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https://www.readbyqxmd.com/read/28633549/an-update-on-zika-vaccine-developments
#1
Anna Durbin, Annelies Wilder-Smith
The devastating consequences of congenital Zika virus (ZIKV) infection led to a global response directed toward a better understanding of the epidemiology and pathogenesis of ZIKV and to efforts at vaccine development. As a result, there are currently 45 ZIKV vaccine candidates in development. Areas covered: Both traditional (purified inactivated, live attenuated, viral-vectored, recombinant sub-unit) and novel (DNA, self-replicating RNA, mRNA) vaccine platforms are being utilized. For emergency use, vaccines that are appropriate for women of child-bearing age (including pregnant women) are being developed...
June 21, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28615701/revisiting-zika-and-rubella
#2
Adolfo Martinez-Palomo
Three months after the World Health Organization declared the epidemic of Zika virus infections to be a Public Health Emergency of International Concern, we can look back at what we have learned and prospects for controlling the disease. Although Zika virus infections may explain many cases of brain damage in newborns, it may not be the only cause. We need a clear association between confirmed cases of Zika infections in pregnant women and microcephaly in newborns. Until we reach a firm conclusion, past experience with another virus that causes damage to newborns offers some hope...
August 2016: Journal of Public Health Policy
https://www.readbyqxmd.com/read/28614803/delineating-antibody-recognition-against-zika-virus-during-natural-infection
#3
Lei Yu, Ruoke Wang, Fei Gao, Min Li, Jianying Liu, Jian Wang, Wenxin Hong, Lingzhai Zhao, Yingfen Wen, Chibiao Yin, Hua Wang, Qi Zhang, Yangyang Li, Panpan Zhou, Rudian Zhang, Yang Liu, Xiaoping Tang, Yongjun Guan, Cheng-Feng Qin, Ling Chen, Xuanling Shi, Xia Jin, Gong Cheng, Fuchun Zhang, Linqi Zhang
Zika virus (ZIKV) is an emerging mosquito-transmitted flavivirus that shares a considerable degree of homology with dengue virus (DENV). Here, we examined longitudinal antibody response against ZIKV during natural infection in 2 convalescent individuals. By decomposing the antibody recognition into DI/DII and DIII of the E glycoprotein, we showed their development in humans followed a spatiotemporal hierarchy. Plasma binding to DI/DII appeared to peak and wane during early infection with extensive cross-reactivity with DI/DII of DENV...
June 15, 2017: JCI Insight
https://www.readbyqxmd.com/read/28614387/global-sensing-of-the-antigenic-structure-of-herpes-simplex-virus-gd-using-high-throughput-array-based-spr-imaging
#4
Tina M Cairns, Noah T Ditto, Huan Lou, Benjamin D Brooks, Doina Atanasiu, Roselyn J Eisenberg, Gary H Cohen
While HSV-2 typically causes genital lesions, HSV-1 is increasingly the cause of genital herpes. In addition, neonatal HSV infections are associated with a high rate of mortality and HSV-2 may increase the risk for HIV or Zika infections, reinforcing the need to develop an effective vaccine. In the GSK Herpevac trial, doubly sero-negative women were vaccinated with a truncated form of gD2 [gD2(284t)], then examined for anti-gD serum titers and clinical manifestations of disease. Surprisingly, few vaccinees were protected against genital HSV-2 but 86% were protected from genital HSV-1...
June 14, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28608813/zika-virus-recent-advances-towards-the-development-of-vaccines-and-therapeutics
#5
REVIEW
Monica A McArthur
Zika is a rapidly emerging public health threat. Although clinical infection is frequently mild, significant neurological manifestations have been demonstrated in infants born to Zika virus (ZIKV) infected mothers. Due to the substantial ramifications of intrauterine infection, effective counter-measures are urgently needed. In order to develop effective anti-ZIKV vaccines and therapeutics, improved animal models and a better understanding of immunological correlates of protection against ZIKV are required...
June 13, 2017: Viruses
https://www.readbyqxmd.com/read/28601976/zika-virus-as-an-emerging-neuropathogen-mechanisms-of-neurovirulence-and-neuro-immune-interactions
#6
REVIEW
Gerwyn Morris, Tatiana Barichello, Brendon Stubbs, Cristiano A Köhler, André F Carvalho, Michael Maes
Zika virus (ZIKV) is an emerging arbovirus of the genus Flaviviridae, which causes a febrile illness and has spread from across the Pacific to the Americas in a short timeframe. Convincing evidence has implicated the ZIKV to incident cases of neonatal microcephaly and a set of neurodevelopmental abnormalities referred to as the congenital Zika virus syndrome. In addition, emerging data points to an association with the ZIKV and the development of the so-called Guillain-Barre syndrome, an acute autoimmune polyneuropathy...
June 11, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28600536/imipramine-inhibits-chikungunya-virus-replication-in-human-skin-fibroblasts-through-interference-with-intracellular-cholesterol-trafficking
#7
Sineewanlaya Wichit, Rodolphe Hamel, Eric Bernard, Loïc Talignani, Fodé Diop, Pauline Ferraris, Florian Liegeois, Peeraya Ekchariyawat, Natthanej Luplertlop, Pornapat Surasombatpattana, Frédéric Thomas, Andres Merits, Valérie Choumet, Pierre Roques, Hans Yssel, Laurence Briant, Dorothée Missé
Chikungunya virus (CHIKV) is an emerging arbovirus of the Togaviridae family that poses a present worldwide threat to human in the absence of any licensed vaccine or antiviral treatment to control viral infection. Here, we show that compounds interfering with intracellular cholesterol transport have the capacity to inhibit CHIKV replication in human skin fibroblasts, a major viral entry site in the human host. Pretreatment of these cells with the class II cationic amphiphilic compound U18666A, or treatment with the FDA-approved antidepressant drug imipramine resulted in a near total inhibition of viral replication and production at the highest concentration used without any cytotoxic effects...
June 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28598790/croi-2017-advances-in-antiretroviral-therapy
#8
Joyce Jones, Barbara S Taylor, Hong-Van Tieu, Timothy J Wilkin
The 2017 Conference on Retroviruses and Opportunistic Infections (CROI) featured exciting preclinical data on investigational antiretroviral agents with good in vitro efficacy and long half-lives. Investigational medications, including bictegravir, demonstrated excellent efficacy and tolerability, as did dual-agent therapy with dolutegravir paired with rilpivirine or with lamivudine. Dolutegravir monotherapy proved inadvisable due to virologic failure and resistance. The gap between high- and low-income settings along the HIV care continuum is narrowing, with Zimbabwe, Malawi, and Zambia approaching the 90-90-90 targets established by the joint United Nations Programme on HIV/AIDS (UNAIDS), whereas communities in the Southern United States are falling behind...
May 2017: Topics in Antiviral Medicine
https://www.readbyqxmd.com/read/28597088/viral-polymerase-inhibitors-t-705-and-t-1105-are-potential-inhibitors-of-zika-virus-replication
#9
Lei Cai, Yajie Sun, Yabin Song, Likun Xu, Zhuchun Bei, Dongna Zhang, Yuanyuan Dou, Hongquan Wang
Since 2015, 69 countries and territories have reported evidence of vector-borne Zika virus (ZIKV) transmission. Currently, there are no effective licensed vaccines or drugs available for the treatment or prevention of ZIKV infection. We tested a series of compounds for their ability to inhibit ZIKV replication in cell culture. The compounds in T-705 (favipiravir) and T-1105 were found to have antiviral activity, suggesting that these compounds are promising candidates for further development as specific antiviral drugs against ZIKV...
June 8, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28595824/zika-in-the-americas-year-2-what-have-we-learned-what-gaps-remain-a-report-from-the-global-virus-network
#10
REVIEW
Matthew T Aliota, Leda Bassit, Shelton S Bradrick, Bryan Cox, Mariano A Garcia-Blanco, Christina Gavegnano, Thomas C Friedrich, Thaddeus G Golos, Diane E Griffin, Andrew Haddow, Esper G Kallas, Uriel Kitron, Marc Lecuit, Diogo M Magnani, Caroline Marrs, Natalia Mercer, Edward McSweegan, Lisa Ng, David H O'Connor, Jorge E Osorio, Guilherme S Ribeiro, Michael Ricciardi, Shannan L Rossi, George Saade, Raymond F Schinazi, Geraldine O Schott-Lerner, Chao Shan, Pei-Yong Shi, David I Watkins, Nikos Vasilakis, Scott C Weaver
In response to the outbreak of Zika virus (ZIKV) infection in the Western Hemisphere and the recognition of a causal association with fetal malformations, the Global Virus Network (GVN) assembled an international taskforce of virologists to promote basic research, recommend public health measures and encourage the rapid development of vaccines, antiviral therapies and new diagnostic tests. In this article, taskforce members and other experts review what has been learned about ZIKV disease in humans, its modes of transmission and the cause and nature of associated congenital manifestations...
June 5, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28594787/measures-taken-to-prevent-zika-virus-infection-during-pregnancy-puerto-rico-2016
#11
Denise V D'Angelo, Beatriz Salvesen von Essen, Mark J Lamias, Holly Shulman, Wanda I Hernandez-Virella, Aspy J Taraporewalla, Manuel I Vargas, Leslie Harrison, Sascha R Ellington, Leslianne Soto, Tanya Williams, Aurea Rodriguez, Carrie K Shapiro-Mendoza, Brenda Rivera, Shanna Cox, Karen Pazol, Marion E Rice, Deborah L Dee, Lisa Romero, Eva Lathrop, Wanda Barfield, Ruben A Smith, Denise J Jamieson, Margaret A Honein, Carmen Deseda, Lee Warner
Zika virus infection during pregnancy remains a serious health threat in Puerto Rico. Infection during pregnancy can cause microcephaly, brain abnormalities, and other severe birth defects (1). From January 1, 2016 through March 29, 2017, Puerto Rico reported approximately 3,300 pregnant women with laboratory evidence of possible Zika virus infection (2). There is currently no vaccine or intervention to prevent the adverse effects of Zika virus infection during pregnancy; therefore, prevention has been the focus of public health activities, especially for pregnant women (3)...
June 9, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28592527/zika-virus-hijacks-stress-granule-proteins-and-modulates-the-host-stress-response
#12
Shangmei Hou, Anil Kumar, Zaikun Xu, Adriana M Airo, Iryna Stryapunina, Cheung Pang Wong, William Branton, Egor Tchesnokov, Matthias Götte, Christopher Power, Tom C Hobman
Zika virus (ZIKV), a member of the Flaviviridae family, has recently emerged as an important human pathogen with increasing economic and health impact worldwide. Because of its teratogenic nature and association with the serious neurological condition Guillain-Barré syndrome, a tremendous amount of effort has focused on understanding ZIKV pathogenesis. To gain further insights into ZIKV interaction with host cells, we investigated how this pathogen affects stress response pathways. While ZIKV infection induces stress signaling that leads to phosphorylation of eIF2α and cellular translational arrest, stress granule (SG) formation was inhibited...
June 7, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28590221/evaluation-of-pyriproxyfen-dissemination-via-aedes-albopictus-from-a-point-source-larvicide-application-in-northeast-florida
#13
Aaron M Lloyd, Muhammad Farooq, Alden S Estep, Rui-De Xue, Daniel L Kline
The Asian tiger mosquito, Aedes albopictus , ranks among the most important vectors of dengue fever, Zika virus, and chikungunya virus. With no specific medications or vaccines available, vector control is the only way to combat these diseases. Autodissemination of the insect growth regulator pyriproxyfen (NyGuard®) from a point-source treatment was evaluated in field settings in northeast Florida. The objective of this study was to investigate the possibility of pyriproxyfen dissemination from a treatment site to nontreated oviposition sites via the skip oviposition behavior of Ae...
June 2017: Journal of the American Mosquito Control Association
https://www.readbyqxmd.com/read/28589934/dna-vaccination-protects-mice-against-zika-virus-induced-damage-to-the-testes
#14
Bryan D Griffin, Kar Muthumani, Bryce M Warner, Anna Majer, Mable Hagan, Jonathan Audet, Derek R Stein, Charlene Ranadheera, Trina Racine, Marc-Antoine De La Vega, Jocelyne Piret, Stephanie Kucas, Kaylie N Tran, Kathy L Frost, Christine De Graff, Geoff Soule, Leanne Scharikow, Jennifer Scott, Gordon McTavish, Valerie Smid, Young K Park, Joel N Maslow, Niranjan Y Sardesai, J Joseph Kim, Xiao-Jian Yao, Alexander Bello, Robbin Lindsay, Guy Boivin, Stephanie A Booth, Darwyn Kobasa, Carissa Embury-Hyatt, David Safronetz, David B Weiner, Gary P Kobinger
Zika virus (ZIKV) is an emerging pathogen causally associated with serious sequelae in fetuses, inducing fetal microcephaly and other neurodevelopment defects. ZIKV is primarily transmitted by mosquitoes, but can persist in human semen and sperm, and sexual transmission has been documented. Moreover, exposure of type-I interferon knockout mice to ZIKV results in severe damage to the testes, epididymis and sperm. Candidate ZIKV vaccines have shown protective efficacy in preclinical studies carried out in animal models, and several vaccines have entered clinical trials...
June 7, 2017: Nature Communications
https://www.readbyqxmd.com/read/28579320/t-cell-immunity-and-zika-virus-vaccine-development
#15
REVIEW
Noemia S Lima, Morgane Rolland, Kayvon Modjarrad, Lydie Trautmann
The recent Zika virus (ZIKV) epidemic has created an urgent need for a safe and effective vaccine. There is still a dearth of knowledge about ZIKV immunity, but years of investigation into the immunobiology of other flaviviruses has helped to accelerate the development of a ZIKV vaccine. Although the humoral immune response generates the primary correlate of protection from disease, robust T cell responses could enhance ZIKV vaccine efficacy. Additionally, pre-existing immunity to related flaviviruses could generate cross-reactive T cells that may affect immune responses upon vaccination...
June 1, 2017: Trends in Immunology
https://www.readbyqxmd.com/read/28577343/de-novo-rna-synthesis-catalyzed-by-the-zika-virus-rna-polymerase-domain
#16
Christina Calmels, Michel Ventura, Cindy Aknin, Mathieu Métifiot, Marie-Line Andreola
Mosquito- and tick-borne pathogens including Chikungunya, Dengue, Japanese encephalitis, West Nile, Yellow fever and Zika virus, represent a new economic and public health challenge. In the absence of effective vaccines and specific therapies, only supportive regimens are administrated for most of these infections. Thus, the development of a targeted therapy is mandatory to stop the rapid progression of these pathogens and preoccupant associated burdens such as Guillain-Barre syndrome, microcephaly. For this, it is essential to develop biochemical tools to help study and target key viral enzymes involved in replication such as helicase complexes, methyl-transferases and RNA-dependent RNA polymerases...
June 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28574621/prospects-for-induction-of-cd8-t-cell-mediated-immunity-to-zika-virus-infection-by-yellow-fever-virus-yfv-vaccination
#17
Kim Blom, John Tyler Sandberg, Karin Loré, Hans-Gustaf Ljunggren
The Zika virus epidemic represents an unprecedented health crisis affecting significant parts of the world (1) . On February 1(st) 2016, the WHO declared the reported clusters of Zika-virus induced microcephaly and other neurological disorders a Public Health Emergency of International Concern (PHEIC). The epidemic is currently ongoing in Latin America and the Caribbean, with impacts of the infection already seen in large populations of Brazil, Colombia, Mexico, Peru and beyond. No specific treatment or vaccine is available, although several candidates are under development (2) ...
June 2, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28560654/newer-vaccines-against-mosquito-borne-diseases
#18
Anju Aggarwal, Neha Garg
Mosquitos are responsible for a number of protozoal and viral diseases. Malaria, dengue, Japanese encephalitis (JE) and chikungunya epidemics occur commonly all over the world, leading to marked mortality and morbidity in children. Zika, Yellow fever and West Nile fever are others requiring prevention. Environmental control and mosquito bite prevention are useful in decreasing the burden of disease but vaccination has been found to be most cost-effective and is the need of the hour. RTS,S/AS01 vaccine is the first malaria vaccine being licensed for use against P...
May 31, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28552102/advances-in-research-on-zika-virus
#19
REVIEW
Amjad Ali, Braira Wahid, Shazia Rafique, Muhammad Idrees
Zika virus (ZIKV) is rapidly spreading across the America and its devastating outcomes for pregnant women and infants have driven this previously ignored pathogen into the limelight. Clinical manifestations are fever, joint pain or rash and conjunctivitis. Emergence of ZIKV started with a first outbreak in the Pacific area in 2007, a second large outbreak occurred in the Pacific in 2013/2014 and subsequently the virus spread in other Pacific islands. Threat of explosive global pandemic and severe clinical complications linked with the more immediate and recurrent epidemics necessitate the development of an effective vaccine...
April 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28542611/no-molecular-or-serological-evidence-of-zikavirus-infection-among-healthy-blood-donors-living-in-or-travelling-to-regions-where-aedes-albopictus-circulates
#20
Wegene Borena, Tamara Hofer, Karin Stiasny, Stephan W Aberle, Manfred Gaber, Dorothee von Laer, Harald Schennach
BACKGROUND: Previous studies have shown that Zika virus can infect and be transmitted by A. albopictus. The World Health organization (WHO) has raised concerns of autochthonous transmission of the virus in regions where the vector is endemic. The aim of this pilot study was to assess the occurrence of Zika virus (ZIKV) in western Austria (Tyrol) especially after a history of travel to A. albopictus endemic regions. METHODS: The study participants were healthy blood donors at randomly selected donation sites in the west Austrian region Tyrol...
2017: PloS One
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