HBV is an alternative that may provide a chance to discontinue prophylaxis by producing anti-hepatitis B surface (HBs) antibodies. METHODS: We retrospectively reviewed 40 HBV positive recipients (HBV+ group) and 27 HBV negative recipients of anti-HBc positive grafts (HBV-/anti-HBc+ graft group), who were administrated double-dose hepatitis B vaccination...
May 2016: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/26057138/the-doses-of-10-%C3%AE-g-should-replace-the-doses-of-5-%C3%AE-g-in-newborn-hepatitis-b-vaccination-in-china-a-cost-effectiveness-analysis
#5
Juan Yin, Zhenhao Ji, Peifeng Liang, Qian Wu, Fuqiang Cui, Fuzhen Wang, Xiaofeng Liang, Guihua Zhuang
OBJECTIVE: To identify whether Chinese current series of three 5 μg doses for newborn hepatitis B vaccination should be replaced by the series of three 10 μg doses. METHODS: A cost-effectiveness analysis was conducted from the societal perspective based on the constructed decision tree-Markov model. Model parameters were estimated from published literatures, government documents and our surveys. The expected cost and effectiveness were compared between the 3-dose 5 μg series (the 5 μg strategy) and the 3-dose 10 μg series (the 10 μg strategy), and the incremental cost-effectiveness ratio (ICER, additional cost per quality-adjusted life-years gained) was calculated...
July 17, 2015: Vaccine
https://www.readbyqxmd.com/read/25976545/development-of-a-candidate-influenza-vaccine-based-on-virus-like-particles-displaying-influenza-m2e-peptide-into-the-immunodominant-region-of-hepatitis-b-core-antigen-broad-protective-efficacy-of-particles-carrying-four-copies-of-m2e
#6
Liudmila M Tsybalova, Liudmila A Stepanova, Victor V Kuprianov, Elena A Blokhina, Marina V Potapchuk, Alexander V Korotkov, Andrey N Gorshkov, Marina A Kasyanenko, Nikolai V Ravin, Oleg I Kiselev
A long-term objective when designing influenza vaccines is to create one with broad cross-reactivity that will provide effective control over influenza, no matter which strain has caused the disease. Here we summarize the results from an investigation into the immunogenic and protective capacities inherent in variations of a recombinant protein, HBc/4M2e. This protein contains four copies of the ectodomain from the influenza virus protein M2 (M2e) fused within the immunodominant loop of the hepatitis B virus core antigen (HBc)...
June 26, 2015: Vaccine
https://www.readbyqxmd.com/read/25851052/efficacy-of-maternal-tenofovir-disoproxil-fumarate-in-interrupting-mother-to-infant-transmission-of-hepatitis-b-virus
#7
Huey-Ling Chen, Chien-Nan Lee, Chin-Hao Chang, Yen-Hsuan Ni, Ming-Kwang Shyu, Shih-Ming Chen, Jen-Jan Hu, Hans Hsienhong Lin, Lu-Lu Zhao, Shu-Chi Mu, Ming-Wei Lai, Chyi-Long Lee, Hsien-Ming Lin, Ming-Song Tsai, Jenn-Jeih Hsu, Ding-Shinn Chen, K Arnold Chan, Mei-Hwei Chang
UNLABELLED: The efficacy and safety of maternal tenofovir disoproxil fumarate (TDF) in reducing mother-to-infant hepatitis B virus (HBV) transmissions is not clearly understood. We conducted a prospective, multicenter trial and enrolled 118 hepatitis B surface antigen (HBsAg)- and hepatitis B e antigen-positive pregnant women with HBV DNA ≥7.5 log10 IU/mL. The mothers received no medication (control group, n = 56, HBV DNA 8.22 ± 0.39 log10 IU/mL) or TDF 300 mg daily (TDF group, n = 62, HBV DNA 8...
August 2015: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/25843269/the-long-term-efficacy-13-23-years-of-a-plasma-derived-hepatitis-b-vaccine-in-highly-endemic-areas-in-china
#8
Feng Wang, Liping Shen, Fuqiang Cui, Shuang Zhang, Hui Zheng, Yong Zhang, Xiaofeng Liang, Fuzhen Wang, Shengli Bi
OBJECTIVE: To evaluate the long-term effectiveness of the plasma-derived hepatitis B vaccine that has been applied widely in five areas of China where HBV prevalence was highly endemic. METHOD: A cross-sectional investigation was conducted in 2009 at five HBV surveillance sites around China. The target study subjects of 6772 were born between 1986 and 1996 and received plasma-derived HBV vaccine. Serum samples were collected to test for HBV markers using the microparticle enzyme immunoassay...
May 28, 2015: Vaccine
https://www.readbyqxmd.com/read/25738667/long-term-efficacy-of-a-hepatitis-e-vaccine
#9
RANDOMIZED CONTROLLED TRIAL
Jun Zhang, Xue-Feng Zhang, Shou-Jie Huang, Ting Wu, Yue-Mei Hu, Zhong-Ze Wang, Hua Wang, Han-Min Jiang, Yi-Jun Wang, Qiang Yan, Meng Guo, Xiao-Hui Liu, Jing-Xin Li, Chang-Lin Yang, Quan Tang, Ren-Jie Jiang, Hui-Rong Pan, Yi-Min Li, J Wai-Kuo Shih, Mun-Hon Ng, Feng-Cai Zhu, Ning-Shao Xia
BACKGROUND: Hepatitis E virus (HEV) is a leading cause of acute hepatitis. The long-term efficacy of a hepatitis E vaccine needs to be determined. METHODS: In an initial efficacy study, we randomly assigned healthy adults 16 to 65 years of age to receive three doses of either a hepatitis E vaccine (vaccine group; 56,302 participants) or a hepatitis B vaccine (control group; 56,302 participants). The vaccines were administered at 0, 1, and 6 months, and the participants were followed for 19 months...
March 5, 2015: New England Journal of Medicine
https://www.readbyqxmd.com/read/25454089/the-long-term-efficacy-of-chinese-hamster-ovary-cell-derived-hepatitis-b-vaccine-after-being-used-for-14-16-years-in-chinese-rural-communities
#10
Feng Wang, Jingchen Ma, Zhiyong Hao, Zhiyong Zhang, Xinjiang Zhang, Zhao Gao, Shengli Bi, Liping Shen, Feng Qiu, Yuliang Zhao
OBJECTIVE: To evaluate the long-term efficacy of Chinese hamster ovary (CHO) cell derived hepatitis B vaccine after being used for 14-16 years in country community in Hebei province in China. METHOD: A cross-sectional investigation was carried out in 3 of 7 randomly selected rural communities in Zhengding County in 2013. The children who were born between 1997 and 1999 and were vaccinated with three doses of CHO-derived hepatitis B vaccine were eligible to participate in the study...
January 3, 2015: Vaccine
https://www.readbyqxmd.com/read/25389088/snp-rs7770370-in-hla-dpb1-loci-as-a-major-genetic-determinant-of-response-to-booster-hepatitis-b-vaccination-results-of-a-genome-wide-association-study
#11
Tzu-Wei Wu, Chuen-Fei Chen, Sheng-Kai Lai, Hans Hsienhong Lin, Chen-Chung Chu, Li-Yu Wang
BACKGROUND AND AIM: Hepatitis B (HB) vaccination is highly effective in reducing the risk of hepatitis B virus infection. However, breakthrough and chronic hepatitis B virus infections in vaccinated subjects raised concern about its long-term efficacy. The specific aim of the study was to explore the host genetic determinants of long-term immunological memory against HB vaccination. METHODS: We conducted a case-control study nested in a cohort of HB booster recipients who had received primary HB vaccination during infancy but failed to reside an anti-HBs titers ≥ 10 mIU/mL at the age of 15-18 years...
May 2015: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/25154638/hepatitis-b-virus-hbv-reverse-seroconversion-rs-can-be-prevented-even-in-non-responders-to-hepatitis-b-vaccine-after-allogeneic-stem-cell-transplantation-long-term-analysis-of-intervention-in-rs-with-vaccine-for-patients-with-previous-hbv-infection
#12
M Takahata, S Hashino, M Onozawa, A Shigematsu, J Sugita, K Fujimoto, T Endo, T Kondo, J Tanaka, M Imamura, T Teshima
BACKGROUND: Reactivation of hepatitis B virus (HBV) infection, reverse seroconversion (RS), is a serious complication after allogeneic stem cell transplantation (alloHSCT). We previously conducted a post-transplant hepatitis B vaccine intervention trial and demonstrated the vaccine efficacy in preventing HBV-RS. This report is an update of the hepatitis B vaccine study. METHODS: In this trial, 21 patients were enrolled and received a standard 3-dose regimen of hepatitis B vaccine after discontinuation of immunosuppressants, whereas 25 transplant recipients with previous HBV infection did not receive the vaccine and served as controls...
October 2014: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/25045817/development-of-an-hiv-vaccine-attitudes-scale-to-predict-hiv-vaccine-acceptability-among-vulnerable-populations-l-a-voices
#13
Sung-Jae Lee, Peter A Newman, Naihua Duan, William E Cunningham
BACKGROUND: Decade-long delays in successful implementation of Hepatitis B vaccines and ongoing obstacles in HPV vaccine roll-out suggest the importance of an implementation science approach to prepare for the effective translation of future HIV vaccines from clinical trials into routine practice. The objective of this study was to test HIV vaccine attitude items to develop reliable scales and to examine their association with HIV vaccine acceptability. METHODS: HIV vaccine attitude items were assessed as part of the L...
September 3, 2014: Vaccine
https://www.readbyqxmd.com/read/24853207/the-j6jfh1-strain-of-hepatitis-c-virus-infects-human-b-cells-with-low-replication-efficacy
#14
Masato Nakai, Tsukasa Seya, Misako Matsumoto, Kunitada Shimotohno, Naoya Sakamoto, Hussein H Aly
Abstract Hepatitis C virus (HCV) infection is a serious health problem worldwide that can lead to hepatocellular carcinoma or end-stage liver disease. Current treatment with pegylated interferon, ribavirin, and NS3/4A protease inhibitor would lead to a good prognosis in a large population of patients, but there is still no effective vaccine for HCV. HCV robustly infects hepatocytes in the liver. However, extrahepatic manifestations such as mixed cryoglobulinemia, a systemic immune complex-mediated disorder characterized by B-cell proliferation, which may evolve into overt B-cell non-Hodgkin's lymphoma, have been demonstrated...
August 2014: Viral Immunology
https://www.readbyqxmd.com/read/23852676/long-term-efficacy-of-the-hepatitis-b-vaccine-in-a-high-risk-group
#15
Sarah S Al Ghamdi, Hind I Fallatah, Dina M Fetyani, Jamil A Al-Mughales, Abdulhadi T Gelaidan
Chronic infection with hepatitis B virus (HBV) is a global health problem. In an attempt to control infection, worldwide HBV vaccination programs have been established. Saudi Arabia, an endemic area for HBV infection, established an HBV immunization program in 1989. This cross-sectional study evaluates the long-term protection of HBV vaccination 14-24 years after primary immunization in a high-risk group (clinical year medical students) at King Abdulaziz University Hospital in Jeddah, Saudi Arabia. All participants had complete HBV immunization at birth or in early childhood...
September 2013: Journal of Medical Virology
https://www.readbyqxmd.com/read/23651533/community-perceptions-of-a-malaria-vaccine-in-the-kintampo-districts-of-ghana
#16
Lawrence G Febir, Kwaku P Asante, Dan-Bright S Dzorgbo, Kojo A Senah, Timothy S Letsa, Seth Owusu-Agyei
BACKGROUND: Malaria remains the leading cause of morbidity and mortality in sub-Saharan Africa despite tools currently available for its control. Making malaria vaccine available for routine use will be a major hallmark, but its acceptance by community members and health professionals within the health system could pose considerable challenge as has been found with the introduction of polio vaccinations in parts of West Africa. Some of these challenges may not be expected since decisions people make are many a time driven by a complex myriad of perceptions...
2013: Malaria Journal
https://www.readbyqxmd.com/read/23577866/hepatitis-b-and-c-infection-in-international-travelers
#17
REVIEW
Douglas F Johnson, Karin Leder, Joseph Torresi
BACKGROUND: Hepatitis B and C virus (HBV and HCV) cause significant morbidity and mortality worldwide. With the rise in international travel over the last three decades, many travelers are at risk of HBV and HCV infection. METHODS: This review focuses on the epidemiology of HBV and HCV in international travelers, the modes of transmission, and the prevention of infection in travelers. RESULTS: The risk of HBV and HCV infection varies widely and depends on the prevalence of the destination country, the duration of travel, and the activities undertaken while abroad...
May 2013: Journal of Travel Medicine
https://www.readbyqxmd.com/read/23297680/randomized-controlled-trial-of-the-long-term-safety-immunogenicity-and-efficacy-of-rts-s-as02-d-malaria-vaccine-in-infants-living-in-a-malaria-endemic-region
#18
RANDOMIZED CONTROLLED TRIAL
Salim Abdulla, Nahya Salim, Francisca Machera, Richard Kamata, Omar Juma, Mwanajaa Shomari, Sulende Kubhoja, Ali Mohammed, Grace Mwangoka, Thomas Aebi, Hassan Mshinda, David Schellenberg, Terrell Carter, Tonya Villafana, Marie-Claude Dubois, Amanda Leach, Marc Lievens, Johan Vekemans, Joe Cohen, W Ripley Ballou, Marcel Tanner
BACKGROUND: The RTS,S/AS malaria candidate vaccine is being developed with the intent to be delivered, if approved, through the Expanded Programme on Immunization (EPI) of the World Health Organization. Safety, immunogenicity and efficacy of the RTS,S/AS02(D) vaccine candidate when integrated into a standard EPI schedule for infants have been reported over a nine-month surveillance period. This paper describes results following 20 months of follow up. METHODS: This Phase IIb, single-centre, randomized controlled trial enrolled 340 infants in Tanzania to receive three doses of RTS,S/AS02(D) or hepatitis B vaccine at 8, 12, and 16 weeks of age...
January 8, 2013: Malaria Journal
https://www.readbyqxmd.com/read/23272112/chronic-schistosoma-japonicum-infection-reduces-immune-response-to-vaccine-against-hepatitis-b-in-mice
#19
Lin Chen, Wen-qi Liu, Jia-hui Lei, Fei Guan, Man-jun Li, Wen-jian Song, Yong-long Li, Ting Wang
BACKGROUND: Hepatitis B and schistosomiasis are most prevalent in Africa and Asia, and co-infections of both are frequent in these areas. The immunomodulation reported to be induced by schistosome infections might restrict immune control of hepatitis B virus (HBV) leading to more severe viral infection. Vaccination is the most effective measure to control and prevent HBV infection, but there is evidence for a reduced immune response to the vaccine in patients with chronic schistosomiasis japonica...
2012: PloS One
https://www.readbyqxmd.com/read/23142301/hepatitis-b-vaccination-a-completed-schedule-enough-to-control-hbv-lifelong-milan-italy-17-18-november-2011
#20
David FitzSimons, Greet Hendrickx, Alex Vorsters, Pierre Van Damme
The Viral Hepatitis Prevention Board (VHPB) organized an international meeting in Milan in November 2011 on the question of whether completing a course of hepatitis B vaccination confers lifelong protection against hepatitis B virus infection and its complications. Presentations covered vaccine efficacy including factors influencing long-term protection; breakthrough infections; the immunological effect of natural boosting; the effectiveness of universal hepatitis B vaccination in different countries, and issues relating to national, regional and global policies on booster vaccination...
January 11, 2013: Vaccine
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