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Japanese encephalitis vaccine

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https://www.readbyqxmd.com/read/28088249/interactions-of-human-microglia-cells-with-japanese-encephalitis-virus
#1
Nils Lannes, Viviane Neuhaus, Brigitte Scolari, Solange Kharoubi-Hess, Michael Walch, Artur Summerfield, Luis Filgueira
BACKGROUND: Japanese encephalitis virus (JEV) is a neurotropic flavivirus causing mortality and morbidity in humans. Severe Japanese encephalitis cases display strong inflammatory responses in the central nervous system and an accumulation of viral particles in specific brain regions. Microglia cells are the unique brain-resident immune cell population with potent migratory functions and have been proposed to act as a viral reservoir for JEV. Animal models suggest that the targeting of microglia by JEV is partially responsible for inflammatory reactions in the brain...
January 14, 2017: Virology Journal
https://www.readbyqxmd.com/read/28077444/protein-interactions-during-the-flavivirus-and-hepacivirus-life-cycle
#2
Gisa Gerold, Janina Bruening, Bettina Weigel, Thomas Pietschmann
Protein-protein interactions govern biological functions in cells, in the extracellular milieu and at the border between cells and extracellular space. Viruses are small intracellular parasites and thus rely on protein interactions to produce progeny inside host cells and to spread from cell to cell. Usage of host proteins by viruses can have severe consequences e.g. apoptosis, metabolic disequilibria or altered cell proliferation and mobility. Understanding protein interactions during virus infection can thus educate us on viral infection and pathogenesis mechanisms...
January 11, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28072958/-investigation-on-immunization-program-coverage-rate-and-its-safety-in-children-with-tuberous-sclerosis
#3
Y Gao, L P Zou, M N Zhang, L Y Pang, Y Y Wang, S F Ma, L L Huang
Objective: To investigate the status of immunization of National Immunization Program (NIP) and its adverse reaction rate in children with tuberous sclerosis. Method: Questionnaire survey was adopted to identify the vaccination coverage and its adverse events; 72 cases of children with tuberous sclerosis and 78 normal controls (healthy children completing age-appropriate NIP) admitted to Chinese People's Liberation Army General Hospital from December 2014 to November 2015 were involved into this study. Result: The age-appropriate NIP coverage rate of tuberous sclerosis was 36%(26/72)...
January 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28030526/long-term-immunogenicity-of-a-single-dose-of-japanese-encephalitis-chimeric-virus-vaccine-in-toddlers-and-booster-response-5-years-after-primary-immunization
#4
Pope Kosalaraksa, Veerachai Watanaveeradej, Chitsanu Pancharoen, Maria Rosario Capeding, Emmanuel Feroldi, Alain Bouckenooghe
BACKGROUND: Japanese encephalitis (JE) is an important mosquito-borne viral disease that is endemic in Asia, Western Pacific countries, and Northern Australia. Although there is no antiviral treatment, vaccination is effective in preventing this disease. METHODS: We followed a cohort of 596 children for 5 years after primary vaccination at 12-18 months of age with JE chimeric virus vaccine (JE-CV; IMOJEV) in a multicenter, phase III trial in Thailand and the Philippines to assess antibody persistence and safety...
December 27, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28006649/serodiagnosis-of-zika-virus-zikv-infections-by-a-novel-ns1-based-elisa-devoid-of-cross-reactivity-with-dengue-virus-antibodies-a-multicohort-study-of-assay-performance-2015-to-2016
#5
Katja Steinhagen, Christian Probst, Christiane Radzimski, Jonas Schmidt-Chanasit, Petra Emmerich, Marjan van Esbroeck, Janke Schinkel, Martin P Grobusch, Abraham Goorhuis, Jens M Warnecke, Erik Lattwein, Lars Komorowski, Andrea Deerberg, Sandra Saschenbrecker, Winfried Stöcker, Wolfgang Schlumberger
Serological diagnosis of Zika virus (ZIKV) infections is challenging due to high cross-reactivity between flaviviruses. We evaluated the diagnostic performance of a novel anti-ZIKV ELISA based on recombinant ZIKV non-structural protein 1 (NS1). Assay sensitivity was examined using sera from 27 patients with reverse transcription (RT)-PCR-confirmed and 85 with suspected ZIKV infection. Specificity was analysed using sera from 1,015 healthy individuals. Samples from 252 patients with dengue virus (n = 93), West Nile virus (n = 34), Japanese encephalitis virus (n = 25), chikungunya virus (n = 19) or Plasmodium spp...
December 15, 2016: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28004418/sublingual-immunization-with-japanese-encephalitis-virus-vaccines-induces-effective-immunity-through-both-cellular-and-humoral-immune-responses-in-mice
#6
Eun-Young Lee, Joo-Young Kim, Deuk-Ki Lee, Il-Sub Yoon, Hae Li Ko, Ji-Woo Chung, Jun Chang, Jae-Hwan Nam
The Japanese encephalitis virus (JEV) is the leading cause of viral encephalitis. Although there are four classes of vaccines against JEV, the immunization routes for all vaccines are subcutaneous or intramuscular injection. In here, we investigated the effectiveness of sublingual administration of the JEV live-attenuated vaccine or the recombinant modified vaccinia virus Ankara (MVA) vaccine including JEV prM/E. The mice were immunized three times intramuscularly (i.m.) or sublingually (s.l.). One week after the final immunization by both s...
December 22, 2016: Microbiology and Immunology
https://www.readbyqxmd.com/read/27960239/histopathology-of-vaccine-preventable-diseases
#7
REVIEW
Isaac H Solomon, Danny A Milner
The widespread use of vaccines has been one of the most important medical advances in the last century, saving trillions of dollars and millions of lives. Despite local eradication of some infections, travellers returning from affected areas may cause outbreaks through reintroduction of pathogens to individuals who are unable to receive vaccines for medical reasons or who have declined vaccination for non-medical reasons. Infections that would otherwise be uncommonly encountered by anatomical pathologists should therefore remain in the differential diagnosis for immunocompromised and unvaccinated patients...
January 2017: Histopathology
https://www.readbyqxmd.com/read/27926937/intensive-circulation-of-japanese-encephalitis-virus-in-peri-urban-sentinel-pigs-near-phnom-penh-cambodia
#8
Julien Cappelle, Veasna Duong, Long Pring, Lida Kong, Maud Yakovleff, Didot Budi Prasetyo, Borin Peng, Rithy Choeung, Raphaël Duboz, Sivuth Ong, San Sorn, Philippe Dussart, Arnaud Tarantola, Philippe Buchy, Véronique Chevalier
Despite the increased use of vaccination in several Asian countries, Japanese Encephalitis (JE) remains the most important cause of viral encephalitis in Asia in humans with an estimated 68,000 cases annually. Considered a rural disease occurring mainly in paddy-field dominated landscapes where pigs are amplifying hosts, JE may nevertheless circulate in a wider range of environment given the diversity of its potential hosts and vectors. The main objective of this study was to assess the intensity of JE transmission to pigs in a peri-urban environment in the outskirt of Phnom Penh, Cambodia...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27903416/post-licensure-phase-iv-safety-study-of-a-live-attenuated-japanese-encephalitis-recombinant-vaccine-in-children-in-thailand
#9
Tawee Chotpitayasunondh, Pornpimol Pruekprasert, Thanyawee Puthanakit, Chitsanu Pancharoen, Auchara Tangsathapornpong, Peninnah Oberdorfer, Pope Kosalaraksa, Olarn Prommalikit, Suwimon Tangkittithaworn, Phirangkul Kerdpanich, Chonnamet Techasaensiri, Joanna Korejwo, Sunate Chuenkitmongkol, Guy Houillon
BACKGROUND: Japanese encephalitis is a mosquito-borne viral disease endemic in most countries in Asia. A recombinant live, attenuated Japanese encephalitis virus vaccine, JE-CV, is licensed in 14 countries, including Thailand, for the prevention of Japanese encephalitis in adults and children. METHODS: This was a prospective, phase IV, open-label, multicentre, safety study of JE-CV conducted from November 2013 to April 2015, to evaluate rare serious adverse events (AEs)...
January 5, 2017: Vaccine
https://www.readbyqxmd.com/read/27846060/immunogenicity-of-a-live-attenuated-chimeric-japanese-encephalitis-vaccine-as-a-booster-dose-after-primary-vaccination-with-live-attenuated-sa14-14-2-vaccine-a-phase-iv-study-in-thai-children
#10
Sirintip Sricharoenchai, Keswadee Lapphra, Sunate Chuenkitmongkol, Wanatpreeya Phongsamart, Alain Bouckenooghe, Orasri Wittawatmongkol, Supattra Rungmaitree, Kulkanya Chokephaibulkit
This single-group study investigated the immunogenicity and safety of a booster dose of the recently licensed live attenuated chimeric Japanese encephalitis vaccine in 50 healthy children (1-5 years old) who were primed with the live attenuated SA14-14-2 vaccine. A strong anamnestic response was induced 28 days post-booster: GMT, 9,144 (95% CI 7,365-11,353); and seroprotection rate, 49/49 (100%) children.
November 11, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27821699/epidemiological-features-of-japanese-encephalitis-in-taiwan-from-2000-to-2014
#11
Yu-Kang Chang, Hsiao-Ling Chang, Ho-Sheng Wu, Kow-Tong Chen
The incidence of Japanese encephalitis (JE) decreased sharply after the national vaccination program was implemented in Taiwan in 1968. However, cases of JE still occur. The purpose of this study was to assess the epidemiology and vaccination policy for JE in Taiwan. We analyzed the data on JE cases reported to the Taiwan Centers for Disease Control (Taiwan CDC) between 2000 and 2014. During the 15-year study period, a total of 4,474 cases were reported to the Taiwan CDC. Of these, 379 (8.5%) were classified as confirmed cases, and 4,095 (91...
November 7, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27815383/persistence-of-wild-type-japanese-encephalitis-virus-strains-cross-neutralization-five-years-following-je-cv-immunization
#12
Emmanuel Feroldi, Mark Boaz, Sutee Yoksan, Kulkanya Chokephaibulkit, Usa Thisyakorn, Chitsanu Pancharoen, Céline Monfredo, Alain Bouckenooghe
BACKGROUND:  The live-attenuated Japanese encephalitis (JE) vaccine (JE-CV; IMOJEV(®)) induces a protective response in children. A shift in circulating JE virus strains suggests that a genotype shift phenomenon may occur throughout South-East Asia. We assessed the neutralization of wild-type (WT) JE virus isolates at distal time points post-vaccination. METHODS:  We analysed serum samples from a subset of 47 children who had received a JE-CV booster after an inactivated JE vaccine primary immunization...
November 3, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27799502/refusal-of-recommended-travel-related-vaccines-among-u-s-international-travellers-in-global-travepinet
#13
Sara M Lammert, Sowmya R Rao, Emily S Jentes, Jessica K Fairley, Stefanie Erskine, Allison T Walker, Stefan H Hagmann, Mark J Sotir, Edward T Ryan, Regina C LaRocque
BACKGROUND: International travellers are at risk of travel-related, vaccine-preventable diseases. More data are needed on the proportion of travellers who refuse vaccines during a pre-travel health consultation and their reasons for refusing vaccines. METHODS: We analyzed data on travellers seen for a pre-travel health consultation from July 2012 through June 2014 in the Global TravEpiNet (GTEN) consortium. Providers were required to indicate one of three reasons for a traveller refusing a recommended vaccine: (1) cost concerns, (2) safety concerns or (3) not concerned with the illness...
July 2016: Journal of Travel Medicine
https://www.readbyqxmd.com/read/27773472/immunogenicity-of-live-attenuated-japanese-encephalitis-sa-14-14-2-vaccine-among-sri-lankan-children-with-previous-receipt-of-inactivated-je-vaccine
#14
Pushpa Ranjan Wijesinghe, M R Nihal Abeysinghe, Sutee Yoksan, Yafu Yao, Benli Zhou, Lei Zhang, Jessica A Fleming, Anthony A Marfin, John C Victor
BACKGROUND: The performance of live attenuated Japanese Encephalitis SA 14-14-2 vaccine (CD-JEV) among children previously given inactivated mouse brain-derived JE vaccine (IMBV) is unknown. We evaluated the safety and immunogenicity of CD-JEV administered to 2- and 5-year-old children in Sri Lanka. METHODS: In this open-label, single arm trial in the Colombo District of Sri Lanka, generally healthy children 2 and 5years of age who had previously received two and three doses of IMBV, respectively, were administered one dose of CD-JEV subcutaneously...
November 21, 2016: Vaccine
https://www.readbyqxmd.com/read/27756212/japanese-encephalitis-vaccine-facilitated-dengue-virus-infection-enhancement-antibody-in-adults
#15
Yuka Saito, Meng Ling Moi, Nozomi Takeshita, Chang-Kweng Lim, Hajime Shiba, Kuniaki Hosono, Masayuki Saijo, Ichiro Kurane, Tomohiko Takasaki
BACKGROUND: Dengue virus (DENV) and Japanese encephalitis virus (JEV) belong to the genus Flavivirus, and infection with a virus within this genus induces antibodies that are cross-reactive to other flaviviruses. Particularly in DENV infection, antibodies to DENV possess two competing activities: neutralizing activity and infection-enhancing activity. These antibody activities are considered central in modulating clinical outcomes of DENV infection. Here, we determined the neutralizing and infection-enhancing activity of DENV cross-reactive antibodies in adults before and after JE vaccination...
October 18, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27743649/electroporation-enhances-protective-immune-response-of-a-dna-vaccine-against-japanese-encephalitis-in-mice-and-pigs
#16
Ziyang Sheng, Na Gao, Xiaoyun Cui, Dongying Fan, Hui Chen, Na Wu, Jianchun Wei, Jing An
Japanese encephalitis virus (JEV) is a pathogenic cause of Japanese Encephalitis (JE), which is a zoonotic disease transmitted by mosquitoes and amplified by pigs. Infection of JEV may lead to severe neurological sequelae, even death in humans and reproductive disorders in pigs. Vaccination is the only way to control JEV infection in humans. For pigs play important role in the JEV transmission cycle, developing a new veterinary vaccine is considered as a useful strategy for cutting off the transmission route of JEV...
October 12, 2016: Vaccine
https://www.readbyqxmd.com/read/27727408/safety-of-live-attenuated-japanese-encephalitis-vaccine-given-at-the-age-of-9-months-in-national-immunisation-programme-of-sri-lanka
#17
K Sanchayan, R Fernandopulle, A Amarasinghe, S N Thiyahiny, S Sri Ranganathan
OBJECTIVES: This study was designed to describe the safety profile of the single dose live attenuated Japanese encephalitis vaccine (LJEV) SA-14-14-2 given at the age of 9 months in the National Immunisation programme of Sri Lanka. METHODS: cohort event monitoring (CEM) was conducted in the Jaffna district during November 2012 to January 2015. A representative sample of 3041 infants who received the LJEV at the age of 9 months was followed up actively over telephone interviews on days 1, 3, 14, 30 and 45 for adverse events (AE)...
2016: Ceylon Medical Journal
https://www.readbyqxmd.com/read/27715427/tick-borne-encephalitis-what-travelers-should-know-when-visiting-an-endemic-country
#18
Aleš Chrdle, Václav Chmelík, Daniel Růžek
Tick-borne encephalitis (TBE) is an acute febrile illness with neurological manifestations that is prevalent in forested areas of moderate climate in Europe and Asia. TBE virus is transmitted by ticks and rarely by unpasteurized milk and dairy products. The disease burden is attributed mainly to resulting long-term disability, especially in individuals over 50 y of age. Currently, there is no causative treatment, but a very effective vaccination is available with a good safety profile. The vaccination requires 3 basic doses to be fully effective and regular boosters afterwards...
October 2, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27702638/application-of-various-control-strategies-to-japanese-encephalitic-a-mathematical-study-with-human-pig-and-mosquito
#19
A De, K Maity, Soovoojeet Jana, M Maiti
Japanese encephalitis (JE) is a public health problem that threats the entire world today. Japanese Encephalitis virus (JEV) mostly became a threat due to the significant number of increase of susceptible mosquito vectors and vertebrate hosts in Asia by which around 70,000 cases and 10,000 deaths per year took place in children below 15 years of age. In this paper, a mathematical model of JE due to JEV from the vector source (infected mosquito) and two vertebrate hosts (infected human and infected pig) is formulated...
December 2016: Mathematical Biosciences
https://www.readbyqxmd.com/read/27692881/decreased-vaccine-antibody-titers-following-exposure-to-multiple-metals-and-metalloids-in-e-waste-exposed-preschool-children
#20
Xinjiang Lin, Xijin Xu, Xiang Zeng, Long Xu, Zhijun Zeng, Xia Huo
We explored acquired immunity resulting from vaccination in 3 to 7-year-old children, chronically exposed to multiple heavy metals and metalloids, in an e-waste recycling area (Guiyu, China). Child blood levels of ten heavy metals and metalloids, including lead (Pb), arsenic (As), mercury (Hg), chromium (Cr), cadmium (Cd), manganese (Mn), nickel (Ni), copper (Cu), zinc (Zn) and selenium (Se), and seven vaccine antibodies (diphtheria, pertussis, tetanus, hepatitis B, Japanese encephalitis, polio, measles) were measured...
January 2017: Environmental Pollution
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