Publicações relacionadas à zika
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In:
Neglected Tropical Diseases
Authors:
Robert W. Malone, Jane Homan, Michael V. Callahan, Jill Glasspool-Malone, Lambodhar Damodaran, Adriano De Bernardi Schneider, Rebecca Zimler, James Talton, Ronald R. Cobb, Ivan Ruzic, Julie Smith-Gagen, Daniel Janies, James Wilson, Zika Response Working Group
Abstract
Introduction
Reports of high rates of primary microcephaly and Guillain–Barré syndrome associated with Zika virus infection in French Polynesia and Brazil have raised concerns that the virus circulating in these regions is a rapidly developing neuropathic, teratogenic, emerging infec- tious public health threat. There are no licensed medical countermeasures (vaccines, thera- pies or preventive drugs) available for Zika virus infection and disease. The Pan American Health Organization (PAHO) predicts that Zika virus will continue to spread and eventually reach all countries and territories in the Americas with endemic Aedes mosquitoes. This paper reviews the status of the Zika virus outbreak, including medical countermeasure options, with a focus on how the epidemiology, insect vectors, neuropathology, virology and immunology inform options and strategies available for medical countermeasure develop- ment and deployment.
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In:
The New England Journal of Medicine
Authors:
Sonja A. Rasmussen, M.D., Denise J. Jamieson, M.D., M.P.H., Margaret A. Honein, Ph.D., M.P.H., and Lyle R. Petersen, M.D., M.P.H.
The Zika virus has spread rapidly in the Americas since its first identification in Brazil in early 2015. Prenatal Zika virus infection has been linked to adverse pregnancy and birth outcomes, most notably microcephaly and other serious brain anomalies. To determine whether Zika virus infection during pregnancy causes these adverse outcomes, we evaluated available data using criteria that have been proposed for the assessment of potential teratogens. On the basis of this review, we conclude that a causal relationship exists between prenatal Zika virus infection and microcephaly and other serious brain anomalies. Evidence that was used to support this causal relationship included Zika virus infection at times during prenatal development that were consistent with the defects observed; a specific, rare phenotype involving microcephaly and associated brain anomalies in fetuses or infants with presumed or confirmed congenital Zika virus infection; and data that strongly support biologic plausibility, including the identification of Zika virus in the brain tissue of affected fetuses and infants. Given the recognition of this causal relationship, we need to intensify our efforts toward the prevention of adverse outcomes caused by
congenital Zika virus infection.
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In:
Centers for Disease Control and Prevention
Author:
D. Trew Deckard, PA-C; Wendy M. Chung, MD; John T. Brooks, MD; Jessica C. Smith, MPH; Senait Woldai, MPH; Morgan Hennessey, DVM; Natalie Kwit, DVM; Paul Mead, MD
Zika virus infection has been linked to increased risk for Guillain-Barré syndrome and adverse fetal outcomes, including congenital microcephaly. In January 2016, after notification from a local health care provider, an investigation by Dallas County Health and Human Services (DCHHS) identified a case of sexual transmission of Zika virus between a man with recent travel to an area of active Zika virus transmission (patient A) and his nontraveling male partner (patient B). At this time, there had been one prior case report of sexual transmission of Zika virus (1). The present case report indicates Zika virus can be transmitted through anal sex, as well as vaginal sex. Identification and investigation of cases of sexual transmission of Zika virus in nonendemic areas present valuable opportunities to inform recommendations to prevent sexual transmission of Zika virus.
Read more: http://www.cdc.gov/mmwr/volumes/65/wr/mm6514a3.htm?s_cid=mm6514a3_w
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In:
Springer Nature
Experts, selected primarily from our pool of authors, have written overviews that provide useful information to students, researchers, health care professionals and other scientifically minded individuals. Coming from a broad spectrum of disciplines, these experts write about how their particular field is involved in the scientific investigations to contain the virus and care for patients. Each overview offers a selection of freely available content as chosen by the author.
Further content will be posted as it becomes available.
Read more: http://www.springernature.com/gp/group/zika-virus/experts-commentaries
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In:
Science Magazine
Authors:
Patricia P. Garcez, Erick Correia Loiola, Rodrigo Madeiro da Costa, Luiza M. Higa, Pablo Trindade, Rodrigo Delvecchio, Juliana Minardi Nascimento, Rodrigo Brindeiro, Amilcar Tanuri, Stevens K. Rehen
Since the emergence of Zika virus (ZIKV), reports of microcephaly have increased significantly in Brazil; however, causality between the viral epidemic and malformations in fetal brains needs further confirmation. Here, we examine the effects of ZIKV infection in human neural stem cells growing as neurospheres and brain organoids. Using immunocytochemistry and electron microscopy, we show that ZIKV targets human brain cells, reducing their viability and growth as neurospheres and brain organoids. These results suggest that ZIKV abrogates neurogenesis during human brain development.
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