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Zika virus in pregnancy

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https://www.readbyqxmd.com/read/29683305/maternity-care-update-preconception-care
#1
Andrew Smith, Wendy B Barr, Erin Bassett-Novoa, Nicholas LeFevre
Family physicians are in a unique position to ensure that women receive preconception care. The Centers for Disease Control and Prevention, the American College of Obstetricians and Gynecologists, and the American Academy of Family Physicians recommend preconception care for all women, but particularly for women with comorbid conditions such as obesity, diabetes, and chronic hypertension. Family physicians should ask all women of reproductive age who are at risk of unintended pregnancy if they desire pregnancy within the next year and, based on this answer, provide counseling on contraception or preconception care...
April 2018: FP Essentials
https://www.readbyqxmd.com/read/29627357/estimating-the-numbers-of-pregnant-women-infected-with-zika-virus-and-infants-with-congenital-microcephaly-in-colombia-2015-2017
#2
Alys Adamski, Jeanne Bertolli, Carlos Castañeda-Orjuela, Owen J Devine, Michael A Johansson, Maritza Adegnis Gonzalez Duarte, Sarah C Tinker, Sherry L Farr, Marcela Maria Mercado Reyes, Van T Tong, Oscar Eduardo Pacheco Garcia, Diana Valencia, Diego Alberto Cuellar Ortiz, Margaret A Honein, Denise J Jamieson, Martha Lucía Ospina Martínez, Suzanne M Gilboa
BACKGROUND: Colombia experienced a Zika virus (ZIKV) outbreak in 2015-2016. To assist with planning for medical and supportive services for infants affected by prenatal ZIKV infection, we used a model to estimate the number of pregnant women infected with ZIKV and the number of infants with congenital microcephaly from August 2015- August 2017. METHODS: We used nationally-reported cases of symptomatic ZIKV disease among pregnant women and information from the literature on the percent of asymptomatic infections to estimate the number of pregnant women with ZIKV infection occurring August 2015 - December 2016...
April 5, 2018: Journal of Infection
https://www.readbyqxmd.com/read/29623138/clinical-serological-and-molecular-observations-from-a-case-series-study-during-the-asian-lineage-zika-virus-outbreak-in-grenada-during-2016
#3
Marco Brenciaglia, Trevor P Noël, Paul J Fields, Satesh Bidaisee, Todd E Myers, William M Nelson, Neeraja Venkateswaran, Kodumudi Venkateswaran, Nishanth Parameswaran, Avi Bahadoor, Katherine Yearwood, Veronica Mapp-Alexander, George Mitchell, A Desiree LaBeaud, Calum N L Macpherson
This paper describes the spatial and temporal distribution of cases, demographic characteristics of patients, and clinical manifestations of Zika virus (ZIKV) during the 2016 outbreak in Grenada. The first reported case was recorded in St. Andrew Parish in April, and the last reported case was seen in November, with peak transmission occurring in the last week of June, based on test results. Data were collected from a total of 514 patients, of whom 207 (40%) tested positive for ZIKV. No evidence was found that testing positive for ZIKV infection was related to age, gender, or pregnancy status...
2018: Canadian Journal of Infectious Diseases & Medical Microbiology
https://www.readbyqxmd.com/read/29606355/fetal-neuropathology-in-zika-virus-infected-pregnant-female-rhesus-monkeys
#4
Amanda J Martinot, Peter Abbink, Onur Afacan, Anna K Prohl, Roderick Bronson, Jonathan L Hecht, Erica N Borducchi, Rafael A Larocca, Rebecca L Peterson, William Rinaldi, Melissa Ferguson, Peter J Didier, Deborah Weiss, Mark G Lewis, Rafael A De La Barrera, Edward Yang, Simon K Warfield, Dan H Barouch
The development of interventions to prevent congenital Zika syndrome (CZS) has been limited by the lack of an established nonhuman primate model. Here we show that infection of female rhesus monkeys early in pregnancy with Zika virus (ZIKV) recapitulates many features of CZS in humans. We infected 9 pregnant monkeys with ZIKV, 6 early in pregnancy (weeks 6-7 of gestation) and 3 later in pregnancy (weeks 12-14 of gestation), and compared findings with uninfected controls. 100% (6 of 6) of monkeys infected early in pregnancy exhibited prolonged maternal viremia and fetal neuropathology, including fetal loss, smaller brain size, and histopathologic brain lesions, including microcalcifications, hemorrhage, necrosis, vasculitis, gliosis, and apoptosis of neuroprogenitor cells...
March 28, 2018: Cell
https://www.readbyqxmd.com/read/29590202/molecularly-barcoded-zika-virus-libraries-to-probe-in-vivo-evolutionary-dynamics
#5
Matthew T Aliota, Dawn M Dudley, Christina M Newman, James Weger-Lucarelli, Laurel M Stewart, Michelle R Koenig, Meghan E Breitbach, Andrea M Weiler, Matthew R Semler, Gabrielle L Barry, Katie R Zarbock, Amelia K Haj, Ryan V Moriarty, Mariel S Mohns, Emma L Mohr, Vanessa Venturi, Nancy Schultz-Darken, Eric Peterson, Wendy Newton, Michele L Schotzko, Heather A Simmons, Andres Mejia, Jennifer M Hayes, Saverio Capuano, Miles P Davenport, Thomas C Friedrich, Gregory D Ebel, Shelby L O'Connor, David H O'Connor
Defining the complex dynamics of Zika virus (ZIKV) infection in pregnancy and during transmission between vertebrate hosts and mosquito vectors is critical for a thorough understanding of viral transmission, pathogenesis, immune evasion, and potential reservoir establishment. Within-host viral diversity in ZIKV infection is low, which makes it difficult to evaluate infection dynamics. To overcome this biological hurdle, we constructed a molecularly barcoded ZIKV. This virus stock consists of a "synthetic swarm" whose members are genetically identical except for a run of eight consecutive degenerate codons, which creates approximately 64,000 theoretical nucleotide combinations that all encode the same amino acids...
March 28, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29579059/cardiac-findings-in-infants-with-in-utero-exposure-to-zika-virus-a-cross-sectional-study
#6
Dulce H G Orofino, Sonia R L Passos, Raquel V C de Oliveira, Carla Verona B de Farias, Maria de Fatima M P Leite, Sheila M Pone, Marcos V da S Pone, Helena A R Teixeira Mendes, Maria Elizabeth L Moreira, Karin Nielsen-Saines
BACKGROUND: Antenatal exposure to Zika virus (ZIKV) is related to severe neurological manifestations. A previous study in Brazil reported an increased incidence of non-severe congenital heart defects in infants with diagnosis of congenital Zika syndrome but without laboratory confirmation of ZIKV infection in the mother or infant. The objective of this study is to report echocardiographic (ECHO) findings in infants with laboratory confirmed antenatal exposure to ZIKV. METHODOLOGY: Cross sectional study of cardiologic assessments of infants born between November 2015 and January 2017 with confirmed vertical exposure to ZIKV in Rio de Janeiro, Brazil...
March 26, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29561936/microcephaly-caused-by-congenital-zika-virus-infection-and-viral-detection-in-maternal-urine-during-pregnancy
#7
Vanessa Couras Regadas, Márcio de Castro E Silva, Lucas Giansante Abud, Luiz Mario Pereira Lopes Labadessa, Rafael Gouvêa Gomes de Oliveira, Cecília Hissae Miyake, Rodolfo Mendes Queiroz
Currently Latin America is undergoing a major epidemic of Zika virus, which is transmitted by Aedes mosquitoes. Concern for Zika virus infection has been increasing as it is suspected of causing brain defects in newborns such as microcephaly and, more recently, potential neurological and autoimmune complications including Guillian-Barré syndrome and acute disseminated encephalomyelitis. We describe a case of virus infection in a 25-year-old woman during the first trimester of her pregnancy, confirmed by laboratory tests only for the detection of viral particles in maternal urine, with imaging studies demonstrating the progression of cranial and encephalic changes in the fetus and later in the newborn, such as head circumference reduction, cerebral calcifications and ventriculomegaly...
January 2018: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/29557985/isolation-of-infectious-zika-virus-from-a-urine-sample-cultured-in-sirc-cells-from-a-patient-suspected-of-having-rubella-virus
#8
Maria Isabel de Oliveira, Gislene Mitsue Namiyama, Gabriela Bastos Cabral, João Leandro Ferreira, Noemi Taniwaki, Ana Maria Sardinha Afonso, Isabella Rillo Lima, Luís Fernando Macedo de Brigido
A great variety of viruses which cause exanthema share other clinical manifestations, making the etiologic identification a very difficult task, relying exclusively on the clinical examination. Rubella virus (RV) infection during the early stages of pregnancy can lead to serious birth defects, known as congenital rubella syndrome (CRS). In the present report, we described the presence of Zika virus (ZIKV) particles in urine samples and also ZIKV isolation in SIRC cells from the urine of a patient in acute phase of suspected rubella disease...
2018: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/29553331/two-infants-with-presumed-congenital-zika-syndrome-brownsville-texas-usa-2016-2017
#9
Ashley Howard, John Visintine, Jaime Fergie, Miguel Deleon
Since 2007, Zika virus has spread through the Pacific Islands and the Americas. Beginning in 2016, women in Brownsville, Texas, USA, were identified as possibly being exposed to Zika virus during pregnancy. We identified 18 pregnant women during 2016-2017 who had supportive serologic or molecular test results indicating Zika virus or flavivirus infection. Two infants were evaluated for congenital Zika syndrome after identification of prenatal microcephaly. Despite standard of care testing of mothers and neonates, comparative results were unreliable for mothers and infants, which highlights the need for clinical and epidemiologic evidence for an accurate diagnosis...
April 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29539287/pregnancy-outcomes-after-zikv-infection-in-french-territories-in-the-americas
#10
Bruno Hoen, Bruno Schaub, Anna L Funk, Vanessa Ardillon, Manon Boullard, André Cabié, Caroline Callier, Gabriel Carles, Sylvie Cassadou, Raymond Césaire, Maylis Douine, Cécile Herrmann-Storck, Philippe Kadhel, Cédric Laouénan, Yoann Madec, Alice Monthieux, Mathieu Nacher, Fatiha Najioullah, Dominique Rousset, Catherine Ryan, Kinda Schepers, Sofia Stegmann-Planchard, Benoît Tressières, Jean-Luc Voluménie, Samson Yassinguezo, Eustase Janky, Arnaud Fontanet
BACKGROUND: The risk of congenital neurologic defects related to Zika virus (ZIKV) infection has ranged from 6 to 42% in various reports. The aim of this study was to estimate this risk among pregnant women with symptomatic ZIKV infection in French territories in the Americas. METHODS: From March 2016 through November 2016, we enrolled in this prospective cohort study pregnant women with symptomatic ZIKV infection that was confirmed by polymerase-chain-reaction (PCR) assay...
March 15, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29523447/adverse-outcomes-of-pregnancy-associated-zika-virus-infection
#11
REVIEW
William J Britt
The spread of Zika virus to the Americas was accompanied by surge in the number of infants with CNS abnormalities leading to a declaration of a health emergency by the WHO. This was accompanied by significant responses from governmental health agencies in the United States and Europe that resulted in significant new information described in the natural history of this perinatal infection in a very short period of time. Although much has been learned about Zika virus infection during pregnancy, limitations of current diagnostics and the challenges for accurate serologic diagnosis of acute Zika virus infection has restricted our understanding of the natural history of this perinatal infection to infants born to women with clinical disease during pregnancy and to Zika exposed infants with obvious clinical stigmata of disease...
March 6, 2018: Seminars in Perinatology
https://www.readbyqxmd.com/read/29518067/update-noncongenital-zika-virus-disease-cases-50-u-s-states-and-the-district-of-columbia-2016
#12
Victoria Hall, William L Walker, Nicole P Lindsey, Jennifer A Lehman, Jonathan Kolsin, Kimberly Landry, Ingrid B Rabe, Susan L Hills, Marc Fischer, J Erin Staples, Carolyn V Gould, Stacey W Martin
Zika virus is a flavivirus primarily transmitted to humans by Aedes aegypti mosquitoes (1). Zika virus infections also have been documented through intrauterine transmission resulting in congenital infection; intrapartum transmission from a viremic mother to her newborn; sexual transmission; blood transfusion; and laboratory exposure (1-3). Most Zika virus infections are asymptomatic or result in mild clinical illness, characterized by acute onset of fever, maculopapular rash, arthralgia, or nonpurulent conjunctivitis; Guillain-Barré syndrome, meningoencephalitis, and severe thrombocytopenia rarely have been associated with Zika virus infection (1)...
March 9, 2018: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/29497153/cns-infections-hidden-consequences-of-zika-virus-infection-in-pregnancy
#13
Ian Fyfe
No abstract text is available yet for this article.
March 2, 2018: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/29495257/a-fluorescent-cell-based-system-for-imaging-zika-virus-infection-in-real-time
#14
Michael J McFadden, Aaron Mitchell-Dick, Christine Vazquez, Allison E Roder, Kevin F Labagnara, John J McMahon, Debra L Silver, Stacy M Horner
Zika virus (ZIKV) is a re-emerging flavivirus that is transmitted to humans through the bite of an infected mosquito or through sexual contact with an infected partner. ZIKV infection during pregnancy has been associated with numerous fetal abnormalities, including prenatal lethality and microcephaly. However, until recent outbreaks in the Americas, ZIKV has been relatively understudied, and therefore the biology and pathogenesis of ZIKV infection remain incompletely understood. Better methods to study ZIKV infection in live cells could enhance our understanding of the biology of ZIKV and the mechanisms by which ZIKV contributes to fetal abnormalities...
February 24, 2018: Viruses
https://www.readbyqxmd.com/read/29480900/zika-virus-what-does-a-physician-caring-for-children-in-canada-need-to-know
#15
Joan L Robinson
Zika virus (ZIKV) was recently recognized to be teratogenic. The diagnosis of congenital ZIKV syndrome should be considered in children with unexplained microcephaly, intracranial calcifications, ventriculomegaly or major structural central nervous system abnormalities. Management is evolving but suggestions are provided for children with findings compatible with congenital infection and for those born to women with potential exposure during pregnancy.
March 2017: Paediatrics & Child Health
https://www.readbyqxmd.com/read/29445153/development-of-a-chimeric-zika-vaccine-using-a-licensed-live-attenuated-flavivirus-vaccine-as-backbone
#16
Xiao-Feng Li, Hao-Long Dong, Hong-Jiang Wang, Xing-Yao Huang, Ye-Feng Qiu, Xue Ji, Qing Ye, Chunfeng Li, Yang Liu, Yong-Qiang Deng, Tao Jiang, Gong Cheng, Fu-Chun Zhang, Andrew D Davidson, Ya-Jun Song, Pei-Yong Shi, Cheng-Feng Qin
The global spread of Zika virus (ZIKV) and its unexpected association with congenital defects necessitates the rapid development of a safe and effective vaccine. Here we report the development and characterization of a recombinant chimeric ZIKV vaccine candidate (termed ChinZIKV) that expresses the prM-E proteins of ZIKV using the licensed Japanese encephalitis live-attenuated vaccine SA14-14-2 as the genetic backbone. ChinZIKV retains its replication activity and genetic stability in vitro, while exhibiting an attenuation phenotype in multiple animal models...
February 14, 2018: Nature Communications
https://www.readbyqxmd.com/read/29437048/development-of-infants-with-congenital-zika-syndrome-what-do-we-know-and-what-can-we-expect
#17
Anne C Wheeler
The association between Zika virus infection during pregnancy and severe birth defects in infants has led to worldwide attention focused on the mechanisms of the disease and the prevention of future exposure. Surveillance efforts around the world continue with the goal of identifying and monitoring all potentially exposed women and their newborns. For infants who were born with congenital Zika syndrome (CZS) and their families, an uncertain future awaits. As infants who were born with CZS during the most recent outbreak enter their second year of life, new developments in the outcomes of the condition continue to unfold, providing some insight into the likely long-term sequalae...
February 2018: Pediatrics
https://www.readbyqxmd.com/read/29435496/zika-virus-alters-dna-methylation-of-neural-genes-in-an-organoid-model-of-the-developing-human-brain
#18
Sylvie Janssens, Michael Schotsaert, Rahul Karnik, Vinod Balasubramaniam, Marion Dejosez, Alexander Meissner, Adolfo García-Sastre, Thomas P Zwaka
Zika virus (ZIKV) infection during early pregnancy can cause microcephaly and associated defects at birth, but whether it can induce neurologic sequelae that appear later in life remains unclear. Using a model of the developing brain based on embryonic stem cell-derived brain organoids, we studied the impact of ZIKV infection on the DNA methylation pattern across the entire genome in selected neural cell types. The virus unexpectedly alters the DNA methylome of neural progenitors, astrocytes, and differentiated neurons at genes that have been implicated in the pathogenesis of a number of brain disorders, most prominently mental retardation and schizophrenia...
January 2018: MSystems
https://www.readbyqxmd.com/read/29428987/scope-of-knowledge-about-zika-among-women-in-us-mexico-border-communities
#19
Jill A McDonald, Katherine Selchau, Bridget Acquah-Baidoo
Maternal Zika virus infection (ZIKV) has serious health consequences for unborn offspring. Knowledge about prevention is critical to reducing risk, yet what women in the high-risk US-Mexico border region know about protecting themselves and their babies from ZIKV is mostly unknown. This study aimed to assess knowledge of ZIKV among pregnant and inter-conception women and to identify sources of information that might address knowledge gaps. Clients in five federally-funded, border region Healthy Start programs (N = 326) were interviewed in late 2016 about their knowledge of ZIKV prevention methods and whether they believed themselves or their babies to be at risk...
February 10, 2018: Journal of Community Health
https://www.readbyqxmd.com/read/29421625/microglia-the-missing-link-in-maternal-immune-activation-and-fetal-neurodevelopment-and-a-possible-link-in-preeclampsia-and-disturbed-neurodevelopment
#20
Jelmer R Prins, Sharon Eskandar, Bart J L Eggen, Sicco A Scherjon
Disturbances in fetal neurodevelopment have extensively been related to neurodevelopmental disorders in early and later life. Fetal neurodevelopment is dependent on adequate functioning of the fetal immune system. During pregnancy, the maternal immune system is challenged to both tolerate the semi-allogenic fetus and to protect the mother and fetus from microbes. The fetal immune system is influenced by maternal immune disturbances; therefore, perturbations in maternal immunity likely do not only alter pregnancy outcome but also alter fetal neurodevelopment...
January 31, 2018: Journal of Reproductive Immunology
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