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https://www.readbyqxmd.com/read/27892990/zika-virus-what-the-otolaryngologist-should-know-a-review
#1
Demetri Arnaoutakis, Tapan Padhya
Importance: Initially discovered in 1947, Zika virus infection received little notoriety as a tropical disease until 2015 when an outbreak of microcephaly cases was reported in Brazil. Zika is a single-stranded RNA arbovirus of the Flaviviridae family. The primary source of infection in humans stems from Aedes aegypti mosquito bites but can also occur through sexual, blood, and perinatal transmission. With expectations that 3 to 4 million people across the Americas will be infected over the next year, the World Health Organization has declared this event a Public Health Emergency of International Concern...
November 17, 2016: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/27869600/reemergence-of-st-louis-encephalitis-virus-california-2015
#2
Gregory S White, Kelly Symmes, Pu Sun, Ying Fang, Sandra Garcia, Cody Steiner, Kirk Smith, William K Reisen, Lark L Coffey
St. Louis encephalitis virus infection was detected in summer 2015 in southern California after an 11-year absence, concomitant with an Arizona outbreak. Sequence comparisons showed close identity of California and Arizona isolates with 2005 Argentine isolates, suggesting introduction from South America and underscoring the value of continued arbovirus surveillance.
December 2016: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/27846442/estimate-of-the-reproduction-number-of-the-2015-zika-virus-outbreak-in-barranquilla-colombia-and-estimation-of-the-relative-role-of-sexual-transmission
#3
Sherry Towers, Fred Brauer, Carlos Castillo-Chavez, Andrew K I Falconar, Anuj Mubayi, Claudia M E Romero-Vivas
BACKGROUND: In 2015, the Zika arbovirus (ZIKV) began circulating in the Americas, rapidly expanding its global geographic range in explosive outbreaks. Unusual among mosquito-borne diseases, ZIKV has been shown to also be sexually transmitted, although sustained autochthonous transmission due to sexual transmission alone has not been observed, indicating the reproduction number (R0) for sexual transmission alone is less than 1. Critical to the assessment of outbreak risk, estimation of the potential attack rates, and assessment of control measures, are estimates of the basic reproduction number, R0...
October 17, 2016: Epidemics
https://www.readbyqxmd.com/read/27833670/dengue-zika-and-chikungunya-emerging-arboviruses-in-the-new-world
#4
REVIEW
Jessica Patterson, Maura Sammon, Manish Garg
The arboviruses that cause dengue, chikungunya, and Zika illnesses have rapidly expanded across the globe in recent years, with large-scale outbreaks occurring in Western Hemisphere territories in close proximity to the United States (U.S.). In March 2016, the Centers for Disease Control and Protection (CDC) expanded its vector surveillance maps for A. aegypti and A. albopictus, the mosquito vectors for these arboviruses. They have now been shown to inhabit a larger portion of the U.S., including the heavily populated northeast corridor...
November 2016: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27821697/dengue-and-west-nile-virus-transmission-in-children-and-adults-in-coastal-kenya
#5
David M Vu, Tamara Banda, Crystal Y Teng, Chelsea Heimbaugh, Eric M Muchiri, Peter L Mungai, Francis M Mutuku, Julie Brichard, Ginny Gildengorin, Erin M Borland, Ann M Powers, Uriel Kitron, Charles H King, A Desiree LaBeaud
Dengue virus (DENV) and West Nile virus (WNV) are important reemerging arboviruses that are under-recognized in many parts of Africa due to lack of surveillance. As a part of a study on flavivirus, alphavirus, and parasite exposure in coastal Kenya, we measured neutralizing antibody against DENV and, to evaluate assay specificity, WNV in serum samples that tested positive for serum anti-DENV IgG by enzyme-linked immunosorbent assay. Of 830 anti-DENV IgG-positive samples that were tested for neutralizing activity, 488 (58...
November 7, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27812648/zika-in-pernambuco-rewriting-the-first-outbreak
#6
Carlos Alexandre Antunes de Brito, Cecilia Coelho Moraes de Brito, Augusto César Oliveira, Marilia Rocha, Caio Atanásio, Carolina Asfora, Júlio Dourado Matos, Anton Saraiva Lima, Maria Fátima Militão Albuquerque
INTRODUCTION: A Zika virus epidemic was registered in 2015 in Northeast Brazil. In the State of Pernambuco, thousands of classical cases transpired, and in the following months, neurological disturbances in adults and microcephaly in newborns emerged as complications. After the peak of the epidemic, the official system reported only four cases of Zika virus but over 100,000 cases of dengue virus. The vigilance system was unable to retrospectively estimate cases or to issue an alert to officially notified cases with possible inconsistence concerning specific arbovirosis diagnoses...
September 2016: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/27812646/one-year-after-the-zika-virus-outbreak-in-brazil-from-hypotheses-to-evidence
#7
Carlos Alexandre Antunes de Brito, Marli Tenorio Cordeiro
Zika virusis an arbovirus of the Flaviviridae family with two major strains, an Asian and an African strain. The main vectors involved in the transmission of Zika virus are the Aedes aegypti and Aedes albopictus mosquitoes. Despite its identification, discovered in 1947 in the Zika forest in Uganda, only isolated and sporadic occurrences of human infection were reported within a largely asymptomatic proportion of individuals. The first reported outbreak occurred in 2007 in the Yap Island, which belongs to the Federated States of Micronesia in the Pacific Ocean, and in French Polynesia, where high attack rates occurred and the first cases of associated Guillain-Barré syndrome were reported...
September 2016: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/27802407/west-virginia-mosquitoes-sequential-list-by-publication-newly-found-species-corrections-and-notes-for-earlier-records
#8
Eric J Dotseth, Bruce A Harrison
A chronological list of species based on date of publication is provided for confirmed mosquito species in West Virginia. Five additional newly found species in the state are documented with collection data. Two previously misidentified or mislabeled published records are corrected. The number of confirmed species occurring in the state is now 35, and many more species are likely present, but undetected. Significant populations of 4 widely distributed known vector species, Aedes albopictus , Ae. japonicus japonicus, Ae...
September 2016: Journal of the American Mosquito Control Association
https://www.readbyqxmd.com/read/27802275/knowledge-attitude-and-practices-of-vector-borne-disease-prevention-during-the-emergence-of-a-new-arbovirus-implications-for-the-control-of-chikungunya-virus-in-french-guiana
#9
Camille Fritzell, Jocelyn Raude, Antoine Adde, Isabelle Dusfour, Philippe Quenel, Claude Flamand
BACKGROUND: During the last decade, French Guiana has been affected by major dengue fever outbreaks. Although this arbovirus has been a focus of many awareness campaigns, very little information is available about beliefs, attitudes and behaviors regarding vector-borne diseases among the population of French Guiana. During the first outbreak of the chikungunya virus, a quantitative survey was conducted among high school students to study experiences, practices and perceptions related to mosquito-borne diseases and to identify socio-demographic, cognitive and environmental factors that could be associated with the engagement in protective behaviors...
November 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27783711/mechanistic-insight-into-bunyavirus-induced-membrane-fusion-from-structure-function-analyses-of-the-hantavirus-envelope-glycoprotein-gc
#10
Pablo Guardado-Calvo, Eduardo A Bignon, Eva Stettner, Scott Allen Jeffers, Jimena Pérez-Vargas, Gerard Pehau-Arnaudet, M Alejandra Tortorici, Jean-Luc Jestin, Patrick England, Nicole D Tischler, Félix A Rey
Hantaviruses are zoonotic viruses transmitted to humans by persistently infected rodents, giving rise to serious outbreaks of hemorrhagic fever with renal syndrome (HFRS) or of hantavirus pulmonary syndrome (HPS), depending on the virus, which are associated with high case fatality rates. There is only limited knowledge about the organization of the viral particles and in particular, about the hantavirus membrane fusion glycoprotein Gc, the function of which is essential for virus entry. We describe here the X-ray structures of Gc from Hantaan virus, the type species hantavirus and responsible for HFRS, both in its neutral pH, monomeric pre-fusion conformation, and in its acidic pH, trimeric post-fusion form...
October 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27743310/sex-mosquitoes-and-epidemics-an-evaluation-of-zika-disease-dynamics
#11
David Baca-Carrasco, Jorge X Velasco-Hernández
Since the first major outbreak reported on the island Yap in 2007, the Zika virus spread has alerted the scientific community worldwide. Zika is an arbovirus transmitted by Aedes mosquitoes; particularly in Central and South America, the main vector is the same mosquito that transmits dengue and chikungunya, Aedes aegypti. Seeking to understand the dynamics of spread of the Zika, in this paper, three mathematical models are presented, in which vector transmission of the virus, sexual contact transmission and migration are considered...
October 14, 2016: Bulletin of Mathematical Biology
https://www.readbyqxmd.com/read/27723047/what-can-akabane-disease-teach-us-about-other-arboviral-diseases
#12
Jacob Brenner, Ditza Rotenberg, Shami Jaakobi, Yehuda Stram, Merisol Guini-Rubinstein, Sofia Menasherov, Michel Bernstein, Yudith Yaakobovitch, Dan David, Samuel Perl
Viruses of the Simbu serogroup cause lesions to foetuses that are seen at birth and that correlate with the stage of pregnancy at which the dam first contracts the virus. The Simbu serogroup comprises arboviruses known to cause outbreaks of abnormal parturitions in domestic ruminants; these abnormalities include abortion, stillbirth, and congenitally deformed neonates. Simbu serogroup members include: Akabane virus (AKAV), Aino virus, Cache Valley virus, and Schmallenberg virus. Lately, dairy herds calf malformations have been observed in Europe, where there have been reports of clinical manifestations such as diarrhoea, fever, and reduced milk yield in adult lactating cows...
September 30, 2016: Veterinaria Italiana
https://www.readbyqxmd.com/read/27714487/neuroimaging-findings-of-zika-virus-infection-a-review-article
#13
REVIEW
Mohammad Zare Mehrjardi, Elham Keshavarz, Andrea Poretti, Adriano N Hazin
Zika virus (ZIKV) is an arbovirus from the Flaviviridae family. It is usually transmitted by mosquito bite. There have been no reports of severe symptoms caused by ZIKV infection up until the last few years. In October 2013 an outbreak was reported in French Polynesia with severe neurological complications in some affected cases. In November 2015, the Ministry of Health of Brazil attributed the increased number of neonatal microcephaly cases in northeastern Brazil to congenital ZIKV infection. The rapid spread of the virus convinced the World Health Organization to announce ZIKV infection as a "Public Health Emergency of International Concern" in February 2016...
December 2016: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/27710313/real-time-rt-pcr-assays-for-detection-and-genotyping-of-west-nile-virus-lineages-circulating-in-africa
#14
Gamou Fall, Martin Faye, Manfred Weidmann, Marco Kaiser, Anne Dupressoir, El Hadj Ndiaye, Yamar Ba, Mawlouth Diallo, Ousmane Faye, Amadou Alpha Sall
West Nile virus (WNV) is an emerging arbovirus, circulating worldwide between birds and mosquitoes, which impacts human and animal health. Since the mid-1990s, WNV outbreaks have emerged in Europe and America and represent currently the primary cause of encephalitis in the United States. WNV exhibits a great genetic diversity with at least eight different lineages circulating in the world, and four (1, 2, Koutango, and putative new) are present in Africa. These different WNV lineages are not readily differentiated by serology, and thus, rapid molecular tools are required for diagnostic...
October 6, 2016: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/27706161/full-genome-sequence-and-sfrna-interferon-antagonist-activity-of-zika-virus-from-recife-brazil
#15
Claire L Donald, Benjamin Brennan, Stephanie L Cumberworth, Veronica V Rezelj, Jordan J Clark, Marli T Cordeiro, Rafael Freitas de Oliveira França, Lindomar J Pena, Gavin S Wilkie, Ana Da Silva Filipe, Christopher Davis, Joseph Hughes, Margus Varjak, Martin Selinger, Luíza Zuvanov, Ania M Owsianka, Arvind H Patel, John McLauchlan, Brett D Lindenbach, Gamou Fall, Amadou A Sall, Roman Biek, Jan Rehwinkel, Esther Schnettler, Alain Kohl
BACKGROUND: The outbreak of Zika virus (ZIKV) in the Americas has transformed a previously obscure mosquito-transmitted arbovirus of the Flaviviridae family into a major public health concern. Little is currently known about the evolution and biology of ZIKV and the factors that contribute to the associated pathogenesis. Determining genomic sequences of clinical viral isolates and characterization of elements within these are an important prerequisite to advance our understanding of viral replicative processes and virus-host interactions...
October 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27694545/potential-vectors-of-equine-arboviruses-in-the-uk
#16
G E Chapman, D Archer, S Torr, T Solomon, M Baylis
There is growing concern about the increasing risk of disease outbreaks caused by arthropod-borne viruses (arboviruses) in both human beings and animals. There are several mosquito-borne viral diseases that cause varying levels of morbidity and mortality in horses and that can have substantial welfare and economic ramifications. While none has been recorded in the UK, vector species for some of these viruses are present, suggesting that UK equines may be at risk. The authors undertook, therefore, the first study of mosquito species on equine premises in the UK...
September 30, 2016: Veterinary Record
https://www.readbyqxmd.com/read/27690112/research-contributing-to-improvements-in-controlling-florida-s-mosquitoes-and-mosquito-borne-diseases
#17
Walter J Tabachnick
Research on mosquitoes and mosquito-borne diseases has contributed to improvements in providing effective, efficient, and environmentally proper mosquito control. Florida has benefitted from several research accomplishments that have increased the state's mosquito control capabilities. Research with Florida's mosquitoes has resulted in the development of ecologically sound management of mosquito impoundments on Florida's east coast. This strategy, called Rotational Impoundment Management (RIM), has improved the ability to target the delivery of pesticides and has helped to reduce non-target effects and environmental damage...
2016: Insects
https://www.readbyqxmd.com/read/27682270/oviposition-ecology-and-species-composition-of-aedes-spp-and-aedes-aegypti-dynamics-in-variously-urbanized-settings-in-arbovirus-foci-in-southeastern-c%C3%A3-te-d-ivoire
#18
Julien B Z Zahouli, Jürg Utzinger, Maurice A Adja, Pie Müller, David Malone, Yao Tano, Benjamin G Koudou
BACKGROUND: Aedes mosquito-transmitted outbreaks of dengue and yellow fever have been reported from rural and urban parts of Côte d'Ivoire. The present study aimed at assessing Aedes spp. oviposition ecology in variously urbanized settings within arbovirus foci in southeastern Côte d'Ivoire. METHODS: Aedes spp. eggs were sampled using a standard ovitrap method from January 2013 to April 2014 in different ecosystems of rural, suburban and urban areas. Emerged larvae were reared until the adult stage for species identification...
September 29, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27676848/neurotropism-of-arboviruses-seen-by-a-physiatric-view-martiniquaises-experiences-through-epidemics-of-dengue-chikungunya-and-zika
#19
José-Luis Barnay, Andre Cabie, Sylvie Abel, Emilie Javelle, Odile Troisgros, Patrick René-Corail
Arboviruses cause very recurrent epidemics, the oldest Dengue, known especially outside the flu-like syndrome with high fever mainly impacting vulnerable populations, may be responsible for severe hemorrhagic fevers, but also a few cases of Guillain-Barré syndrome. In 2014, the French Antilles occurred an outbreak of Chikungunya, following that of the Reunion's outbreak. During this period have been described, the articular and musculo-squellettic lesions, responsible for loss of autonomy in populations already carriers of chronic inflammatory joint damage or mechanical, but also a heavy impact on the autonomy of elderly and frail people...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27651156/structural-and-practical-identifiability-issues-of-immuno-epidemiological-vector-host-models-with-application-to-rift-valley-fever
#20
Necibe Tuncer, Hayriye Gulbudak, Vincent L Cannataro, Maia Martcheva
In this article, we discuss the structural and practical identifiability of a nested immuno-epidemiological model of arbovirus diseases, where host-vector transmission rate, host recovery, and disease-induced death rates are governed by the within-host immune system. We incorporate the newest ideas and the most up-to-date features of numerical methods to fit multi-scale models to multi-scale data. For an immunological model, we use Rift Valley Fever Virus (RVFV) time-series data obtained from livestock under laboratory experiments, and for an epidemiological model we incorporate a human compartment to the nested model and use the number of human RVFV cases reported by the CDC during the 2006-2007 Kenya outbreak...
September 2016: Bulletin of Mathematical Biology
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