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https://www.readbyqxmd.com/read/28208132/an-outbreak-of-acute-hepatitis-caused-by-genotype-ib-hepatitis-a-viruses-contaminating-the-water-supply-in-thailand
#1
Kriangsak Ruchusatsawat, Jongkonnee Wongpiyabovorn, Chonthicha Kawidam, Laddawan Thiemsing, Somchai Sangkitporn, Sayaka Yoshizaki, Masashi Tatsumi, Naokazu Takeda, Koji Ishii
BACKGROUND: In 2000, an outbreak of acute hepatitis A was reported in a province adjacent to Bangkok, Thailand. AIMS: To investigate the cause of the 2000 hepatitis A outbreaks in Thailand using molecular epidemiological analysis. METHODS: Serum and stool specimens were collected from patients who were clinically diagnosed with acute viral hepatitis. Water samples from drinking water and deep-drilled wells were also collected. These specimens were subjected to polymerase chain reaction (PCR) amplification and sequencing of the VP1/2A region of the hepatitis A virus (HAV) genome...
February 17, 2017: Intervirology
https://www.readbyqxmd.com/read/28202798/high-prevalence-and-diversity-of-hepatitis-viruses-in-suspected-cases-of-yellow-fever-in-the-democratic-republic-of-congo
#2
Sheila Makiala-Mandanda, Frédéric Le Gal, Nadine Ngwaka-Matsung, Steve Ahuka-Mundeke, Richard Onanga, Berthold Bivigou-Mboumba, Elisabeth Pukuta-Simbu, Athenaïs Gerber, Jessica L Abbate, Dieudonné Mwamba, Nicolas Berthet, Eric Maurice Leroy, Jean-Jacques Muyembe-Tamfum, Pierre Becquart
The majority of patients with acute febrile jaundice (>95%) identified through a yellow fever surveillance program in the Democratic Republic of Congo (DRC) test negative for antibodies against yellow fever virus. However, no etiological investigation has ever been carried out on these patients. Here, we tested for hepatitis A (HAV), B (HBV), C (HCV), D (HDV) and E (HEV) viruses, all of which can cause acute febrile jaundice, in patients included in the yellow fever surveillance program in the DRC. On a total of 498 serum samples collected from suspected cases of yellow fever from January 2003 to January 2012, ELISA techniques were used to screen for antibodies against HAV (IgM) and HEV (IgM) and for antigens and antibodies against HBV (HBsAg and anti-HBc IgM), HCV and HDV...
February 15, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28190741/immunogenicity-and-estimation-of-antibody-persistence-following-vaccination-with-an-inactivated-virosomal-hepatitis-a-vaccine-in-adults-a-20-year-follow-up-study
#3
Francois Chappuis, Tiziana Farinelli, Henri Deckx, Michal Sarnecki, Oscar Go, Yvonne Salzgeber, Coby Stals
PURPOSE: This was a 20-year follow-up study to assess long-term persistence of protective antibody levels against the hepatitis A virus (HAV) in healthy participants vaccinated with 2 doses of inactivated hepatitis A vaccine (Epaxal®) between 1992 and 1995. METHODS: Blood samples for anti-HAV antibody concentrations were obtained during a follow-up visit 20years after vaccination and were analyzed in parallel with samples still available from previous visits using AxSYM® HAVAB 2...
February 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28185736/enteric-viruses-and-adenovirus-diversity-in-waters-from-2016-olympic-venues
#4
Rodrigo Staggemeier, Tatiana M S Heck, Meriane Demoliner, Rute G F Ritzel, Nicole M S Röhnelt, Viviane Girardi, Carolina A Venker, Fernando R Spilki
Rio de Janeiro's inner and coastal waters are heavily impacted by human sewage pollution for decades. Enteric viruses, including human adenoviruses (HAdV), human enterovirus (EV), group A rotavirus (RV) and hepatitis A virus (HAV) are more likely to be found in contaminated surface waters. The present work aimed to assess the frequency and loads of EV, HAdV-C and -F species, RV and HAV in sand and water samples from venues used during the 2016 Summer Olympics and by tourists attending the event. Sixteen monthly collections were carried out from March 2015 to July 2016 in 12 different sites from Rio de Janeiro, Brazil...
February 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28182859/radiographic-study-of-pes-planovarus
#5
Janic Aebi, Monika Horisberger, Arno Frigg
BACKGROUND: Depending on the direction of the subtalar joint, a foot deformity generally tends towards pronation (pes planovalgus) or supination (pes cavovarus). However, the combination of hindfoot varus and flat midfoot/forefoot (pes planovarus) is an exception to this rule. Pes planovarus has so far only been referred to in connection with Müller-Weiss disease and congenital disease. We diagnosed pes planovarus in otherwise healthy patients without these diseases. METHODS: Forty patients with 54 symptomatic feet who were treated between August 2012 and July 2016 were included (mean age, 44...
February 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28162965/socioeconomic-indicators-are-strong-predictors-of-hepatitis-a-seroprevalence-rates-in-the-middle-east-and-north-africa
#6
Mehmet Koroglu, Kathryn H Jacobsen, Tayfur Demiray, Ahmet Ozbek, Unal Erkorkmaz, Mustafa Altindis
The goal of this analysis was to examine the association between age-specific hepatitis A virus (HAV) seroprevalence rates and various socioeconomic indicators within the Middle East and North Africa (MENA) region. We conducted a systematic review of all recently published studies on HAV conducted in the MENA region and identified the highest quality studies for inclusion in our analysis. We calculated the age at midpoint of population immunity (AMPI) for each study and estimated seroprevalence rates at the ages of 5, 10, and 15 years...
February 2, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28134747/cytokine-signatures-discriminate-highly-frequent-acute-hepatitis-a-virus-and-hepatitis-e-virus-co-infections-from-mono-infections-in-mexican-pediatric-patients
#7
Mauricio Realpe-Quintero, Edgar Daniel Copado-Villagrana, Jorge Luis Trujillo-Ochoa, Angel Hilario Alvarez, Arturo Panduro, Nora Alma Fierro
The frequency of HAV and HEV infections and their cytokine profiles were analyzed in Mexican pediatric patients with acute hepatitis. A high frequency of co-infections was found. Significant overexpression of IL-4, IL-12, IL-13 and IFN-gamma during HAV mono-infections and limited secretion of cytokines in HEV infections were observed.
January 26, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28128473/obesity-and-radiological-severity-are-associated-with-viscosupplementation-failure-in-patients-with-knee-osteoarthritis
#8
Florent Eymard, Xavier Chevalier, Thierry Conrozier
Viscosupplementation (VS) is still controversial. One of the key points is the lack of well-identified factors of response. We aimed to identify clinical and radiological factors associated with lack of relevant response after intra-articular (IA) hyaluronic acid (HA) injections in symptomatic knee osteoarthritis patients. A post hoc analysis of the HAV-2012 trial, a controlled, multicentre, double-blind, randomized, non-inferiority trial comparing 3 weekly IA injections of HA (HAnox-M or BioHA) for symptomatic tibiofemoral OA was performed...
January 27, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28106751/synthesis-of-some-new-pyridazine-derivatives-for-anti-hav-evaluation
#9
Eman M Flefel, Waled A Tantawy, Walaa I El-Sofany, Mahmoud El-Shahat, Ahmed A El-Sayed, Dina N Abd-Elshafy
4-(2-(4-Halophenyl)hydrazinyl)-6-phenylpyridazin-3(2H)-ones 1a,b were prepared and treated with phosphorus oxychloride, phosphorus pentasulphide and ethyl chloroformate to give the corresponding chloropyridazine, pyridazinethione, oxazolopyridazine derivatives 2-4, respectively. Compound 2 reacted with hydrazine hydrate to afford hydrazinylpyridazine 7. The reaction of 4-(2-(4-chlorophenyl)hydrazinyl)-3-hydrazinyl-6-phenylpyridazine (7) with acetic anhydride, p-chlorobenzaldehyde and carbon disulphide gave the corresponding pyridazinotriazine derivatives 8-10...
January 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28099530/nationwide-seropositivity-of-hepatitis-a-in-republic-of-korea-from-2005-to-2014-before-and-after-the-outbreak-peak-in-2009
#10
Kyung-Ah Kim, Anna Lee, Moran Ki, Sook-Hyang Jeong
BACKGROUND/AIMS: The epidemiologic shift of hepatitis A virus (HAV) infection in the South Korean population resulted in a peak outbreak of hepatitis in 2009. The aim of this study was to clarify the seropositivity of anti-HAV antibody (anti-HAV) and its demographic characteristics before and after the peak outbreak from 2005 to 2014. METHODS: This retrospective study analyzed the anti-HAV data of all individuals from 1,795 medical institutions referred to a major central laboratory from January 2005 through December 2014, as a sentineal tool for monitoring annual variation of anti-HAV positivity...
2017: PloS One
https://www.readbyqxmd.com/read/28092416/persistence-of-antibody-to-hepatitis-a-virus-20-years-after-receipt-of-hepatitis-a-vaccine-in-alaska
#11
Ian D Plumb, Lisa R Bulkow, Michael G Bruce, Thomas W Hennessy, Julie Morris, Karen Rudolph, Philip Spradling, Mary Snowball, Brian J McMahon
Hepatitis A vaccine is recommended for children ≥1 year old to prevent hepatitis A virus (HAV) infection. However the duration of vaccine-induced immunity is unknown. We evaluated a cohort of Alaska Native persons 20 years after HAV vaccination. Children aged 3-6 years had been previously randomized to receive 3 doses of HAV vaccine (360 ELISA units/dose) at: A) 0,1,2 months; B) 0,1,6 months; and C) 0,1,12 months. We measured anti-HAV antibody concentrations every 2-3 years; described geometric mean concentrations (GMC) and the proportion with protective antibody (≥20 mIU mL-1) over time; and modelled change in GMC using fractional polynomial regression...
January 16, 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/28089593/physician-knowledge-and-attitudes-about-hepatitis-a-and-current-practices-regarding-hepatitis-a-vaccination-delivery
#12
Noele P Nelson, Mandy Allison, Megan C Lindley, Michaela Brtnikova, Lori A Crane, Brenda L Beaty, Laura P Hurley, Allison Kempe
OBJECTIVES: To assess physicians' 1) knowledge and attitudes about hepatitis A disease and HepA vaccine, and 2) child care and school HepA vaccine mandates; 3) practices related to HepA vaccine delivery; 4) factors associated with strongly recommending HepA vaccine to all 1-2 year olds; and 5) feasibility of implementing HepA catch-up vaccination at health maintenance visits. METHODS: A national survey was conducted among representative networks of pediatricians and family medicine physicians (FMs) from March to June, 2014 by e-mail or mail based on provider preference...
January 9, 2017: Academic Pediatrics
https://www.readbyqxmd.com/read/28074040/potent-neutralization-of-hepatitis-a-virus-reveals-a-receptor-mimic-mechanism-and-the-receptor-recognition-site
#13
Xiangxi Wang, Ling Zhu, Minghao Dang, Zhongyu Hu, Qiang Gao, Shuai Yuan, Yao Sun, Bo Zhang, Jingshan Ren, Abhay Kotecha, Thomas S Walter, Junzhi Wang, Elizabeth E Fry, David I Stuart, Zihe Rao
Hepatitis A virus (HAV) infects ∼1.4 million people annually and, although there is a vaccine, there are no licensed therapeutic drugs. HAV is unusually stable (making disinfection problematic) and little is known of how it enters cells and releases its RNA. Here we report a potent HAV-specific monoclonal antibody, R10, which neutralizes HAV infection by blocking attachment to the host cell. High-resolution cryo-EM structures of HAV full and empty particles and of the complex of HAV with R10 Fab reveal the atomic details of antibody binding and point to a receptor recognition site at the pentamer interface...
January 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28070204/evaluation-of-lactobacillus-coryniformis-cect5711-strain-as-a-coadjuvant-in-a-vaccination-process-a-randomised-clinical-trial-in-healthy-adults
#14
Noemí Redondo, Esther Nova, Alina Gheorghe, Ligia Esperanza Díaz, Aurora Hernández, Ascensión Marcos
BACKGROUND: Although the effects of probiotics on the immune system have been extensively evaluated under disease states, their role in healthy situations remains unclear, since changes are hardly expected under immunological homeostasis. EFSA indicates that vaccination protocols could be used to evaluate the potential role of probiotics to improve the immune response against antigen challenges. The aim of the study was to evaluate the effect of Lactobacillus coryniformis CECT5711 (Lc) on the specific immunity of healthy volunteers undergoing vaccination with Hepatitis A virus (HAV)...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28060048/a-randomized-controlled-trial-to-evaluate-a-potential-hepatitis-b-booster-vaccination-strategy-using-combined-hepatitis-a-and-b-vaccine
#15
Fangjun Li, Yuansheng Hu, Youming Zhou, Lixin Chen, Wei Xia, Yufei Song, Zhengliang Tan, Lidong Gao, Zhong Yang, Gang Zeng, Xing Han
BACKGROUND: Booster doses could play a major role in those no responders or low responders to primary hepatitis B vaccine. Planed time point for hepatitis A vaccination in China provides a good opportunity to carry out hepatitis B booster dose by using combined hepatitis A and B vaccine. METHOD: A randomized, double blinded clinical trial was conducted to compare the immunogenicity and safety of toddlers 18-24 months of age receiving three different vaccination regimens: either two doses of inactivated hepatitis A vaccine (group 1), or one dose inactivated hepatitis A vaccine plus one dose combined hepatitis A and B vaccine (group 2), or two doses of combined hepatitis A and B vaccine (group 3) respectively...
January 3, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28030926/prevalence-of-rotavirus-adenovirus-hepatitis-a-virus-and-enterovirus-in-water-samples-collected-from-different-region-of-peshawar-pakistan
#16
Tahir Ahmad, Najma Arshad, Fazal Adnan, Najam-Us-Sahar Sadaf Zaidi, Muhammad Talha Shahid, Usman Zahoor, Muhammad S Afzal, Sadia Anjum
Viral gastroenteritis and other water-borne diseases are the most neglected areas of research in Pakistan. To determine the quality of water, 4 enteric viruses were studied from different localities of Peshawar, Pakistan. The study validates the viral detection method for Rotavirus (RV), Human adenovirus (HAdV), Enterovirus (EV) and Hepatitis A virus (HAV), directly from water sources of rural areas of Peshawar, KPK, Pakistan. Overall, 95 five water samples were tested; among them, 9.47% were positive for RV, 38...
23, 2016: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28026900/doppler-ultrasound-in-liver-cirrhosis-correlation-of-hepatic-artery-and-portal-vein-measurements-with-model-for-end-stage-liver-disease-score
#17
Hee Sun Park, Terry S Desser, R Brooke Jeffrey, Aya Kamaya
OBJECTIVES: To determine whether hepatic arterial and portal venous Doppler ultrasound measurements of the liver in cirrhotic patients correlate with patients' Model for End-Stage Liver Disease (MELD) scores, splenomegaly, or ascites. MATERIALS AND METHODS: Sonographic images and reports were reviewed of 264 patients with hepatic cirrhosis who underwent abdominal ultrasound with Doppler in this internal review board-approved retrospective study. MELD scores were recorded at the time of ultrasound...
December 27, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28013247/evidence-for-hepatitis-a-virus-endemic-circulation-in-israel-despite-universal-toddlers-vaccination-since-1999-and-low-clinical-incidence-in-all-age-groups
#18
Yosef Manor, Matthew Lewis, Daniela Ram, Nili Daudi, Orna Mor, Michal Savion, Zipi Kra-Oz, Yonat Shemer Avni, Rivka Sheffer, Daniel Shouval, Ella Mendelson
BACKGROUND: Universal toddlers vaccination (UTV) introduced in 1999, reduced hepatitis A incidence in Israel from 50.4 to <1.0/100,000. The current Hepatitis A virus (HAV) molecular epidemiology in Israel was studied 13-14y post UTV introduction.. METHODS: An outbreak in Tel-Aviv with 75 cases in 2012-2013 was investigated. Real-time RT-PCR and sequencing of the VP1-2A region (1100bp) was done on: a. serum samples from patients with acute Hepatitis A (12/ 75 in Tel-Aviv and 31 patients hospitalized in 3 other major cities in 2011-2013); b...
December 23, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28011965/are-municipal-solid-waste-collectors-at-increased-risk-of-hepatitis-a-virus-infection-a-greek-cross-sectional-study
#19
George Rachiotis, Eva Tsovili, Dimitrios Papagiannis, Adelais Markaki, Christos Hadjichristodoulou
Municipal solid waste collectors are reportedly at risk for Hepatitis A virus infection (HAV) as an occupational hazard. We aimed to investigate the prevalence and possible risk factors of HAV infection among solid waste collectors in a municipality of the broader region of Attica, Greece. A cross-sectional sero-prevalence study was conducted. Fifty (n=50) waste collectors participated in the study (response rate: 95%). The group of municipal waste collectors was compared to a convenient sample of workers not exposed to solid waste (n=83)...
1, 2016: Le Infezioni in Medicina
https://www.readbyqxmd.com/read/28011355/elimination-of-representative-contaminant-candidate-list-viruses-coxsackievirus-echovirus-hepatitis-a-virus-and-norovirus-from-water-by-coagulation-processes
#20
N Shirasaki, T Matsushita, Y Matsui, K Murai, A Aochi
We examined the removal of representative contaminant candidate list (CCL) viruses (coxsackievirus [CV] B5, echovirus type [EV] 11, and hepatitis A virus [HAV] IB), recombinant norovirus virus-like particles (rNV-VLPs), and murine norovirus (MNV) type 1 by coagulation. Water samples were subjected to coagulation with polyaluminum chloride (PACl, basicity 1.5) followed by either settling or settling and filtration. Together with our previously published results, the removal ratio order, as evaluated by a plaque-forming-unit method or an enzyme-linked immunosorbent assay after settling, was HAV>EV=rNV-VLPs≥CV=poliovirus type 1=MNV>adenovirus type 40 (range, 0...
December 8, 2016: Journal of Hazardous Materials
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