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https://www.readbyqxmd.com/read/28617719/guillain-barr%C3%A3-syndrome-and-zika-virus-outbreaks
#1
Osvaldo J M Nascimento, Ivan R F da Silva
PURPOSE OF REVIEW: Arboviruses have been associated with central and peripheral nervous system injuries, in special the flaviviruses. Guillain-Barré syndrome (GBS), transverse myelitis, meningoencephalitis, ophthalmological manifestations, and other neurological complications have been recently associated to Zika virus (ZIKV) infection. In this review, we aim to analyze the epidemiological aspects, possible pathophysiology, and what we have learned about the clinical and laboratory findings, as well as treatment of patients with ZIKV-associated neurological complications...
June 14, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28614394/first-report-of-naturally-infected-aedes-aegypti-with-chikungunya-virus-genotype-ecsa-in-the-americas
#2
André Luis Costa-da-Silva, Rafaella Sayuri Ioshino, Vivian Petersen, Antonio Fernando Lima, Marielton Dos Passos Cunha, Michael R Wiley, Jason T Ladner, Karla Prieto, Gustavo Palacios, Danuza Duarte Costa, Lincoln Suesdek, Paolo Marinho de Andrade Zanotto, Margareth Lara Capurro
BACKGROUND: The worldwide expansion of new emergent arboviruses such as Chikungunya and Zika reinforces the importance in understanding the role of mosquito species in spreading these pathogens in affected regions. This knowledge is essential for developing effective programs based on species specificity to avoid the establishment of endemic transmission cycles sustained by the identified local vectors. Although the first autochthonous transmission of Chikungunya virus was described in 2014 in the north of Brazil, the main outbreaks were reported in 2015 and 2016 in the northeast of Brazil...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28606643/diagnostic-accuracy-of-a-rapid-e1-antigen-test-for-chikungunya-virus-infection-in-a-reference-setting
#3
Ralph Huits, Tamaki Okabayashi, Lieselotte Cnops, Barbara Barbé, Riemsdijk Van Den Berg, Koen Bartholomeeusen, Kevin K Ariën, Jan Jacobs, Emmanuel Bottieau, Emi E Nakayama, Tatsuo Shioda, Marjan Van Esbroeck
OBJECTIVES: Rapid diagnostic tests targeting virus-specific antigen could significantly enhance the diagnostic capacity for chikungunya virus infections. We evaluated the accuracy of an immunochromatographic antigen test for the diagnosis of chikungunya in a reference laboratory for arboviruses. METHODS: an immunochromatographic rapid test that uses mouse monoclonal antibodies as a tracer against the E1-envelope protein of chikungunya (ARKRAY, Inc. Kyoto, Japan) was evaluated...
June 9, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28509947/-arboviruses-also-have-an-american-dream
#4
F Rodhain
Some arboviruses that originated in the Old World have been introduced by humans into the American continent. The first of them was the yellow fever virus, coming from the West African coast with slaves in the 17th-19th centuries, followed by dengue viruses, which were always prevalent within the Americas. Next was theWest Nile virus, introduced in New York in 1999, that spread in only a few years over the whole continent. Then, Chikungunya virus arrived on Saint Martin Island in 2013 after its outbreak in Polynesia; it is now widespread in the Caribbean Islands and on the American continent from the United States to Brazil...
May 16, 2017: Bulletin de la Société de Pathologie Exotique
https://www.readbyqxmd.com/read/28502333/zika-virus-epidemiology-pathogenesis-and-human-disease
#5
REVIEW
Elizabeth K Nugent, Anne K Nugent, Rebecca Nugent, Kenneth Nugent
The Zika virus is a positive sense, single-stranded RNA arbovirus in the Flaviviridae family, genus Flavivirus. This virus was initially isolated in Africa and is transmitted to nonhuman primates and humans by mosquitoes. Initial reports describe sporadic mild viral infection with fever, arthralgia, myalgia and conjunctivitis in Africa and Asia. However, its geographic distribution has significantly increased, and it has caused large outbreaks in the Yap Islands in 2007, in French Polynesia in 2013 and in Brazil in 2015...
May 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28499872/interaction-of-flavivirus-with-their-mosquito-vectors-and-their-impact-on-the-human-health-in-the-americas
#6
Anayansi Valderrama, Yamilka Diaz, Sandra López-Vergès
Some of the major arboviruses with public health importance, such as dengue, yellow fever, Zika and West Nile virus are mosquito-borne or mosquito-transmitted Flavivirus. Their principal vectors are from the family Culicidae, Aedes aegypti and Aedes albopictus being responsible of the urban cycles of dengue, Zika and yellow fever virus. These vectors are highly competent for transmission of many arboviruses. The genetic variability of the vectors, the environment and the viral diversity modulate the vector competence, in this context, it is important to determine which vector species is responsible of an outbreak in areas where many vectors coexist...
May 9, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28462045/on-the-entry-of-an-emerging-arbovirus-into-host-cells-mayaro-virus-takes-the-highway-to-the-cytoplasm-through-fusion-with-early-endosomes-and-caveolae-derived-vesicles
#7
Carlos A M Carvalho, Jerson L Silva, Andréa C Oliveira, Andre M O Gomes
Mayaro virus (MAYV) is an emergent sylvatic alphavirus in South America, related to sporadic outbreaks of a chikungunya-like human febrile illness accompanied by severe arthralgia. Despite its high potential for urban emergence, MAYV is still an obscure virus with scarce information about its infection cycle, including the corresponding early events. Even for prototypical alphaviruses, the cell entry mechanism still has some rough edges to trim: although clathrin-mediated endocytosis is quoted as the putative route, alternative paths as distinct as direct virus genome injection through the cell plasma membrane seems to be possible...
2017: PeerJ
https://www.readbyqxmd.com/read/28444003/species-abundance-and-temporal-variation-of-arbovirus-vectors-in-brownsville-texas
#8
Krithika Srinivasan, Beatriz Tapia, Arturo Rodriguez, Robert Wood, Jennifer J Salinas
The recent outbreaks of the dengue fever and West Nile viruses and the looming threats of the Zika and chikungunya viruses highlight the importance of establishing effective, proactive arboviral surveillance in communities at high risk of transmission, such as those on the Texas-Mexico border. Currently, there are no approved human vaccines available for these mosquito-borne diseases, so entomological control and case management are the only known methods for decreasing disease incidence. The principal vectors, which include Culex quinquefasciatus, Aedes aegypti, and Ae...
April 20, 2017: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/28425959/the-cost-of-arbovirus-disease-prevention-in-europe-area-wide-integrated-control-of-tiger-mosquito-aedes-albopictus-in-emilia-romagna-northern-italy
#9
Massimo Canali, Stefano Rivas-Morales, Philippe Beutels, Claudio Venturelli
Aedes albopictus (tiger mosquito) has become the most invasive mosquito species worldwide, in addition to being a well-known vector of diseases, with a proven capacity for the transmission of chikungunya and dengue viruses in Europe as well as the Zika virus in Africa and in laboratory settings. This research quantifies the cost that needs to be provided by public-health systems for area-wide prevention of arboviruses in Europe. This cost has been calculated by evaluating the expenditure of the plan for Aedes albopictus control set up in the Emilia-Romagna region (Northern Italy) after a chikungunya outbreak occurred in 2007...
April 20, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28413745/seven-cases-of-zika-virus-infection-in-south-florida
#10
Waqaar Khawar, Romina Bromberg, Molly Moor, Natalya Lyubynska, Hilda Mahmoudi
INTRODUCTION: Zika virus, an arbovirus of the Flaviviridae family, is a mosquito-borne virus known to cause microcephaly through vertical transmission. Infection presents with mild, self-limiting symptoms. Currently, a Zika virus outbreak has spread across most of South and Central America. Travel-related and sexually transmitted cases have been reported across the United States. However, the vector-borne transmission has been limited to Florida and Texas. We present seven cases of Zika virus infection that presented at a single institution in South Florida...
March 16, 2017: Curēus
https://www.readbyqxmd.com/read/28399216/emergent-and-reemergent-arboviruses-in-south-america-and-the-caribbean-why-so-many-and-why-now
#11
Carlos Brisola Marcondes, Marta Contigiani, Raquel Miranda Gleiser
Varios arbovirus han emergido y/o reemergido en el Nuevo Mundo en las últimas décadas. Los virus Zika y chikungunya, anteriormente restringidos a África y quizás Asia, invadieron el continente, causando gran preocupación; además siguen ocurriendo brotes causados por el virus dengue en casi todos los países, con millones de casos por año. El virus West Nile invadió rápidamente América del Norte, y ya se han encontrado casos en América Central y del Sur. Otros arbovirus, como Mayaro y el virus de la encefalitis equina del este han aumentado su actividad y se han encontrado en nuevas regiones...
May 1, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28386524/surveillance-of-arthropod-borne-viruses-and-their-vectors-in-the-mediterranean-and-black-sea-regions-within-the-medilabsecure-network
#12
REVIEW
Anna-Bella Failloux, Ali Bouattour, Chafika Faraj, Filiz Gunay, Nabil Haddad, Zoubir Harrat, Elizabeta Jancheska, Khalil Kanani, Mohamed Amin Kenawy, Majlinda Kota, Igor Pajovic, Lusine Paronyan, Dusan Petric, Mhammed Sarih, Samir Sawalha, Taher Shaibi, Kurtesh Sherifi, Tatiana Sulesco, Enkelejda Velo, Lobna Gaayeb, Kathleen Victoir, Vincent Robert
PURPOSE OF REVIEW: Arboviruses, viruses transmitted by arthropods such as mosquitoes, ticks, sandflies, and fleas are a significant threat to public health because of their epidemic and zoonotic potential. The geographical distribution of mosquito-borne diseases such as West Nile (WN), Rift Valley fever (RVF), Dengue, Chikungunya, and Zika has expanded over the last decades. Countries of the Mediterranean and Black Sea regions are not spared. Outbreaks of WN are repeatedly reported in the Mediterranean basin...
2017: Current Tropical Medicine Reports
https://www.readbyqxmd.com/read/28384059/potential-sympatric-vectors-and-mammalian-hosts-of-venezuelan-equine-encephalitis-virus-in-southern-mexico
#13
Jesús Sotomayor-Bonilla, Carlos Antonio Abella-Medrano, Andrea Chaves, Paulina Álvarez-Mendizábal, Óscar Rico-Chávez, Sergio Ibáñez-Bernal, Melinda K Rostal, Rafael Ojeda-Flores, Arturo Barbachano-Guerrero, Gustavo Gutiérrez-Espeleta, A Alonso Aguirre, Peter Daszak, Gerardo Suzán
Arboviruses are important zoonotic agents with complex transmission cycles and are not well understood because they may involve many vectors and hosts. We studied sympatric wild mammals and hematophagous mosquitoes having the potential to act as hosts and vectors in two areas of southern Mexico. Mosquitoes, bats, and rodents were captured in Calakmul (Campeche) and Montes Azules (Chiapas), between November 2010 and August 2011. Spleen samples from 146 bats and 14 rodents were tested for molecular evidence of Venezuelan equine encephalitis virus (VEEV), eastern equine encephalitis virus (EEEV), western equine encephalitis virus (WEEV), and West Nile virus (WNV) using PCR protocols...
April 6, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28357156/does-zika-virus-cause-microcephaly-applying-the-bradford-hill-viewpoints
#14
Asma Awadh, Abrar Ahmad Chughtai, Amalie Dyda, Mohamud Sheikh, David J Heslop, Chandini Raina MacIntyre
INTRODUCTION: Zika virus has been documented since 1952, but been associated with mild, self-limiting disease. Zika virus is classified as an arbovirus from a family of Flaviviridae and primarily spread by Aedes Aegypti mosquitos. However, in a large outbreak in Brazil in 2015, Zika virus has been associated with microcephaly. METHODS: In this review we applied the Bradford-Hill viewpoints  to investigate the association between Zika virus and microcephaly. We examined historical studies, available data and also compared historical rates of microcephaly prior to the Zika virus outbreak...
February 22, 2017: PLoS Currents
https://www.readbyqxmd.com/read/28321362/from-eggs-to-bites-do-ovitrap-data-provide-reliable-estimates-of-aedes-albopictus-biting-females
#15
Mattia Manica, Roberto Rosà, Alessandra Della Torre, Beniamino Caputo
BACKGROUND: Aedes albopictus is an aggressive invasive mosquito species that represents a serious health concern not only in tropical areas, but also in temperate regions due to its role as vector of arboviruses. Estimates of mosquito biting rates are essential to account for vector-human contact in models aimed to predict the risk of arbovirus autochthonous transmission and outbreaks, as well as nuisance thresholds useful for correct planning of mosquito control interventions. Methods targeting daytime and outdoor biting Ae...
2017: PeerJ
https://www.readbyqxmd.com/read/28286701/first-report-of-the-east-central-south-african-genotype-of-chikungunya-virus-in-rio-de-janeiro-brazil
#16
Thiara Manuele Alves Souza, Elzinandes Leal Azeredo, Jessica Badolato-Corrêa, Paulo Vieira Damasco, Carla Santos, Fabienne Petitinga-Paiva, Priscila Conrado Guerra Nunes, Luciana Santos Barbosa, Márcio Costa Cipitelli, Thais Chouin-Carneiro, Nieli Rodrigues Costa Faria, Rita Maria Ribeiro Nogueira, Fernanda de Bruycker-Nogueira, Flavia Barreto Dos Santos
BACKGROUND: Chikungunya virus (CHIKV) is an arbovirus that causes an acute febrile syndrome with a severe and debilitating arthralgia. In Brazil, the Asian and East-Central South African (ECSA) genotypes are circulating in the north and northeast of the country, respectively. In 2015, the first autochthonous cases in Rio de Janeiro, Brazil were reported but until now the circulating strains have not been characterized. Therefore, we aimed here to perform the molecular characterization and phylogenetic analysis of CHIKV strains circulating in the 2016 outbreak occurred in the municipality of Rio de Janeiro...
February 14, 2017: PLoS Currents
https://www.readbyqxmd.com/read/28286698/-i-aedes-aegypti-i-control-through-modernized-integrated-vector-management
#17
Laith Yakob, Sebastian Funk, Anton Camacho, Oliver Brady, W John Edmunds
INTRODUCTION: In the context of the ongoing, unprecedented Zika virus outbreak in the Americas, the World Health Organization has expressed its support for developing and up-scaling three novel approaches to controlling the Aedes aegypti mosquito: the Sterile Insect Technique (SIT), the Release of Insects carrying Dominant Lethal genes (RIDL) and the release of Wolbachia-infected mosquitoes. Whereas the former two approaches are temporary insect population suppression strategies, Wolbachia infection is a self-sustaining, invasive strategy that uses inherited endosymbiotic bacteria to render natural mosquito populations arbovirus resistant...
January 30, 2017: PLoS Currents
https://www.readbyqxmd.com/read/28240033/seroprevalence-of-rift-valley-fever-in-cattle-along-the-akagera-nyabarongo-rivers-rwanda
#18
Thérèse Umuhoza, Dirk Berkvens, Isidore Gafarasi, Joseph Rukelibuga, Borden Mushonga, Savino Biryomumaisho
Rift Valley fever (RVF) virus is caused by a zoonotic arbovirus that is endemic to eastern and southern Africa. It has also been reported in West and North Africa, Madagascar and the Arabian Peninsula. The virus is transmitted by mosquitoes, but people can also become infected while handling blood or other body fluids of animals and humans with RVF. In 2007, there was a large outbreak of RVF in Kenya, Tanzania, Sudan and Somalia. Outbreaks were also reported in South Africa in 2008-2011. The epidemiology of RVF and factors for disease occurrence in Rwanda are neither clear nor documented...
January 20, 2017: Journal of the South African Veterinary Association
https://www.readbyqxmd.com/read/28212379/distribution-and-abundance-of-key-vectors-of-rift-valley-fever-and-other-arboviruses-in-two-ecologically-distinct-counties-in-kenya
#19
Rosemary Sang, Samwel Arum, Edith Chepkorir, Gladys Mosomtai, Caroline Tigoi, Faith Sigei, Olivia Wesula Lwande, Tobias Landmann, Hippolyte Affognon, Clas Ahlm, Magnus Evander
BACKGROUND: Rift Valley fever (RVF) is a mosquito-borne viral zoonosis of ruminants and humans that causes outbreaks in Africa and the Arabian Peninsula with significant public health and economic consequences. Humans become infected through mosquito bites and contact with infected livestock. The virus is maintained between outbreaks through vertically infected eggs of the primary vectors of Aedes species which emerge following rains with extensive flooding. Infected female mosquitoes initiate transmission among nearby animals, which amplifies virus, thereby infecting more mosquitoes and moving the virus beyond the initial point of emergence...
February 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28192064/aedes-borne-virus-mosquito-interactions-mass-spectrometry-strategies-and-findings
#20
Victoria Pando-Robles, Cesar V Batista
Aedes-borne viruses are responsible for high-impact neglected tropical diseases and unpredictable outbreaks such as the ongoing Zika epidemics. Aedes mosquitoes spread different arboviruses such as Dengue virus (DENV), Chikungunya virus (CHIKV), and Zika virus, among others, and are responsible for the continuous emergence and reemergence of these pathogens. These viruses have complex transmission cycles that include two hosts, namely the Aedes mosquito as a vector and susceptible vertebrate hosts. Human infection with arboviruses causes diseases that range from subclinical or mild to febrile diseases, encephalitis, and hemorrhagic fever...
June 2017: Vector Borne and Zoonotic Diseases
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