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dengue and pregnancy

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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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)...
July 19, 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
#7
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
#8
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
#9
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...
June 21, 2017: Lancet
https://www.readbyqxmd.com/read/28644549/a-retrospective-analysis-of-the-symptoms-and-course-of-dengue-infection-during-pregnancy
#10
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...
June 23, 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
#11
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
https://www.readbyqxmd.com/read/28575919/zika-virus-infection-in-pregnant-women-and-microcephaly
#12
Geraldo Duarte, Antonio Fernandes Moron, Artur Timerman, César Eduardo Fernandes, Corintio Mariani Neto, Gutemberg Leão de Almeida Filho, Heron Werner Junior, Hilka Flavia Barra do Espírito Santo, João Alfredo Piffero Steibel, João Bortoletti Filho, Juvenal Barreto Borriello de Andrade, Marcelo Burlá, Marcos Felipe Silva de Sá, Newton Eduardo Busso, Paulo César Giraldo, Renato Augusto Moreira de Sá, Renato Passini Junior, Rosiane Mattar, Rossana Pulcineli Vieira Francisco
From the discovery of the Zika virus (ZIKV) in 1947 in Uganda (Africa), until its arrival in South America, it was not known that it would affect human reproductive life so severely. Today, damage to the central nervous system is known to be multiple, and microcephaly is considered the tip of the iceberg. Microcephaly actually represents the epilogue of this infection's devastating process on the central nervous system of embryos and fetuses. As a result of central nervous system aggression by the ZIKV, this infection brings the possibility of arthrogryposis, dysphagia, deafness and visual impairment...
May 2017: Revista Brasileira de Ginecologia e Obstetrícia
https://www.readbyqxmd.com/read/28535184/maternal-zika-virus-disease-severity-virus-load-prior-dengue-antibodies-and-their-relationship-to-birth-outcomes
#13
Umme-Aiman Halai, Karin Nielsen-Saines, Maria Lopes Moreira, Patricia Carvalho de Sequeira, Jose Paulo Pereira Junior, Andrea de Araujo Zin, James Cherry, Claudia Raja Gabaglia, Stephanie L Gaw, Kristina Adachi, Irena Tsui, Jose Henrique Pilotto, Rita Ribeiro Nogueira, Ana Maria Bispo de Filippis, Patricia Brasil
Background: Congenital Zika virus (ZIKV) syndrome is a newly identified condition resulting from infection during pregnancy. We analyzed outcome data from a mother-infant cohort in Rio de Janeiro in order to assess whether clinical severity of maternal ZIKV infection was associated with maternal virus load, prior dengue antibodies, or abnormal pregnancy/infant outcomes. Methods: A clinical severity assessment tool was developed based on duration of fever, severity of rash, multisystem involvement, and duration of symptoms during ZIKV infection...
September 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28528802/symptomatic-dengue-infection-during-pregnancy-and-livebirth-outcomes-in-brazil-2007-13-a-retrospective-observational-cohort-study
#14
Laura B Nascimento, Cláudio M Siqueira, Giovanini E Coelho, João B Siqueira
BACKGROUND: Dengue is a major public health challenge in Brazil. We assessed the relationship between symptomatic dengue infection during pregnancy and adverse birth outcomes in the country between 2007 and 2013. METHODS: We did a retrospective observational cohort study using information reported in the Brazilian national reportable disease information system (SINAN) and the livebirth information system (SINASC) databases. We probabilistically linked confirmed dengue-positive and dengue-negative pregnancies with live childbirths using Fine-Grained Record Integration and Linkage (FRIL) software...
September 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28528801/dengue-infection-during-pregnancy-and-risk-of-preterm-birth
#15
Patrícia Brasil, Otilia Lupi
No abstract text is available yet for this article.
May 18, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28525510/zika-virus-obstetric-and-pediatric-anesthesia-considerations
#16
Jacqueline L Tutiven, Benjamin T Pruden, James S Banks, Mario Stevenson, David J Birnbach
As of November 2016, the Florida Department of Health (FDH) and the Centers for Disease Control and Prevention have confirmed more than 4000 travel-related Zika virus (ZIKV) infections in the United States with >700 of those in Florida. There have been 139 cases of locally acquired infection, all occurring in Miami, Florida. Within the US territories (eg, Puerto Rico, US Virgin Islands), >30,000 cases of ZIKV infection have been reported. The projected number of individuals at risk for ZIKV infection in the Caribbean and Latin America approximates 5 million...
June 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28493351/human-zika-and-west-nile-virus-neurological-infections-what-is-the-difference
#17
REVIEW
Clayton A Wiley, Leila Chimelli
The recent epidemic of West Nile Virus (WNV) infection in the United States was associated with severe neurological disease in immunocompromised hosts, while the emergence of Zika virus infection in the Americas has been notable for an association with increased microcephaly in the fetuses of infected mothers. Rare autopsies of WNV infected humans have shown multiple organ involvement with a clear neurotropism. We have recently had the opportunity to examine the distribution of Zika virus in autopsies of newborns from infected pregnancies...
May 11, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28429036/a-review-of-zika-virus-infections-in-pregnancy-and-implications-for-antenatal-care-in-singapore
#18
Harvard Zhenjia Lin, Paul Anantharajah Tambyah, Eu Leong Yong, Arijit Biswas, Shiao-Yng Chan
Given the consensus that there is a causal relationship between Zika virus (ZIKV) infection in pregnancy and congenital Zika syndrome (CZS), clinicians must be prepared to manage affected patients despite the numerous gaps in current knowledge. The clinical course in pregnancy appears similar to that in non-pregnant women, although viraemia may be prolonged. ZIKV infection can be diagnosed by serum and urine reverse transcription-polymerase chain reaction, but commercially available serological tests are currently unreliable in dengue-endemic regions...
April 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/28393598/-zika-virus-infection-in-pregnancy
#19
Gabriella Varjasi, Róbert Póka
The Zika virus is a flavivirus spread by mosquitoes. Its primary vectors are the Aedes aegypti and the Aedes albopictus. Before 2007 it sporadically caused benign morbidity. Since 2015, it started spreading "explosively" in America, especially in Brazil. In August 2016 they reported cases from New York and Poland, too. Most of the infections don't produce any symptoms, but can cause grave complications. The most important lesion is microcephalia that forms in fetuses. Microcephalia's most serious consequence is mental retardation, which puts great burden on both the family and the society...
April 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28375541/unravelling-the-paediatric-and-perinatal-zika-virus-epidemic-through-population-based-research
#20
Cdc Christie, C Giaquinto
Zika virus epidemic now involves 72 countries, worldwide. Transmission is multimodal through mosquito bites and blood and body fluids. Zika virus causes Guillain Barre Syndrome syndrome and pregnancy complications including perinatal microcephaly. Diagnosis is complicated by subclinical infection in 80%, co-circulation with dengue and chikungunya fevers with similar presentations and cross-reactivity in serological tests. There is no cure, or preventive vaccine. Large population-based studies will help to elucidate ZIKV epidemiology, vertical transmission, risks to the fetus of maternal ZIKV infection and natural history of congenital and non-congenital ZIKV infection as provided by the activities in the "ZIKAction" research consortium in Latin America, Europe and the Caribbean, which was recently funded by the European Commission...
September 19, 2016: West Indian Medical Journal
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