Rapid Assessment of Zika Virus (ZIKV) Complications (R21)

Funding Opportunity PAR-16-106 from the NIH Guide for Grants and Contracts. The purpose of this Funding Opportunity Announcement (FOA) is to provide an expedited (rapid) funding mechanism for research on Zika virus (ZIKV) and its complications.ZIKV is a single-stranded RNA virus of the Flaviviridae family. It is transmitted to humans primarily through the bites of infected Aedes mosquitos, though both perinatal/in utero and sexual transmission have been reported.Initially discovered in 1947, it has been reported in the Americas since 2014, with a major outbreak in Brazil starting in 2015.Disease is seen in about 20% of infected people and is usually self-limited.However, a possible association between ZIKV infection in pregnant women and severe microcephaly in their babies has been very concerning and prompted the World Health Organization to declare this potential complication a public health emergency. Additionally the virus has been found in blood, fueling growing concerns about the risk of transfusion-transmissionwith particular concern over severe outcomes in at risk transfusion recipient populations such as women who are pregnant.
Source: NIH Funding Opportunities (Notices, PA, RFA) - Category: Research Source Type: funding

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Authors: Wilder-Smith A, Preet R, Brickley EB, Ximenes RAA, Miranda-Filho DB, Turchi Martelli CM, Araújo TVB, Montarroyos UR, Moreira ME, Turchi MD, Solomon T, Jacobs BC, Villamizar CP, Osorio L, de Filipps AMB, Neyts J, Kaptein S, Huits R, Ariën KK, Willison HJ, Edgar JM, Barnett SC, Peeling R, Boeras D, Guzman MG, de Silva AM, Falconar AK, Romero-Vivas C, Gaunt MW, Sette A, Weiskopf D, Lambrechts L, Dolk H, Morris JK, Orioli IM, O'Reilly KM, Yakob L, Rocklöv J, Soares C, Ferreira MLB, Franca RFO, Precioso AR, Logan J, Lang T, Jamieson N, Massad E Abstract Zika Preparedness Latin American Network ...
Source: Global Health Action - Category: International Medicine & Public Health Tags: Glob Health Action Source Type: research
We examined the serum antibody response to ZIKV and other flaviviruses in Brazilian women giving birth during the 2015–2016 outbreak. Infected pregnancies with intermediate or higher ZIKV antibody enhancement titers were at increased risk to give birth to microcephalic infants compared with those with lower titers (P
Source: The Journal of Experimental Medicine - Category: Internal Medicine Authors: Tags: Infectious Disease and Host Defense Articles Source Type: research
Zika virus (ZIKV) was a re-emerging arbovirus associated with Guillain–Barré Syndrome in adult and congenital Zika syndrome in fetus and infant. Although ZIKV was mainly transmitted by mosquito bites, many sexual transmission cases have been reported since the outbreak in 2015. ZIKV can persist in testis and semen for a long time, causing testicular tissue damage and reducing sperm quality. However, no drug has been approved for prevention or treatment of ZIKV infection, especially infection in male testicular tissue. Previously reported peptide Z2 could inactivate ZIKV, inhibiting ZIKV infection in vitro and ...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
her For the first 60 years following its isolation, Zika virus (ZIKV) remained a relatively poorly described member of the Flaviviridae family. However, since 2007, it has caused a series of increasingly severe outbreaks and is now associated with neurological symptoms such as Guillain-Barré syndrome and congenital Zika syndrome (CZS). A number of reports have improved our understanding of rare complications that may be associated with ZIKV infection in adults, the areas of the body to which it spreads, and viral persistence in various tissues. Likewise, studies on the effect of ZIKV infection during pregnan...
Source: Viruses - Category: Virology Authors: Tags: Review Source Type: research
In this study, we report for the first time that highly diluted ethanol extracts prepared from basil leaves can effectively inhibit ZIKV replication in Vero E6 cells with a half maximal inhibitory concentration (IC50) value of 1:134. The diluted extract as well as the amount of ethanol that goes into its preparation have been found to be completely non-toxic to the above mentioned cell line. The extract seems to inhibit the virus at the step of attachment and entry into the host cell. The specific inhibition of ZIKV observed using the basil leaf extract suggests a new alternative mode of treatment against flavivirus. Keywo...
Source: Acta Virologica - Category: Infectious Diseases Authors: Tags: Acta Virol Source Type: research
Publication date: Available online 4 September 2019Source: Antiviral ResearchAuthor(s): Antonio E. Muruato, Chao Shan, Camila R. Fontes-Garfias, Yang Liu, Qiang Gao, Scott C. Weaver, Pei-Yong ShiAbstractZika virus (ZIKV) has drawn global attention as the etiologic agent of Zika Congenital Syndrome in babies born to infected pregnant women. To prevent future ZIKV outbreaks and protect persons at risk for severe disease, we developed two live-attenuated vaccine (LAV) candidates containing 10- or 20-nucleotide deletions in the 3′UTR of the viral genome (Δ10 and Δ20). After a single-dose immunization, both &D...
Source: Antiviral Therapy - Category: Virology Source Type: research
Abstract Zika virus (ZIKV) has drawn global attention as the etiologic agent of Zika Congenital Syndrome in babies born to infected pregnant women. To prevent future ZIKV outbreaks and protect persons at risk for severe disease, we developed two live-attenuated vaccine (LAV) candidates containing 10- or 20-nucleotide deletions in the 3'UTR of the viral genome (Δ10 and Δ20). After a single-dose immunization, both Δ10 and Δ20 LAVs protected mice and non-human primates against ZIKV infection. Here, we characterized the stability, safety, and efficacy of the LAVs after continuously culturing th...
Source: Antiviral Research - Category: Virology Authors: Tags: Antiviral Res Source Type: research
ard Hildt Infection with Zika virus (ZIKV) came first to public attention after it was found to be associated with congenital microcephaly during the outbreak in Brazil (2015–2016). Diagnosis of ZIKV suffers from extensive cross-reactivity with other Flaviviruses, which are circulating in many ZIKV epidemic areas. Due to the fatal outcome of ZIKV infection during pregnancy, detailed knowledge about neutralizing and non-neutralizing epitopes is crucial for the development of robust detection systems of protective antibodies. Therefore, additional information about ZIKV immunogenicity and antibody response is requi...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
During the 2015-16 Zika virus (ZIKV) outbreak in Brazil, hospital surveillance for congenital Zika infection (CZI) was conducted at the Jos é Maria de Magalhães Neto reference maternity hospital, located in Salvador-Brazil, between February and December 20161. Normocephalic infants with prenatal exposure to ZIKV were recruited if their serological testing or a polymerase-chain-reaction assay (PCR) for ZIKV were positive. All their mot hers reported ZIKV infection symptoms during pregnancy and had anti-ZIKV IgG positivity at the time of delivery.
Source: Pediatric Neurology - Category: Neurology Authors: Tags: Research Letter Source Type: research
Conclusions: We observed a high frequency of gestational and neonatal complications in pregnant women who acquired Zika infection, especially in early pregnancy, resulting in a broad spectrum of clinical manifestations. Preventive measures are urgently needed to reduce the clinical burden during future Zika outbreaks.
Source: The Pediatric Infectious Disease Journal - Category: Infectious Diseases Tags: Maternal-Neonatal Reports Source Type: research
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