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https://www.readbyqxmd.com/read/27925503/persistence-of-protective-anti-hbs-antibody-levels-and-anamnestic-response-to-hbv-booster-vaccination-a-cross-sectional-study-among-healthcare-students-20%C3%A2-years-following-the-universal-immunization-campaign-in-italy
#1
Guglielmo Dini, Alessandra Toletone, Ilaria Barberis, Nicoletta Debarbieri, Emanuela Massa, Chiara Paganino, Francesca Bersi, Alfredo Montecucco, Cristiano Alicino, Paolo Durando
Vaccination against Hepatitis B Virus (HBV) became mandatory in Italy for all newborns and twelve years-old individuals in the 1991. The immunogenicity of HBV vaccine and the effectiveness of the universal immunization strategy have been widely demonstrated. However the need to assess the antibody concentrations above the well known serological correlate of protection for HBV infection (≥ 10 mIU/mL), established in individuals immunized with a three doses vaccination course, is still recommended in subjects exposed to occupational risks in different settings, particularly the healthcare services...
December 7, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27924688/susceptibility-to-vaccine-preventable-diseases-and-vaccination-adherence-among-healthcare-workers-in-italy-a-cross-sectional-survey-at-a-regional-acute-care-university-hospital-and-a-systematic-review
#2
Umberto Leone Roberti Maggiore, Carolina Scala, Alessandra Toletone, Nicoletta Debarbieri, Mauro Perria, Beatrice D'Amico, Alfredo Montecucco, Mariano Martini, Guglielmo Dini, Paolo Durando
Healthcare Workers (HCWs) have an increased risk both to acquire and to spread vaccine preventable diseases (VPDs) both to their colleagues and, especially, to vulnerable patients. The prevention of occupational hazards among HCWs is based on proper adoption of the standard and additional precautions, immunizations, and secondary preventive measures, such as post-exposure prophylaxis. Moreover, HCWs are often referred to as the most trusted source of vaccine-related information for their patients. In the present article, we report the findings of a cross-sectional study investigating the compliance to vaccinations among HCWs employed at the Obstetric Unit of a regional acute-care University Hospital in Northern Italy...
December 7, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27920392/knowledge-attitudes-and-practices-of-health-care-workers-about-viral-hepatitis-b-and-c-in-south-kivu
#3
Tony Akilimali Shindano, Esto Bahizire, René Fiasse, Yves Horsmans
Health-care workers (HCWs) are at risk of infections associated with accidental exposure to blood, including viral hepatitis B (HBV) and C (HCV). A survey using a questionnaire was conducted on 250 HCW in Bukavu, an eastern town of the Democratic Republic of Congo, to analyze their attitude and knowledge about these two viruses. A response rate of 86.8% (217/250) was obtained. The mean age of respondents was 39.6 ± 9.8 years, in majority from paramedical staff (66.4%) and with more than 5 years of professional experience (60...
December 5, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27917363/future-therapy-for-hepatitis-b-virus-role-of-immunomodulators
#4
REVIEW
Edward A Pham, Ryan B Perumpail, Benjamin J Fram, Jeffrey S Glenn, Aijaz Ahmed, Robert G Gish
Although currently available therapies for chronic hepatitis B virus infection can suppress viremia and provide long-term benefits for patients, they do not lead to a functional cure for most patients. Advances in our understanding of the virus-host interaction and the recent remarkable success of immunotherapy in cancer offer new and promising strategies for developing immune modulators that may become important components of a total therapeutic approach to hepatitis B, some of which are now in clinical development...
2016: Current Hepatology Reports
https://www.readbyqxmd.com/read/27911488/hepatocellular-carcinoma-as-an-emerging-morbidity-in-the-thalassemia-syndromes-a-comprehensive-review
#5
REVIEW
Hassan M Moukhadder, Racha Halawi, Maria Domenica Cappellini, Ali T Taher
The incidence of hepatocellular carcinoma (HCC) in patients with thalassemia is on the rise. The 2 well recognized HCC risk factors in thalassemia are iron overload and chronic viral infection with hepatitis C. The carcinogenicity of iron is related to its induction of oxidative damage, which results in genotoxicity, and to immunologic dysregulation, which attenuates cancer immune surveillance. Chronic hepatitis B and C infections lead to necroinflammation, which can prompt progression to HCC, but an independent role of hepatitis B virus in hepatic carcinogenesis among patients with thalassemia has not been demonstrated...
December 1, 2016: Cancer
https://www.readbyqxmd.com/read/27907975/-is-it-necessary-to-revaccinate-against-hepatitis-b-virus-when-the-titer-of-anti-hbs-drops-below-10-iu-l
#6
Pavel Polák, Petr Husa, Petr Smejkal, Jan Kamelander, Gabriela Chlupová, Miroslav Penka
Viral hepatitis B still represents a major epidemiological issue worldwide. After recombinant vaccine administration, a titer of anti-HBs antibodies ≥ 10 IU/L has long been considered to be seroprotective. Persons without this antibody level after complete vaccination are referred to as non-responders. A progressive decline in anti-HBs levels over years is also commonly seen in responders. Recently, there has been increasing evidence that the titer of anti-HBs ≥ 10 IU/L does not provide 100 % protection against infection and clinically manifest illness...
September 2016: Klinická Mikrobiologie a Infekc̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27905089/novel-paradigm-for-immunotherapy-of-ovarian-cancer-by-engaging-prophylactic-immunity-against-hepatitis-b-virus
#7
Marek Malecki, Emily Putzer, Caroline Quach, Chaitanya Dodivenaka, Xenia Tombokan
BACKGROUND: Only eight women out of one hundred diagnosed with ovarian epithelial cancers, which progressed to the clinical stage IV, survive 10 years. First line therapies: surgery, chemotherapy, and radiation therapy inflict very serious iatrogenic consequences. Passive immunotherapy of ovarian cancers offers only low efficacy. Prophylactic and therapeutic vaccines for ovarian cancers are not available. Interestingly, prophylactic vaccines for Hepatitis B Viruses (HBV) are very effective...
December 2016: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/27898721/hepatitis-b-virus-infections-and-associated-factors-among-pregnant-women-attending-antenatal-care-clinic-at-deder-hospital-eastern-ethiopia
#8
Abdi Umare, Berhanu Seyoum, Tesfaye Gobena, Tamirat Haile Mariyam
BACKGROUND: Hepatitis B virus (HBV) infection is a serious public health problem worldwide. Reports have shown that 68,600 people die of HBV infection and more than 300,000 deaths due to liver cancer secondary to hepatitis B every year globally. Women who are infected with HBV can vertically transmit the infection to their infants. This study aims to determine the prevalence of HBV infection and associated factors among pregnant women. METHODS AND FINDINGS: A hospital-based cross-sectional study was conducted among pregnant women who attended antenatal care clinic (ANC) for routine pregnancy check-up between 18 March 2015 and 15 May 2015...
2016: PloS One
https://www.readbyqxmd.com/read/27894721/vaccination-against-hepatitis-b-virus-among-people-who-inject-drugs-a-20year-experience-from-a-swedish-needle-exchange-program
#9
M Alanko Blomé, P Björkman, L Flamholc, H Jacobsson, A Widell
BACKGROUND: People who inject drugs (PWID) are at particular risk of hepatitis B virus (HBV) acquisition, but often have poor access or adherence to HBV vaccination. Vaccination against HBV has been offered at a major Swedish needle exchange program (NEP) since 1994. The aim of this study was to evaluate vaccine completion and response rates, and the effect of sequential booster doses to non-responders to the standard vaccination schedule. METHODS: PWID enrolled in the NEP 1994-2013, without serological markers for HBV at baseline (negative for HBsAg/anti-HBc/anti-HBs), were offered a three-dose standard intramuscular vaccination schedule (Engerix®-B, GSK, 20μg/mL, intended to be received at months 0, 1 and 6)...
November 25, 2016: Vaccine
https://www.readbyqxmd.com/read/27894717/hepatitis-b-vaccine-alone-may-be-enough-for-preventing-hepatitis-b-virus-transmission-in-neonates-of-hbsag-hbeag-mothers
#10
Ying Lu, Xiao-Feng Liang, Fu-Zhen Wang, Ling Yan, Rong-Cheng Li, Yan-Ping Li, Feng-Cai Zhu, Xiang-Jun Zhai, Jie Li, Hui Zhuang
BACKGROUND AND AIM: To prospectively evaluate the efficacy of vaccine alone compared with vaccine plus HBIG for preventing HBV transmission in neonates of HBsAg (+)/HBeAg (-) mothers. METHODS: Combined immunization is currently recommended for neonates of HBsAg (+) mothers in China. As a result, a randomized design is infeasible due to ethical reasons. In practice, Guangxi Zhuang Autonomous Region and Jiangsu Province implement vaccine alone and vaccine plus HBIG strategies for neonates born to HBsAg (+)/HBeAg (-) mothers, respectively...
November 25, 2016: Vaccine
https://www.readbyqxmd.com/read/27892847/international-adoption-from-ethiopia-an-overview-of-the-health-status-at-arrival-in-belgium
#11
Lydia Van Kesteren, Marek Wojciechowski
BACKGROUND: Ethiopia is a densely populated country with a fast growing economy. Still socioeconomic and health issues render many children parentless. One thousand and twenty eight Ethiopian children have been adopted in Belgium from September 2005 to September 2015. Little has been published about their health status at arrival. METHODS: Three hundred and fifteen children adopted from Ethiopia were clinically evaluated at the Institute of Tropical Medicine in Antwerp from 1 January 2008 until 31 December 2014...
November 28, 2016: Acta Clinica Belgica
https://www.readbyqxmd.com/read/27892722/present-and-future-dna-vaccines-for-chronic-hepatitis-b-treatment
#12
Lucyna Cova
With at least 240 million hepatitis B virus (HBV) carriers worldwide, being at a high risk of cirrhosis and hepatocellular carcinoma (HCC), chronic hepatitis B remains a major public health issue. Because current antiviral treatments are only virostatic, there is an urgent need for the development of innovative anti-HBV strategies leading to the functional cure. In this context, DNA-based vaccines appear as a promising approach. Area covered: In this review, the authors summarize the pertinent features of DNA vaccines for chronic hepatitis B therapy...
November 28, 2016: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/27890663/hepatitis-b-a-cross-sectional-survey-of-knowledge-attitudes-and-practices-amongst-backpackers-in-thailand
#13
Georgina Frew, Elizabeth McGeorge, Sabrina Grant, Gilles de Wildt
BACKGROUND: In 2013, 200 million tourists visited countries that are endemic for hepatitis B virus (HBV). Backpackers are potentially at greater risk of hepatitis B than other travellers yet exposure to HBV remains under researched in this population. METHOD: A cross-sectional survey of backpackers visiting two islands in Thailand was performed during early 2015. Participation in activities with high HBV exposure risk was recorded, alongside rates of vaccination and an evaluation of knowledge and attitudes towards the risk of HBV...
November 23, 2016: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/27885748/protective-efficacy-and-hepatitis-b-virus-clearance-in-mice-enhanced-by-cell-mediated-immunity-with-novel-prime-boost-regimens
#14
X Chuai, P Chen, H Chen, W Wang, Y Deng, L Ruan, W Li, W Tan
In this study, anti-hepatitis B virus (HBV) immunity was evaluated in mice using several regimens of the HBV recombinant protein vaccine HBSS1 that expressed in CHO cells containing S (1-223 aa) and preS1 (21-47 aa) and recombinant adenovirus rAdSS1 vaccine. Further, the protective efficacy of these vaccine regimens was studied in a mouse model. High titres of antigen-specific antibodies and neutralizing activity were elicited in mice after vaccination. However, robust multi-antigen (preS1 and S)-specific cell-mediated immunity (CMI) was only detected in mice primed with HBSS1 and boosted with rAdSS1...
November 25, 2016: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/27874311/long-term-persistence-in-protection-and-response-to-a-hepatitis-b-vaccine-booster-among-adolescents-immunized-in-infancy-in-the-western-region-of-china
#15
Zhen-Zi Wang, Yu-Hua Gao, Wei Lu, Cun-Duo Jin, Ying Zeng, Ling Yan, Feng Ding, Tong Li, Xue-En Liu, Hui Zhuang
OBJECTIVES: To evaluate the persistence of protection from hepatitis B (HB) vaccination among adolescents immunized with a primary series of HB vaccine as infants, and the immune response to booster doses. METHODS: Healthy adolescents aged 15-17 years vaccinated with HB vaccine only at birth were enrolled. Baseline serum hepatitis B surface antigen (HBsAg), antibody against hepatitis B surface antigen (anti-HBs) and antibody against hepatitis B core antigen (anti-HBc) were detected by Enzyme-Linked Immunosorbent Assay (ELISA) and anti-HBs level was measured using Chemiluminescent Microparticle Immunoassay (CMIA)...
November 22, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27866773/influenza-h7n9-lah-hbc-virus-like-particle-vaccine-with-adjuvant-protects-mice-against-homologous-and-heterologous-influenza-viruses
#16
Dan Zheng, Shaoheng Chen, Di Qu, Jianjun Chen, Fuyan Wang, Ran Zhang, Ze Chen
The long alpha-helix (LAH) region located in influenza virus hemagglutinin (HA) shows conservation among different influenza A strains, which could be used as a candidate target of influenza vaccines. Moreover, the hepatitis B virus core protein (HBc) is a carrier for heterologous epitopes in eliciting effective immune responses. We inserted the LAH region of H7N9 influenza virus into the HBc and prepared the LAH-HBc protein, which were capable of self-assembly into virus-like particles (VLP), by using E. coli expression system...
December 12, 2016: Vaccine
https://www.readbyqxmd.com/read/27866767/minimization-of-hepatitis-b-infection-among-children-in-jiangsu-china-12years-after-integration-of-hepatitis-b-vaccine-into-the-expanded-program-on-immunization
#17
Xiaoqian Lin, Jishi Yang, Huixia Lu, Yulin Zhou, Guiping Zhou, Huiyi Wu, Chenyu Xu, Qiaozhen Wu, Jingli Liu, Shanshan Chen, Muyi Yang, Guangyu Gu, Yali Hu, Yi-Hua Zhou
BACKGROUND: China has integrated hepatitis B vaccine into the Expanded Program on Immunization since 2002. We aimed to survey the seroprevalence of and immunity to hepatitis B virus (HBV) in children born from 2002 to 2014 in Jiangsu, China. METHODS: Totally 3442 children (M:F=2072:1370) at the age of 7months to 12years (5.5±3.6), from five cities and rural areas across Jiangsu province, were enrolled. Blood samples were measured for HBV markers by ELISA and quantitative microparticle enzyme immunoassay...
December 12, 2016: Vaccine
https://www.readbyqxmd.com/read/27855500/treatment-of-hepatitis-b-virus-an-update
#18
Haley Ward, Lydia Tang, Bhawna Poonia, Shyam Kottilil
Chronic hepatitis B virus infection is a global health concern as it affects over 240 million people worldwide and an estimated 686,000 people die annually as a result of complications of the disease. With the development of newer antiviral drugs, viral suppression of HBV is achievable, however elimination of HBV from infected individuals (functional cure) remains an issue. Due to persistence of HBV DNA (cccDNA) in infected cells, chronically infected patients who discontinue therapy prior to HBsAg loss or seroconversion are likely to relapse...
December 2016: Future Microbiology
https://www.readbyqxmd.com/read/27847016/low-prevalence-of-hepatitis-b-and-c-among-tuberculosis-patients-in-duhok-province-kurdistan-are-hbsag-and-anti-hcv-prerequisite-screening-parameters-in-tuberculosis-control-program
#19
Muayad A Merza, Safer M Haji, Abid Mohialdeen Hasan Alsharafani, Shivan U Muhammed
OBJECTIVE/BACKGROUND: Viral hepatitis, particularly hepatitis B virus (HBV) and hepatitis C virus (HCV), infections and tuberculosis (TB) are a global public health concern. Co-infection with HBV or HCV among TB patients may potentiate the risk of hepatotoxicity induced by anti-TB drugs. Hence, the aim of this study was to identify the prevalence of HBV and HCV among TB patients included in the Duhok National Tuberculosis Program (NTP). METHODS: The Duhok NTP Center is a specialized institution in Duhok City, Iraq, concerned with management and follow-up of TB patients...
September 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/27846055/a-phase-iii-randomized-double-blind-clinical-trial-of-an-investigational-hexavalent-vaccine-given-at-2-3-4-and-12-months
#20
Timo Vesikari, Thomas Becker, Andre F Vertruyen, Katleen Poschet, Sheryl A Flores, Marco F Pagnoni, Jin Xu, G Frank Liu, Jon E Stek, Florence Boisnard, Stéphane Thomas, Eddy Ziani, Andrew W Lee
BACKGROUND: Combination vaccines simplify vaccination visits and improve coverage and timeliness. DTaP5-HB-IPV-Hib is a new investigational, fully-liquid, combination vaccine containing a 5-antigen pertussis component and which is designed to protect against 6 infectious diseases. METHODS: In this multicenter, double-blind, comparator-controlled, Phase III study (NCT01341639) conducted in Finland, Germany, and Belgium, healthy infants were randomized 1:1 to receive one of two immunization regimens...
November 11, 2016: Pediatric Infectious Disease Journal
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