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https://www.readbyqxmd.com/read/28645862/seroprevalence-and-susceptibility-to-hepatitis-a-in-the-european-union-and-european-economic-area-a-systematic-review
#1
REVIEW
Paloma Carrillo-Santisteve, Lara Tavoschi, Ettore Severi, Sandro Bonfigli, Michael Edelstein, Emma Byström, Pierluigi Lopalco
Most of the European Union (EU) and European Economic Area (EEA) is considered a region of very low hepatitis A virus (HAV) endemicity; however, geographical differences exist. We did a systematic review with the aim of describing seroprevalence and susceptibility in the general population or special groups in the EU and EEA. We searched databases and public health national institutes websites for HAV seroprevalence records published between Jan 1, 1975, and June 30, 2014, with no language restrictions. An updated search was done on Aug 10, 2016...
June 20, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28631170/development-of-a-peptide-elisa-to-discriminate-vaccine-induced-immunity-from-natural-infection-of-hepatitis-a-virus-in-a-phase-iv-study
#2
C Ye, J Luo, X Wang, J Xi, Y Pan, J Chen, X Yang, G Li, Q Sun, J Yang
Hepatitis A virus (HAV) is a highly infectious agent that causes acute liver disease. The infection can trigger the production of antibodies against the structural and non-structural proteins of HAV. Nonetheless, vaccination with an HAV vaccine leads to the production of a primary antibody against the structural proteins. Because the non-structural proteins are only produced during active virus replication, there is no or very little antibody production against the non-structural proteins. However, the current commercial immunoassay cannot distinguish between antibodies produced during natural infection and those from vaccination against HAV...
June 19, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28627822/development-of-a-one-step-reverse-transcription-loop-mediated-isothermal-amplification-system-for-a-highly-sensitive-detection-of-rabbit-hepatitis-e-virus
#3
Jing Wang, Hua Zhang, Shengyuan Yan, Yichao Wang, Xin Lu, Hongwei Fu
BACKGROUND: Hepatitis E virus (HEV) is a major cause of acute viral hepatitis in areas with poor sanitation. Rabbit is one of important animal reservoirs of the virus. Reverse transcription-loop-mediated isothermal amplification (RT-LAMP) system is a novel nucleic acid amplification assay, for which the specificity and sensitivity are much higher than that of conventional PCR. However, previously reported RT-LAMP system cannot detect rabbit HEV, which was identified recently and seems to be another potential source of human HEV infection...
May 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28621437/hepatitis-a-virus-strains-circulating-during-1997-2015-in-campania-a-southern-italy-region-with-periodic-outbreaks
#4
Angela Costantino, Nicola Coppola, Enea Spada, Roberto Bruni, Stefania Taffon, Michele Equestre, Cinzia Marcantonio, Caterina Sagnelli, Chiara Dell'Isola, Grazia Tosone, Silvia Mascolo, Evangelista Sagnelli, Anna Rita Ciccaglione
In Italy the incidence of hepatitis A has progressively declined over the last 30 years, though not homogeneously throughout the country. In Campania, Southern Italy, high annual incidence rates have been reported and several periodic outbreaks have occurred.o investigate the phylogenetic and epidemiologic relationships among HAV strains circulating in Campania over the period 1997-2015, 87 hepatitis A cases were investigated. The most frequent risk factor was the consumption of raw/undercooked shellfish (75/87, 86...
June 16, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28611512/hepatitis-a-virus-infection-and-hepatitis-a-vaccination-in-human-immunodeficiency-virus-positive-patients-a-review
#5
REVIEW
Kuan-Yin Lin, Guan-Jhou Chen, Yu-Lin Lee, Yi-Chia Huang, Aristine Cheng, Hsin-Yun Sun, Sui-Yuan Chang, Chun-Eng Liu, Chien-Ching Hung
Hepatitis A virus (HAV) is one of the most common infectious etiologies of acute hepatitis worldwide. The virus is known to be transmitted fecal-orally, resulting in symptoms ranging from asymptomatic infection to fulminant hepatitis. HAV can also be transmitted through oral-anal sex. Residents from regions of low endemicity for HAV infection often remain susceptible in their adulthood. Therefore, clustered HAV infections or outbreaks of acute hepatitis A among men who have sex with men and injecting drug users have been reported in countries of low endemicity for HAV infection...
May 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28609202/the-financial-burden-of-public-health-responses-to-hepatitis-a-cases-among-food-handlers-2012-2014
#6
Rebecca J Morey, Melissa G Collier, Noele P Nelson
When food handlers become ill with hepatitis A virus (HAV) infection, state and local health departments must assess the risk of HAV transmission through prepared food and recommend or provide postexposure prophylaxis (PEP) for those at risk for HAV infection. Providing PEP (eg, hepatitis A [HepA] vaccine or immunoglobulin), however, is costly. To describe the burden of these responses on state and local health departments, we determined the number of public health responses to HAV infections among food handlers by reviewing public internet sources of media articles...
January 1, 2017: Public Health Reports
https://www.readbyqxmd.com/read/28592090/-a-cross-sectional-study-of-seroepidemiology-of-viral-hepatitis-among-uighurs-in-shufu-of-xinjiang
#7
Z B Zhang, Z X Xue, Q Y Yang, T M Wang, Y H Li, C Y Ma, X L Song, G Wang, D M Luo, Mahat Sulayman, Abdurahman Rayhangul, C H Zhao, Y Z Wang, M Wang
Objective: To explore the status of seroepidemiology on hepatitis A, B and C among students and residents aged equal or greater than 18 years in south Xinjiang, and to provide scientific evidence for prevention and control of viral hepatitis. Methods: Uyghur students in four towns and villages were selected by cluster random sampling from Feb to May, 2015, and Uyghur residents aged 18 to 69 years were selected by stratified cluster sampling from May to September, 2016. 4 507 middle and primary Uygur students and 4 833 Uyghur resides equal or greater than 18 years attended this survey...
June 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28592089/-prevalence-of-hepatitis-a-antibody-among-population-covered-by-different-hepatitis-a-immunization-strategies-in-shandong-province-2015-china
#8
Q Kong, B Y Yan, J J Lyu, Y Feng, J Y Liu, L Z Song, Q Xu, L Zhang, A Q Xu
Objective: To evaluate prevalence of hepatitis A antibody (anti-HAV IgG) among population covered by different hepatitis A vaccine immunization strategies in Shandong Province in 2015. Methods: In October 2015, according to the geographical location of Shandong Province, the stratified random sampling method was used to stratify the 17 municipal distrcts, and the random number table method was used for sampling, First, two eastern cites (Qingdao, Rizhao), two western cities (Liaocheng, Zaozhuang) and three central cities (Jinan, Zibo and Laiwu) were selected; secondly, one county was drawn from each city...
June 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28587404/glucose-regulated-protein-78-is-an-antiviral-against-hepatitis-a-virus-replication
#9
Xia Jiang, Tatsuo Kanda, Yuki Haga, Reina Sasaki, Masato Nakamura, Shuang Wu, Shingo Nakamoto, Hiroshi Shirasawa, Hiroaki Okamoto, Osamu Yokosuka
Infection with hepatitis A virus (HAV) is a major cause of acute hepatitis globally and it is important to identify the mechanisms of HAV replication. Glucose-regulated protein 78 (GRP78) is an endoplasmic reticulum (ER) chaperone and serves a role in unfolded protein response pathways. Previous studies have demonstrated that GRP78 functions as an endogenous antiviral factor. In the present study, two loss-of-function studies using GRP78 were completed to elucidate the role of GRP78 in HAV infection. HAV replication was observed to be enhanced by deficient GRP78 although GRP78-deficiency also led to lower expression of ER stress molecules downstream of GRP78...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28576363/effect-of-green-tea-extract-on-enteric-viruses-and-its-application-as-natural-sanitizer
#10
W Randazzo, I Falcó, R Aznar, G Sánchez
In this work, the effect of green tea extract (GTE) was assessed against murine norovirus (MNV) and hepatitis A virus (HAV) at different temperatures, exposure times and pH conditions. Initially, GTE at 0.5 and 5 mg/ml were individually mixed with each virus at 5 log TCID50/ml and incubated 2 h at 37 °C at different pHs (from 5.5 to 8.5). GTE affected both viruses depending on pH with higher reductions observed in alkaline conditions. Secondly, different concentrations of GTE (0.5 and 5 mg/ml) were mixed with viral suspensions and incubated for 2 or 16 h at 4, 25 and 37 °C at pH 7...
September 2017: Food Microbiology
https://www.readbyqxmd.com/read/28558073/hepatitis-e-virus-persists-in-the-presence-of-a-type-iii-interferon-response
#11
Xin Yin, Xinlei Li, Charuta Ambardekar, Zhimin Hu, Sébastien Lhomme, Zongdi Feng
The RIG-I-like RNA helicase (RLR)-mediated interferon (IFN) response plays a pivotal role in the hepatic antiviral immunity. The hepatitis A virus (HAV) and the hepatitis C virus (HCV) counter this response by encoding a viral protease that cleaves the mitochondria antiviral signaling protein (MAVS), a common signaling adaptor for RLRs. However, a third hepatotropic RNA virus, the hepatitis E virus (HEV), does not appear to encode a functional protease yet persists in infected cells. We investigated HEV-induced IFN responses in human hepatoma cells and primary human hepatocytes...
May 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28534888/hepatitis-a-outbreaks-in-european-homosexual-men
#12
Pablo Barreiro, Vicente Soriano
Hepatitis A virus (HAV) is a small RNA, non-enveloped agent predominantly transmitted via the fecal/oral route through person-to-person contact or contaminated food and water. The mean incubation period is 28 days (range: 15-50). Acute hepatitis A is always self-limited and very rarely fatal. Moreover, it never progresses to chronicity. Acutely infected persons are most likely to transmit HAV before the onset of jaundice, when viral particle concentration in stool is highest.
May 23, 2017: AIDS Reviews
https://www.readbyqxmd.com/read/28501618/assessing-activity-of-hepatitis-a-virus-3c-protease-using-a-cyclized-luciferase-based-biosensor
#13
Junwei Zhou, Dang Wang, Yongqiang Xi, Xinyu Zhu, Yuting Yang, Mengting Lv, Chuanzhen Luo, Jiyao Chen, Xu Ye, Liurong Fang, Shaobo Xiao
Hepatitis A is an acute infection caused by Hepatitis A virus (HAV), which is widely distributed throughout the world. The HAV 3C cysteine protease (3C(pro)), an important nonstructural protein, is responsible for most cleavage within the viral polyprotein and is critical for the processes of viral replication. Our group has previously demonstrated that HAV 3C(pro) cleaves human NF-κB essential modulator (NEMO), a kinase required in interferon signaling. Based on this finding, we generated four luciferase-based biosensors containing the NEMO sequence (PVLKAQ↓ADIYKA) that is cleaved by HAV 3C(pro) and/or the Nostoc punctiforme DnaE intein, to monitor the activity of HAV 3C(pro) in human embryonic kidney cells (HEK-293T)...
May 10, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28498301/seroprevalence-of-hepatitis-a-12-years-following-the-implementation-of-toddlers-vaccination-a-population-based-study-in-israel
#14
Ravit Bassal, Merav Weil, Daniel Cohen, Danit Sofer, Ella Mendelson, Tamy Shohat
BACKGROUND: In 1999, Israel became the first country to introduce an inactivated hepatitis A vaccine into its national childhood vaccination program. The objective of the present study was to evaluate the seroprevalence of hepatitis A virus (HAV) antibodies in the Israeli population before and after the introduction of the program. METHODS: A cross-sectional serosurvey using the National Serum Bank was conducted on 1,883 and 2,027 serum samples collected before and after introduction of the vaccine, respectively...
May 11, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28492419/seroprevalence-of-antibodies-and-antigens-against-hepatitis-a-e-viruses-in-refugees-and-asylum-seekers-in-germany-in-2015
#15
Alexandra Jablonka, Philipp Solbach, Michael Wöbse, Michael P Manns, Reinhold E Schmidt, Heiner Wedemeyer, Markus Cornberg, Georg M N Behrens, Svenja Hardtke
BACKGROUND: Migration because of miscellaneous political crises in countries in the Middle East and Africa is a global challenge for whole Europe from an economic, social, and public health view. There is an urgent need to generate comprehensive, evidence-based data to expedite further screening and vaccination strategies. METHODS: A total of 604 individuals ranging in age from 2 to 68 years who enrolled at a single reception center were tested for the prevalence of serologic markers for hepatitis virus types A, B, C, D, and E (HAV, HBV, HCV, HDV, HEV), respectively...
May 10, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28490661/surgery-for-subacromial-impingement-syndrome-in-relation-to-occupational-exposures-lifestyle-factors-and-diabetes-mellitus-a-nationwide-nested-case-control-study
#16
Annett Dalbøge, Poul Frost, Johan Hviid Andersen, Susanne Wulff Svendsen
OBJECTIVES: To estimate the risk of surgery for subacromial impingement syndrome (SIS) in relation to occupational exposures, lifestyle factors and diabetes mellitus. METHODS: We conducted a case-control study nested in a register-based cohort study of the Danish working population. For each of 3000 first-time cases of surgery for SIS, two age-matched and sex-matched controls were drawn. Cases and controls received a questionnaire on job history and other factors...
May 10, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28490497/protein-composition-of-the-hepatitis-a-virus-quasi-envelope
#17
Kevin L McKnight, Ling Xie, Olga González-López, Efraín E Rivera-Serrano, Xian Chen, Stanley M Lemon
The Picornaviridae are a diverse family of RNA viruses including many pathogens of medical and veterinary importance. Classically considered "nonenveloped," recent studies show that some picornaviruses, notably hepatitis A virus (HAV; genus Hepatovirus) and some members of the Enterovirus genus, are released from cells nonlytically in membranous vesicles. To better understand the biogenesis of quasi-enveloped HAV (eHAV) virions, we conducted a quantitative proteomics analysis of eHAV purified from cell-culture supernatant fluids by isopycnic ultracentrifugation...
June 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28482131/incidence-of-acute-hepatitis-a-among-hiv-positive-patients-during-an-outbreak-among-msm-in-taiwan-impact-of-hav-vaccination
#18
Guan-Jhou Chen, Kuan-Yin Lin, Hsin-Yun Sun, Wang-Huei Sheng, Szu-Min Hsieh, Yi-Chia Huang, Aristine Cheng, Wen-Chun Liu, Chien-Ching Hung, Shan-Chwen Chang
BACKGROUND: An unprecedented outbreak of acute hepatitis A has occurred among MSM in Taiwan since June 2015. We aimed to describe the seroepidemiology of HAV infection and to investigate the relationship between HAV vaccination and the incidence of acute hepatitis A among HIV-positive patients at the largest designated hospital for HIV care during the outbreak. METHODS: Between 2012 and 2016, the HAV serostatus, vaccination history, and clinical characteristics of HIV-positive patients were retrospectively reviewed...
May 8, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28481680/modeling-the-hepatitis-a-epidemiological-transition-in-brazil-and-mexico
#19
Thierry Van Effelterre, Adrienne Guignard, Cinzia Marano, Rosalba Rojas, Kathryn H Jacobsen
BACKGROUND: Many low- to middle-income countries have completed or are in the process of transitioning from high or intermediate to low endemicity for hepatitis A virus (HAV). Because the risk of severe hepatitis A disease increases with age at infection, decreased incidence that leaves older children and adults susceptible to HAV infection may actually increase the population-level burden of disease from HAV. Mathematical models can be helpful for projecting future epidemiological profiles for HAV...
May 8, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28452010/occurrence-and-trend-of-hepatitis-a-virus-in-bivalve-molluscs-production-areas-following-a-contamination-event
#20
Elisabetta Suffredini, Yolande Thérèse Rose Proroga, Simona Di Pasquale, Orlandina Di Maro, Maria Losardo, Loredana Cozzi, Federico Capuano, Dario De Medici
The aim of this study was to assess the trend of hepatitis A virus (HAV) in a coastal zone impacted by a contamination event, providing data for the development of management strategies. A total of 352 samples, including four bivalve mollusc species (Mytilus galloprovincialis, Solen vagina, Venus gallina and Donax trunculus), were taken over a period of 6 months from 27 production areas of the coast and analysis were performed according to ISO/TS 15216-1:2013. HAV presence was detected in 77 samples from 11 production areas and all positive results were related to samples collected in the first 3 months of the surveillance, during which HAV prevalence was 39...
April 27, 2017: Food and Environmental Virology
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