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https://www.readbyqxmd.com/read/28179396/the-antigenic-structure-of-zika-virus-and-its-relation-to-other-flaviviruses-implications-for-infection-and-immunoprophylaxis
#1
REVIEW
Franz X Heinz, Karin Stiasny
Zika virus was discovered ∼70 years ago in Uganda and maintained a low profile as a human disease agent in Africa and Asia. Only recently has it caused explosive outbreaks in previously unaffected regions, first in Oceania and then in the Americas since 2015. Of special concern is the newly identified link between congenital malformations (especially microcephaly) and Zika virus infections during pregnancy. At present, it is unclear whether Zika virus changed its pathogenicity or whether the huge number of infections allowed the recognition of a previously cryptic pathogenic property...
March 2017: Microbiology and Molecular Biology Reviews: MMBR
https://www.readbyqxmd.com/read/28177195/high-incidence-of-zika-virus-infection-detected-in-plasma-and-cervical-cytology-specimens-from-pregnant-women-in-guayaquil-ecuador
#2
Hector Zambrano, Jesse Waggoner, Karina León, Benjamin Pinsky, Ketty Vera, Marissa Schettino, Lisette Rivera, José Landivar, María Granda, Angela Lee, Gil Mor
Zika virus (ZIKV) infection during pregnancy has been linked to severe birth defects, and the epidemiologic situation of the ZIKV epidemic in Ecuador is poorly understood. Guayaquil, Ecuador, has a tropical climate and experiences frequent outbreaks of dengue and chikungunya virus, and in December 2015, ZIKV was identified. Given the well-documented effects of ZIKV in pregnancy, including microcephaly, we tested for the presence of ZIKV in both plasma and cervical cytology of pregnant women. We report the identification of a population of pregnant women with a high incidence of ZIKV infection detected in the plasma and lower reproductive tract...
February 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28148289/a-rare-case-of-dengue-encephalopathy-complicating-a-term-pregnancy
#3
Lavanya Rajagopala, Ravindra L Satharasinghe, Madhava Karunarathna
BACKGROUND: Dengue fever has an expanded clinical spectrum ranging from an asymptomatic infection to life threatening dengue hemorrhagic fever and refractory shock. Dengue infection in pregnancy can be a diagnostic dilemma, particularly considering the physiological changes in pregnancy and the obstetric complications encountered in clinical practice. Hence the knowledge of its diagnosis and management in its atypical presentations is of paramount importance. Here we report an unusual case of uncomplicated dengue encephalopathy in a term mother, probably the first to be reported from the Indian subcontinent...
February 2, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28126366/testing-for-zika-virus-infection-in-pregnancy-key-concepts-to-deal-with-an-emerging-epidemic
#4
REVIEW
Catherine Eppes, Martha Rac, James Dunn, James Versalovic, Kristy O Murray, Melissa A Suter, Magda Sanz Cortes, Jimmy Espinoza, Maxim D Seferovic, Wesley Lee, Peter Hotez, Joan Mastrobattista, Steven L Clark, Michael A Belfort, Kjersti M Aagaard
Zika virus is an emerging mosquito-borne (Aedes genus) arbovirus of the Flaviviridae family. Following epidemics in Micronesia and French Polynesia during the past decade, more recent Zika virus infection outbreaks were first reported in South America as early as May 2013 and spread to now 50 countries throughout the Americas. Although no other flavivirus has previously been known to cause major fetal malformations following perinatal infection, reports of a causal link between Zika virus and microcephaly, brain and ocular malformations, and fetal loss emerged from hard-hit regions of Brazil by October 2015...
January 23, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28088588/dengue-infection-in-pregnancy-and-its-impact-on-the-placenta
#5
Christiane Fernandes Ribeiro, Vânia Glória Silami Lopes, Patrícia Brasil, Andrea Rodrigues Cordovil Pires, Roger Rohloff, Rita Maria Ribeiro Nogueira
A histopathological and immunohistochemical study was conducted in placental tissues and retained products of conception from 24 patients with confirmed dengue infection during pregnancy. The immunohistochemical assay was positive for dengue virus in 19 placental and three ovular remnants analyzed. The light microscopic findings were signs of hypoxia, choriodeciduitis, deciduitis and intervillositis and the viral antigens were found in cytoplasmic of the trophoblast, villous stroma and decidua. Our results suggest that immunohistochemistry could be used as a laboratory confirmation method for dengue in pregnant women, especially in endemic areas when embedded material is the only material available...
January 11, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28069378/role-of-n-glycosylation-on-zika-virus-e-protein-secretion-viral-assembly-and-infectivity
#6
M Mossenta, S Marchese, M Poggianella, J L Slon Campos, O R Burrone
Zika virus has rapidly spread reaching a global distribution pattern similar to that of dengue virus, and has been associated with serious neurological and developmental pathologies, like congenital malformation during pregnancy and Guillain-Barré syndrome. Sequence analysis of different clinical and laboratory isolates has shown the existence of mutants with loss of the conserved N-glycosylation motif on domain I of protein E that is common to all flaviviruses. We found that loss of E N-linked glycosylation leads to compromised expression and secretion of E ectodomain from mammalian cells...
January 6, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28045901/zika-virus-infection-as-a-cause-of-congenital-brain-abnormalities-and-guillain-barr%C3%A3-syndrome-systematic-review
#7
Fabienne Krauer, Maurane Riesen, Ludovic Reveiz, Olufemi T Oladapo, Ruth Martínez-Vega, Teegwendé V Porgo, Anina Haefliger, Nathalie J Broutet, Nicola Low
BACKGROUND: The World Health Organization (WHO) stated in March 2016 that there was scientific consensus that the mosquito-borne Zika virus was a cause of the neurological disorder Guillain-Barré syndrome (GBS) and of microcephaly and other congenital brain abnormalities based on rapid evidence assessments. Decisions about causality require systematic assessment to guide public health actions. The objectives of this study were to update and reassess the evidence for causality through a rapid and systematic review about links between Zika virus infection and (a) congenital brain abnormalities, including microcephaly, in the foetuses and offspring of pregnant women and (b) GBS in any population, and to describe the process and outcomes of an expert assessment of the evidence about causality...
January 2017: PLoS Medicine
https://www.readbyqxmd.com/read/27998318/management-of-severe-dengue-hemorrhagic-fever-and-bleeding-complications-in-a-primigravida%C3%A2-patient-a-case-report
#8
Hori Hariyanto, Corry Quando Yahya, Primartanto Wibowo, Oloan E Tampubolon
BACKGROUND: The incidence of dengue hemorrhagic fever is increasing among the adult population living in endemic areas. The disease carries a 0.73% fatality rate for the general population, but what happens when the disease strikes a special subpopulation group, the obstetrics? Perhaps the important question specific to this special subpopulation revolves around the right time and mode of delivery under severe coagulopathy and plasma leakage in conditions of imminent delivery. CASE PRESENTATION: A 24-year-old primigravid Sundanese woman presented to our intensive care unit due to acute pulmonary edema secondary to massive plasma leakage caused by severe dengue...
December 20, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27902502/zika-virus-and-patient-blood-management
#9
Lawrence T Goodnough, Marisa B Marques
Sporadic Zika virus infections had only occurred in Africa and Asia until an outbreak in Micronesia (Oceania) in 2007. In 2013 to 2014, several outer Pacific Islands reported local outbreaks. Soon thereafter, the virus was likely introduced in Brazil from competing athletes from French Polynesia and other countries that participated in a competition there. Transmission is thought to have occurred through mosquito bites and spread to the immunologically naive population. Being also a flavivirus, the Zika virus is transmitted by the Aedes mosquito that is endemic in South and Central America that is also the vector of West Nile virus, dengue, and chikungunya...
January 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27729840/virtual-screening-for-potential-inhibitors-of-ns3-protein-of-zika-virus
#10
Maheswata Sahoo, Lingaraja Jena, Sangeeta Daf, Satish Kumar
Zika virus (ZIKV) is a mosquito borne pathogen, belongs to Flaviviridae family having a positive-sense single-stranded RNA genome, currently known for causing large epidemics in Brazil. Its infection can cause microcephaly, a serious birth defect during pregnancy. The recent outbreak of ZIKV in February 2016 in Brazil realized it as a major health risk, demands an enhanced surveillance and a need to develop novel drugs against ZIKV. Amodiaquine, prochlorperazine, quinacrine, and berberine are few promising drugs approved by Food and Drug Administration against dengue virus which also belong to Flaviviridae family...
September 2016: Genomics & Informatics
https://www.readbyqxmd.com/read/27693308/zika-virus-infection-induces-cranial-neural-crest-cells-to-produce-cytokines-at-levels-detrimental-for-neurogenesis
#11
Nicholas L Bayless, Rachel S Greenberg, Tomek Swigut, Joanna Wysocka, Catherine A Blish
Zika virus (ZIKV) infection during pregnancy is linked to microcephaly, which is attributed to infection of developing brain structures. ZIKV infects neural progenitor cells in vitro, though its effects on other developmentally relevant stem cell populations, including cranial neural crest cells (CNCCs), have not been assessed. CNCCs give rise to most cranial bones and exert paracrine effects on the developing brain. Here, we report that CNCCs are productively infected by ZIKV, but not by the related dengue virus...
October 12, 2016: Cell Host & Microbe
https://www.readbyqxmd.com/read/27641777/association-between-zika-virus-infection-and-microcephaly-in-brazil-january-to-may-2016-preliminary-report-of-a-case-control-study
#12
Thalia Velho Barreto de Araújo, Laura Cunha Rodrigues, Ricardo Arraes de Alencar Ximenes, Demócrito de Barros Miranda-Filho, Ulisses Ramos Montarroyos, Ana Paula Lopes de Melo, Sandra Valongueiro, Maria de Fátima Pessoa Militão de Albuquerque, Wayner Vieira Souza, Cynthia Braga, Sinval Pinto Brandão Filho, Marli Tenório Cordeiro, Enrique Vazquez, Danielle Di Cavalcanti Souza Cruz, Cláudio Maierovitch Pessanha Henriques, Luciana Caroline Albuquerque Bezerra, Priscila Mayrelle da Silva Castanha, Rafael Dhalia, Ernesto Torres Azevedo Marques-Júnior, Celina Maria Turchi Martelli
BACKGROUND: The microcephaly epidemic, which started in Brazil in 2015, was declared a Public Health Emergency of International Concern by WHO in 2016. We report the preliminary results of a case-control study investigating the association between microcephaly and Zika virus infection during pregnancy. METHODS: We did this case-control study in eight public hospitals in Recife, Brazil. Cases were neonates with microcephaly. Two controls (neonates without microcephaly), matched by expected date of delivery and area of residence, were selected for each case...
December 2016: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/27526349/miscarriage-following-dengue-virus-3-infection-in-the-first-six-weeks-of-pregnancy-of-a-dengue-virus-naive-traveller-returning-from-bali-to-italy-april-2016
#13
Maurizio Zavattoni, Francesca Rovida, Giulia Campanini, Elena Percivalle, Antonella Sarasini, Graziella Cristini, Lina Rachele Tomasoni, Francesco Castelli, Fausto Baldanti
We report miscarriage following dengue virus (DENV)-3 infection in a pregnant woman returning from Bali to Italy in April 2016. On her arrival, the woman had fever, rash, asthenia and headache. DENV RNA was detected in plasma and urine samples collected the following day. Six days after symptom onset, she had a miscarriage. DENV RNA was detected in fetal material, but in utero fetal infection cannot be demonstrated due to possible contamination by maternal blood.
August 4, 2016: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/27490087/update-ongoing-zika-virus-transmission-puerto-rico-november-1-2015-july-7-2016
#14
Laura Adams, Melissa Bello-Pagan, Matthew Lozier, Kyle R Ryff, Carla Espinet, Jomil Torres, Janice Perez-Padilla, Mitchelle Flores Febo, Emilio Dirlikov, Alma Martinez, Jorge Munoz-Jordan, Myriam Garcia, Marangely Olivero Segarra, Graciela Malave, Aidsa Rivera, Carrie Shapiro-Mendoza, Asher Rosinger, Matthew J Kuehnert, Koo-Whang Chung, Lisa L Pate, Angela Harris, Ryan R Hemme, Audrey Lenhart, Gustavo Aquino, Sherif Zaki, Jennifer S Read, Stephen H Waterman, Luisa I Alvarado, Francisco Alvarado-Ramy, Miguel Valencia-Prado, Dana Thomas, Tyler M Sharp, Brenda Rivera-Garcia
Zika virus is a flavivirus transmitted primarily by Aedes aegypti and Aedes albopictus mosquitoes, and infection can be asymptomatic or result in an acute febrile illness with rash (1). Zika virus infection during pregnancy is a cause of microcephaly and other severe birth defects (2). Infection has also been associated with Guillain-Barré syndrome (GBS) (3) and severe thrombocytopenia (4,5). In December 2015, the Puerto Rico Department of Health (PRDH) reported the first locally acquired case of Zika virus infection...
August 5, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27467271/preventing-zika-virus-infection-during-pregnancy-using-a-seasonal-window-of-opportunity-for-conception
#15
Micaela Elvira Martinez
It has come to light that Zika virus (ZIKV) infection during pregnancy can result in trans-placental transmission to the fetus along with fetal death, congenital microcephaly, and/or Central Nervous System (CNS) malformations. There are projected to be >9,200,000 births annually in countries with ongoing ZIKV transmission. In response to the ZIKV threat, the World Health Organization (WHO) is strategically targeting prevention of infection in pregnant women and funding contraception in epidemic regions. I propose that the damaging effects of ZIKV can be reduced using a seasonal window of opportunity for conception that may minimize maternal exposure...
July 2016: PLoS Biology
https://www.readbyqxmd.com/read/27412976/zika-virus-infections
#16
F de Laval, I Leparc-Goffart, J-B Meynard, H Daubigny, F Simon, S Briolant
Since its discovery in 1947 in Uganda, the Zika virus (ZIKV) remained in the shadows emerging in 2007 in Micronesia, where hundreds of dengue-like syndromes were reported. Then, in 2013-2014, it was rife in French Polynesia, where the first neurological effects were observed. More recently, its arrival in Brazil was accompanied by an unusually high number of children with microcephaly born to mothers infected with ZIKV during the first trimester of pregnancy. In 2016, the World Health Organization declared ZIKV infection to be a public health emergency and now talks about a ZIKV pandemic...
May 1, 2016: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/27384840/dengue-as-a-cause-of-fever-during-pregnancy-a-report-of-two-cases
#17
Ariani Impieri Souza, Ana Laura Carneiro Gomes Ferreira, Matheus Alencar Arraes, Bruno Marcelo Moura, Maria Cynthia Braga
Dengue infection has not been routinely investigated among pregnant women and parturients with acute febrile syndrome in endemic settings. Here, we report two cases of dengue fever detected at the time of delivery in parturients enrolled in a cohort prospective study conducted in a hospital in Recife, Brazil. The parturients reported fever onset within seven days prior to delivery, and dengue infection was confirmed upon detection of viral ribonucleic acid (RNA) by using the reverse transcriptase-polymerase chain reaction...
May 2016: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/27366586/using-phenomenological-models-to-characterize-transmissibility-and-forecast-patterns-and-final-burden-of-zika-epidemics
#18
Gerardo Chowell, Doracelly Hincapie-Palacio, Juan Ospina, Bruce Pell, Amna Tariq, Sushma Dahal, Seyed Moghadas, Alexandra Smirnova, Lone Simonsen, Cécile Viboud
BACKGROUND: The World Health Organization declared the ongoing Zika virus (ZIKV) epidemic in the Americas a Public Health Emergency of International Concern on February 1, 2016. ZIKV disease in humans is characterized by a "dengue-like" syndrome including febrile illness and rash. However, ZIKV infection in early pregnancy has been associated with severe birth defects, including microcephaly and other developmental issues. Mechanistic models of disease transmission can be used to forecast trajectories and likely disease burden but are currently hampered by substantial uncertainty on the epidemiology of the disease (e...
2016: PLoS Currents
https://www.readbyqxmd.com/read/27323550/zika-virus-infection-vertical-transmission-and-foetal-congenital-anomalies
#19
EDITORIAL
Aziz-un-Nisa Abbasi
Zika virus (ZIKV) is an arbovirus belonging to flaviviridae family that includes Dengue, West Nile, and Yellow Fever among others. Zika virus was first discovered in 1947 in Zika forest of Uganda. It is a vector borne disease, which has been sporadically reported mostly from Africa, Pacific islands and Southeast Asia since its discovery. ZIKV infection presents as a mild illness with symptoms lasting for several days to a week after the bite of an infected mosquito. Majority of the patients have low grade fever, rash, headaches, joints pain, myalgia, and flu like symptoms...
January 2016: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/27257326/dengue-chikungunya-%C3%A2-and-the-missing-entity-zika-fever-a-new-emerging-threat
#20
REVIEW
Rina Tilak, Sougat Ray, V W Tilak, Sandip Mukherji
Zika virus (ZIKV), a relative newcomer from the flavivirus group that includes dengue, Japanese encepahalitis and yellow fever, is one of the emerging pathogens that is fast transcending geographical boundaries. It is a vector-borne disease transmitted by the same Aedes aegypti and Aedes albopictus, which cause dengue and chikungunya. In addition to the vector-mediated transmission of Zika fever, probable human-to-human transmission through exchange of body fluids, including sexual and perinatal transmission and through blood transfusion, makes containment of this new entity more challenging...
April 2016: Medical Journal, Armed Forces India
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