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https://www.readbyqxmd.com/read/29138300/high-zika-virus-seroprevalence-in-salvador-northeastern-brazil-limits-the-potential-for-further-outbreaks
#1
Eduardo Martins Netto, Andres Moreira-Soto, Celia Pedroso, Christoph Höser, Sebastian Funk, Adam J Kucharski, Alexandra Rockstroh, Beate M Kümmerer, Gilmara Souza Sampaio, Estela Luz, Sara Nunes Vaz, Juarez Pereira Dias, Fernanda Anjos Bastos, Renata Cabral, Thomas Kistemann, Sebastian Ulbert, Xavier de Lamballerie, Thomas Jaenisch, Oliver J Brady, Christian Drosten, Manoel Sarno, Carlos Brites, Jan Felix Drexler
During 2015 to 2016, Brazil reported more Zika virus (ZIKV) cases than any other country, yet population exposure remains unknown. Serological studies of ZIKV are hampered by cross-reactive immune responses against heterologous viruses. We conducted serosurveys for ZIKV, dengue virus (DENV), and Chikungunya virus (CHIKV) in 633 individuals prospectively sampled during 2015 to 2016, including microcephaly and non-microcephaly pregnancies, HIV-infected patients, tuberculosis patients, and university staff in Salvador in northeastern Brazil using enzyme-linked immunosorbent assays (ELISAs) and plaque reduction neutralization tests...
November 14, 2017: MBio
https://www.readbyqxmd.com/read/29133154/adverse-birth-outcomes-associated-with-zika-virus-exposure-during-pregnancy-in-s%C3%A3-o-jos%C3%A3-do-rio-preto-brazil
#2
Mauricio Lacerda Nogueira, Nivison Ruy Rocha Nery Júnior, Cássia Fernanda Estofolete, Ana Carolina Bernardes Terzian, Georgia de Freitas Guimarães, Nathalia Zini, Rafael Alves da Silva, Gislaine Celestino Dutra Silva, Ligia Cosentino Junqueira Franco, Paula Rahal, Cintia Bittar, Bruno Carneiro, Pedro Fernando Vasconcelos da Costa, Daniele Freitas Henriques, Deusenia Machado Ulisses Barbosa, Patrícia Lopes Rombola, Luciana de Grande, Andréia Francesli Negri Reis, Sacha Ariane Palomares, Marcia Wakai Catelan, Lilian Elisa Arão Antonio Cruz, Silvia Helena Necchi, Rita de Cassia Vilella Mendonça, Izalco Nuremberg Penha Dos Santos, Suzimeiri Brigatti Alavarse Caron, Federico Costa, Fernando A Bozza, Antonio Soares de Souza, Cinara Cássia Brandão de Mattos, Luiz Carlos de Mattos, Nikos Vasilakis, Antonio Helio Oliani, Denise Cristina Mós Vaz Oliani, Albert Icksang Ko
OBJECTIVE: We aimed to report the first 54 cases of pregnant women infected by Zika vírus (ZIKV) and their virological and clinical outcomes, as well as the newborns' outcomes in 2016, after the emergence of ZIKV in dengue endemic areas of São Paulo, Brazil. METHODS: This is a descriptive study performed from February to October 2016 on 54 qPCR ZIKV-positive pregnant women identified by the Public Health Authority of São Jose do Rio Preto, São Paulo, Brazil...
November 10, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29112671/travel-characteristics-and-pretravel-health-care-among-pregnant-or-breastfeeding-u-s-women-preparing-for-international-travel
#3
Stefan H F Hagmann, Sowmya R Rao, Regina C LaRocque, Stefanie Erskine, Emily S Jentes, Allison T Walker, Elizabeth D Barnett, Lin H Chen, Davidson H Hamer, Edward T Ryan
OBJECTIVE: To study characteristics and preventive interventions of adult pregnant and breastfeeding travelers seeking pretravel health care in the United States. METHODS: This cross-sectional study analyzed data (2009-2014) of pregnant and breastfeeding travelers seen at U.S. travel clinics participating in Global TravEpiNet. Nonpregnant, nonbreastfeeding adult female travelers of childbearing age were used for comparison. We evaluated the prescription of malaria chemoprophylaxis and antibiotics for this population as well as the administration of three travel-related vaccines: hepatitis A, typhoid, and yellow fever...
November 3, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29081814/roles-of-interferons-in-pregnant-women-with-dengue-infection-protective-or-dangerous-factors
#4
REVIEW
Hao Zhang, Zhiyi He, Wenting Zeng, Hong-Juan Peng
Dengue infection is a serious public health problem in tropical and subtropical areas. With the recent outbreaks of Zika disease and its reported correlation with microcephaly, the large number of pregnancies with dengue infection has become a serious concern. This review describes the epidemiological characteristics of pregnancy with dengue and the initial immune response to dengue infection, especially in IFNs production in this group of patients. Dengue is much more prevalent in pregnant women compared with other populations...
2017: Canadian Journal of Infectious Diseases & Medical Microbiology
https://www.readbyqxmd.com/read/29026637/a-review-of-selected-arboviruses-during-pregnancy
#5
REVIEW
Penélope Saldanha Marinho, Antonio José Cunha, Joffre Amim Junior, Arnaldo Prata-Barbosa
Arboviruses are emerging infectious diseases with the ability to expand geographically and rapidly affect large populations. The recent epidemic caused by the Zika virus in the Americas and congenital Zika syndrome associated with maternal infection has called out attention to the importance of studying arboviruses during pregnancy. This is a review on selected arboviruses infections during gestation, including Zika, Chikungunya, Dengue and Yellow Fever viruses. Issues such as historical overview, pathogenesis, transmission, clinical conditions, diagnosis, treatment and prevention are addressed...
2017: Maternal Health, Neonatology and Perinatology
https://www.readbyqxmd.com/read/29020159/distinguishing-secondary-dengue-virus-infection-from-zika-virus-infection-with-previous-dengue-by-a-combination-of-three-simple-serological-tests
#6
Wen-Yang Tsai, Han Ha Youn, Carlos Brites, Jih-Jin Tsai, Jasmine Tyson, Celia Pedroso, Jan Felix Drexler, Mars Stone, Graham Simmons, Michael P Busch, Marion Lanteri, Susan L Stramer, Angel Balmaseda, Eva Harris, Wei-Kung Wang
Background: The explosive spread of Zika virus (ZIKV) and associated microcephaly present an urgent need for sensitive and specific serodiagnostic tests, particularly for pregnant women in dengue virus (DENV)-endemic regions. Recent reports of enhanced ZIKV replication by dengue-immune sera have raised concerns about the role of previous DENV infection on the risk and severity of microcephaly and other ZIKV complications. Methods: Enzyme-linked immunosorbent assays (ELISAs) based on ZIKV and DENV non-structural protein 1 (NS1) were established to test acute, convalescent-phase and post-convalescent-phase serum/plasma samples from reverse-transcription polymerase-chain reaction-confirmed-cases including 20 primary ZIKV, 25 ZIKV with previous dengue, 58 secondary DENV, and 16 primary DENV1 infections...
July 29, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28977169/dengue-in-pregnant-women-characterization-of-cases-in-brazil-2007-2015
#7
Laura Branquinho do Nascimento, Cláudio Morais Siqueira, Giovanini Evelim Coelho, João Bosco Siqueira
OBJECTIVE: to characterize the probable cases of dengue in pregnant women reported in Brazil, from 2007 to 2015. METHODS: descriptive study of sociodemographic, epidemiological, clinical and laboratory characteristics, with data from the Information System for Notifiable Diseases (Sinan). RESULTS: the annual incidence of dengue in pregnant women ranged from 3.3 (2009) to 816.6 (2010) cases per 100 thousand live births; of the 43,772 probable cases of dengue in pregnant women, 81...
July 2017: Epidemiologia e Servicos de Saude: Revista do Sistema Unico de Saude do Brasil
https://www.readbyqxmd.com/read/28954927/rapid-antigen-tests-for-dengue-virus-serotypes-and-zika-virus-in-patient-serum
#8
Irene Bosch, Helena de Puig, Megan Hiley, Marc Carré-Camps, Federico Perdomo-Celis, Carlos F Narváez, Doris M Salgado, Dewahar Senthoor, Madeline O'Grady, Elizabeth Phillips, Ann Durbin, Diana Fandos, Hikaru Miyazaki, Chun-Wan Yen, Margarita Gélvez-Ramírez, Rajas V Warke, Lucas S Ribeiro, Mauro M Teixeira, Roque P Almeida, José E Muñóz-Medina, Juan E Ludert, Mauricio L Nogueira, Tatiana E Colombo, Ana C B Terzian, Patricia T Bozza, Andrea S Calheiros, Yasmine R Vieira, Giselle Barbosa-Lima, Alexandre Vizzoni, José Cerbino-Neto, Fernando A Bozza, Thiago M L Souza, Monique R O Trugilho, Ana M B de Filippis, Patricia C de Sequeira, Ernesto T A Marques, Tereza Magalhaes, Francisco J Díaz, Berta N Restrepo, Katerine Marín, Salim Mattar, Daniel Olson, Edwin J Asturias, Mark Lucera, Mohit Singla, Guruprasad R Medigeshi, Norma de Bosch, Justina Tam, Jose Gómez-Márquez, Charles Clavet, Luis Villar, Kimberly Hamad-Schifferli, Lee Gehrke
The recent Zika virus (ZIKV) outbreak demonstrates that cost-effective clinical diagnostics are urgently needed to detect and distinguish viral infections to improve patient care. Unlike dengue virus (DENV), ZIKV infections during pregnancy correlate with severe birth defects, including microcephaly and neurological disorders. Because ZIKV and DENV are related flaviviruses, their homologous proteins and nucleic acids can cause cross-reactions and false-positive results in molecular, antigenic, and serologic diagnostics...
September 27, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28945787/rapid-colorimetric-detection-of-zika-virus-from-serum-and-urine-specimens-by-reverse-transcription-loop-mediated-isothermal-amplification-rt-lamp
#9
Amanda E Calvert, Brad J Biggerstaff, Nathan A Tanner, Molly Lauterbach, Robert S Lanciotti
Zika virus (ZIKV) has emerged as a major global public health concern in the last two years due to its link as a causative agent of human birth defects. Its rapid expansion into the Western Hemisphere as well as the ability to be transmitted from mother to fetus, through sexual transmission and possibly through blood transfusions has increased the need for a rapid and expansive public health response to this unprecedented epidemic. A non-invasive and rapid ZIKV diagnostic screening assay that can be performed in a clinical setting throughout pregnancy is vital for prenatal care of women living in areas of the world where exposure to the virus is possible...
2017: PloS One
https://www.readbyqxmd.com/read/28877754/association-between-suspected-zika-virus-disease-during-pregnancy-and-giving-birth-to-a-newborn-with-congenital-microcephaly-a-matched-case-control-study
#10
Ticiane Henriques Santa Rita, Renata Barcelos Barra, Gisele Pasquali Peixoto, Pedro Goes Mesquita, Gustavo Barcelos Barra
OBJECTIVE: In early 2015, an outbreak of an acute exanthematous illness with dengue-like symptoms occurred in northeastern Brazil. By the end of the same year, an unexpected increase in the number of cases of microcephaly was observed in the region. The microcephaly outbreak cause was unknown and rumors pointing to various potential causes arose. Since we were unaware at the time if this scenario would attract the interest of the broader scientific community, due to the neglected regions associated and as often happens with many others health conditions related to infectious diseases in Latin America...
September 6, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28845800/symptomatic-dengue-infection-during-pregnancy-and-the-risk-of-stillbirth-in-brazil-2006-12-a-matched-case-control-study
#11
Enny S Paixão, Maria da Conceição N Costa, Maria Glória Teixeira, Katie Harron, Marcia Furquim de Almeida, Mauricio L Barreto, Laura C Rodrigues
BACKGROUND: Maternal infections during pregnancy can increase the risk of fetal death. Dengue infection is common, but little is known about its role in fetal mortality. We aimed to investigate the association between symptomatic dengue infection during pregnancy and fetal death. METHODS: We did a nested case-control study using obstetrician-collected data from the Brazilian livebirth information system (SINASC), the mortality information system (SIM), and the national reportable disease information system (SINAN)...
September 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28835931/t-cell-responses-in-individuals-infected-with-zika-virus-and-in-those-vaccinated-against-dengue-virus
#12
Dominic Paquin-Proulx, Fabio E Leal, Cassia G Terrassani Silveira, Alvino Maestri, Claudia Brockmeyer, Shannon M Kitchen, Vinicius D Cabido, Esper G Kallas, Douglas F Nixon
BACKGROUND: The outbreak of Zika virus (ZIKV) infection in Brazil has raised concerns that infection during pregnancy could cause microcephaly and other severe neurodevelopmental malformations in the fetus. The mechanisms by which ZIKV causes fetal abnormalities are largely unknown. The importance of pre-infection with dengue virus (DENV), or other flaviviruses endemic to Brazil, remains to be investigated. It has been reported that antibodies directed against DENV can increase ZIKV infectivity by antibody dependent enhancement (ADE), suggesting that a history of prior DENV infection might worsen the outcome of ZIKV infection...
2017: Pathogens & Immunity
https://www.readbyqxmd.com/read/28798738/zika-virus-an-emerging-worldwide-threat
#13
Irfan A Rather, Jameel B Lone, Vivek K Bajpai, Woon K Paek, Jeongheui Lim
ZIKA virus (ZIKV) poses a severe threat to the world. Recent outbreaks of ZIKV after 2007 along with its quick transmission have made this virus a matter of international concern. The virus shows symptoms that are similar to those caused in the wake of dengue virus (DENV) and other flaviviruses, which makes it difficult to discern the viral infection. Diagnosis is further complicated as the virus cross-reacts with antibodies of other viruses. Currently, molecular diagnosis of the virus is being performed by RT-PCR and IgM-captured enzyme-linked immunosorbent assay (MAC-ELISA)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28758019/current-trends-in-zika-vaccine-development
#14
EDITORIAL
Francisco A Lagunas-Rangel, Martha E Viveros-Sandoval, Arturo Reyes-Sandoval
The Zika virus (ZIKV) was first isolated in 1947 in Uganda. While it took 60 years for this virus to cause major outbreaks, an important shift in its ability to cause epidemics took place in the first and second decades of the this century: in 2007 in Yap Island, Micronesia, followed by French Polynesia in 2013 and, finally in 2015 and 2016, when ZIKV infections occurred throughout South America, Central America and the Caribbean, spreading rapidly to reach North America in just a single year. No licensed prophylactic vaccine is yet available but recent efforts towards the development of a vaccine have been remarkable from both the private and public sectors and include new candidate vaccines ranging from the classical live-attenuated or inactivated vaccines to more sophisticated approaches such as mRNA or genetically engineered viral platforms...
July 1, 2017: Journal of Virus Eradication
https://www.readbyqxmd.com/read/28753531/dengue-virus-infection-during-pregnancy-increased-the-risk-of-adverse-fetal-outcomes-an-updated-meta-analysis
#15
REVIEW
Yi-Quan Xiong, Yun Mo, Ting-Li Shi, Lin Zhu, Qing Chen
OBJECTIVE: To evaluate the effect of maternal dengue virus (DENV) infection during pregnancy in premature birth, low birth weight, miscarriage and stillbirth. METHODS: Systematic electronic literature searches were conducted including PubMed, Medline, Embase, Web of science, Scopus and the Cochrane Library database, up until July 5, 2017. Effect sizes were estimated by using the relative risk (RR) or odds ratio (OR) with theirs corresponding 95% confidence interval (CI)...
September 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28716074/evaluation-of-record-linkage-of-two-large-administrative-databases-in-a-middle-income-country-stillbirths-and-notifications-of-dengue-during-pregnancy-in-brazil
#16
Enny S Paixão, Katie Harron, Kleydson Andrade, Maria Glória Teixeira, Rosemeire L Fiaccone, Maria da Conceição N Costa, Laura C Rodrigues
BACKGROUND: Due to the increasing availability of individual-level information across different electronic datasets, record linkage has become an efficient and important research tool. High quality linkage is essential for producing robust results. The objective of this study was to describe the process of preparing and linking national Brazilian datasets, and to compare the accuracy of different linkage methods for assessing the risk of stillbirth due to dengue in pregnancy. METHODS: We linked mothers and stillbirths in two routinely collected datasets from Brazil for 2009-2010: for dengue in pregnancy, notifications of infectious diseases (SINAN); for stillbirths, mortality (SIM)...
July 17, 2017: BMC Medical Informatics and Decision Making
https://www.readbyqxmd.com/read/28649242/an-approach-for-a-synthetic-ctl-vaccine-design-against-zika-flavivirus-using-class-i-and-class-ii-epitopes-identified-by-computer-modeling
#17
Edecio Cunha-Neto, Daniela S Rosa, Paul E Harris, Tim Olson, Alex Morrow, Serban Ciotlos, Charles V Herst, Reid Martin Rubsamen
The threat posed by severe congenital abnormalities related to Zika virus (ZKV) infection during pregnancy has turned development of a ZKV vaccine into an emergency. Recent work suggests that the cytotoxic T lymphocyte (CTL) response to infection is an important defense mechanism in response to ZKV. Here, we develop the rationale and strategy for a new approach to developing cytotoxic T lymphocyte (CTL) vaccines for ZKV flavivirus infection. The proposed approach is based on recent studies using a protein structure computer model for HIV epitope selection designed to select epitopes for CTL attack optimized for viruses that exhibit antigenic drift...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28647172/infection-related-microcephaly-after-the-2015-and-2016-zika-virus-outbreaks-in-brazil-a-surveillance-based-analysis
#18
Wanderson Kleber de Oliveira, Giovanny Vinícius Araújo de França, Eduardo Hage Carmo, Bruce Bartholow Duncan, Ricardo de Souza Kuchenbecker, Maria Inês Schmidt
BACKGROUND: On Nov 11, 2015, the Brazilian Ministry of Health declared a Public Health Emergency of National Concern in response to an increased number of microcephaly cases, possibly related to previous Zika virus outbreaks. We describe the course of the dual epidemics of the Zika virus infection during pregnancy and microcephaly in Brazil up to Nov 12, 2016, the first anniversary of this declaration. METHODS: We used secondary data for Zika virus and microcephaly cases obtained through the Brazilian Ministry of Health's surveillance systems from Jan 1, 2015, to Nov 12, 2016...
August 26, 2017: Lancet
https://www.readbyqxmd.com/read/28644549/a-retrospective-analysis-of-the-symptoms-and-course-of-dengue-infection-during-pregnancy
#19
Kavita Agarwal, Sunita Malik, Pratima Mittal
OBJECTIVE: To assess outcomes among pregnant women diagnosed with dengue infection. METHODS: In a retrospective study, the medical records of all pregnant women with dengue infection admitted to Safdarjung Hospital, New Delhi, India, from July to December 2015 were reviewed. Maternal and fetal outcomes were compared by pregnancy length and stage of disease at diagnosis. RESULTS: Overall, 62 pregnant women with dengue infection were identified...
October 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28614453/dengue-infection-during-pregnancy-and-adverse-maternal-fetal-and-infant-health-outcomes-in-rio-branco-acre-state-brazil-2007-2012
#20
Helena Albuquerque Catão Feitoza, Sergio Koifman, Rosalina Jorge Koifman, Valéria Saraceni
The effects of dengue infection during pregnancy have not been previously studied in Rio Branco, Acre State, Brazil. The aim of this study was to determine the risks of maternal, fetal, and infant complications resulting from dengue infection during pregnancy. The study compared two cohorts of pregnant women, exposed versus unexposed to dengue virus, from 2007 to 2012. Incidence rates and risk ratios were estimated for maternal, fetal, and infant complications. In the exposed cohort there were 3 fetal deaths and 5 neonatal deaths...
June 12, 2017: Cadernos de Saúde Pública
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