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https://www.readbyqxmd.com/read/28095405/defining-the-risk-of-zika-and-chikungunya-virus-transmission-in-human-population-centers-of-the-eastern-united-states
#1
Carrie A Manore, Richard S Ostfeld, Folashade B Agusto, Holly Gaff, Shannon L LaDeau
The recent spread of mosquito-transmitted viruses and associated disease to the Americas motivates a new, data-driven evaluation of risk in temperate population centers. Temperate regions are generally expected to pose low risk for significant mosquito-borne disease; however, the spread of the Asian tiger mosquito (Aedes albopictus) across densely populated urban areas has established a new landscape of risk. We use a model informed by field data to assess the conditions likely to facilitate local transmission of chikungunya and Zika viruses from an infected traveler to Ae...
January 17, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28092259/-first-case-of-chikungunya-fever-in-hermosillo-sonora-mexico
#2
Miguel Ángel Martínez-Medina, Ismael Antonio Cañedo-Dorame
The Chikungunya is an arbovirus first described during a 1952 outbreak of febrile exantematic disease in southern Tanganyika (now Tanzania). It is a virus within the alphavirus genus of the Togaviridae family, it is usually transmitted to humans by Aedes mosquitoes. Typically, the disease manifests as acute onset of fever and joint pains. This study describes the clinical characteristics the first imported case infected with chikungunya fever (CHIK) in Hermosillo, Sonora, Mexico. We report the case of a 30 years old man seen in our emergency department due to fever, polyarthralgia, rash and headache...
January 2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28074379/neuroimaging-findings-of-congenital-zika-virus-infection-a-pictorial-essay
#3
Mohammad Zare Mehrjardi, Andrea Poretti, Thierry A G M Huisman, Heron Werner, Elham Keshavarz, Edward Araujo Júnior
Zika virus (ZIKV) is a mosquito-borne arbovirus from the Flaviviridae family. It had caused several epidemics since its discovery in 1947, but there was no significant attention to this virus until the recent outbreak in Brazil in 2015. The main concern is the causal relationship between prenatal ZIKV infection and congenital microcephaly, which has been confirmed recently. Moreover, ZIKV may cause other central nervous system abnormalities such as brain parenchymal atrophy with secondary ventriculomegaly, intracranial calcification, malformations of cortical development (such as polymicrogyria, and lissencephaly-pachygyria), agenesis/hypoplasia of the corpus callosum, cerebellar and brainstem hypoplasia, sensorineural hearing-loss, and ocular abnormalities as well as arthrogryposis in the infected fetuses...
January 10, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28068627/thiosemicarbazones-and-phthalyl-thiazoles-compounds-exert-antiviral-activity-against-yellow-fever-virus-and-saint-louis-encephalitis-virus
#4
Carolina Colombelli Pacca, Rafael Elias Marques, José Wanderlan P Espindola, Gevânio B O Oliveira Filho, Ana Cristina Lima Leite, Mauro Martins Teixeira, Mauricio L Nogueira
Arboviruses, arthropod-borneviruses, are frequency associated to human outbreak and represent a serious health problem. The genus Flavivirus, such as Yellow Fever Virus (YFV) and Saint Louis Encephalitis Virus (SLEV), are important pathogens with high morbidity and mortality worldwide. In Brazil, YFV is maintained in sylvatic cycle, but many cases are notified annually, despite the efficiency of vaccine. SLEV causes an acute encephalitis and is widely distributed in the Americas. There is no specific antiviral drugs for these viruses, only supporting treatment that can alleviate symptoms and prevent complications...
January 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28062188/a-comprehensive-analysis-and-immunobiology-of-autoimmune-neurological-syndromes-during-the-zika-virus-outbreak-in-c%C3%A3%C2%BAcuta-colombia
#5
Juan-Manuel Anaya, Yhojan Rodríguez, Diana M Monsalve, Daniel Vega, Ernesto Ojeda, Diana González-Bravo, Mónica Rodríguez-Jiménez, Carlos A Pinto-Díaz, Pablo Chaparro, María L Gunturiz, Aftab A Ansari, M Eric Gershwin, Nicolás Molano-González, Carolina Ramírez-Santana, Yeny Acosta-Ampudia
We have focused on the epidemiology and immunobiology of Zika virus (ZIKV) infection and factors associated with the development of Guillain-Barré syndrome (GBS) and other neurological syndromes in Cúcuta, the capital of North Santander department, Colombia. Data of patients with ZIKV disease reported to the national population-based surveillance system were used to calculate the basic reproduction number (R0) and the attack rates (ARs) as well as to develop epidemiological maps. Patients with neurological syndromes were contacted and their diagnoses were confirmed...
January 3, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28035106/zika-virus-infection-past-and-present-of-another-emerging-vector-borne-disease
#6
REVIEW
Hercules Sakkas, Vangelis Economou, Chrissanthy Papadopoulou
Zika virus infection is an emerging mosquito-borne disease, first identified in Uganda in 1947. It is caused by the Zika arbovirus, and transmitted by the bites of infected mosquitoes of the genus Aedes. For almost half a century, the Zika virus was reported as the causative agent of sporadic human infections. In 2007, the Zika virus emerged outside Asia and Africa causing an epidemic on the Island of Yap in Micronesia. The manifestation of the newly acquired human infection varies from asymptomatic to self-limiting acute febrile illness with symptoms and clinical features similar to those caused by the Dengue virus ('Dengue-like syndrome')...
October 2016: Journal of Vector Borne Diseases
https://www.readbyqxmd.com/read/28026036/the-re-emerging-arboviral-threat-hidden-enemies-the-emergence-of-obscure-arboviral-diseases-and-the-potential-use-of-wolbachia-in-their-control
#7
Heverton Leandro Carneiro Dutra, Eric Pearce Caragata, Luciano Andrade Moreira
Mayaro, Oropouche, and O'Nyong-Nyong share many traits with more prominent arboviruses, like dengue and yellow fever, chikungunya, and Zika. These include severe clinical symptoms, multiple animal hosts, and widespread vector species living in close proximity to human habitats, all of which constitute significant risk factors for more frequent outbreaks in the future, greatly increasing the potential of these hidden enemies to follow Zika and become the next wave of global arboviral threats. Critically, the current dearth of knowledge on these arboviruses might impede the success of future control efforts, including the potential application of Wolbachia pipientis...
December 27, 2016: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/28011732/effects-of-irrigation-and-rainfall-on-the-population-dynamics-of-rift-valley-fever-and-other-arbovirus-mosquito-vectors-in-the-epidemic-prone-tana-river-county-kenya
#8
R Sang, J Lutomiah, M Said, A Makio, H Koka, E Koskei, A Nyunja, S Owaka, D Matoke-Muhia, S Bukachi, J Lindahl, D Grace, B Bett
Rift Valley fever (RVF) is a mosquito-borne viral zoonosis that is found in most regions of sub-Saharan Africa, and it affects humans, livestock, and some wild ungulates. Outbreaks are precipitated by an abundance of mosquito vectors associated with heavy persistent rainfall with flooding. We determined the impact of flood-irrigation farming and the effect of environmental parameters on the ecology and densities of primary and secondary vectors of the RVF virus (RVFV) in an RVF-epidemic hotspot in the Tana River Basin, Kenya...
December 22, 2016: Journal of Medical Entomology
https://www.readbyqxmd.com/read/27997935/exotic-mosquito-threats-require-strategic-surveillance-and-response-planning
#9
Cameron E Webb, Stephen L Doggett
Mosquito-borne diseases caused by endemic pathogens such as Ross River, Barmah Forest and Murray Valley encephalitis viruses are an annual concern in New South Wales (NSW), Australia. More than a dozen mosquito species have been implicated in the transmission of these pathogens, with each mosquito occupying a specialised ecological niche that influences their habitat associations, host feeding preferences and the environmental drivers of their abundance. The NSW Arbovirus Surveillance and Mosquito Monitoring Program provides an early warning system for potential outbreaks of mosquito-borne disease by tracking annual activity of these mosquitoes and their associated pathogens...
December 14, 2016: Public Health Research & Practice
https://www.readbyqxmd.com/read/27992985/-monitoring-the-paraguayan-epidemiological-dengue-surveillance-system-2009-2011-using-benford-s-law
#10
Mariana Gómez-Camponovo, José Moreno, Álvaro Javier Idrovo, Malvina Páez, Marcel Achkar
INTRODUCTION: Dengue is the most widespread arbovirus worldwide. In Paraguay, it reappeared in 1988-1989, with one of the largest epidemic outbreaks occurring in 2011. OBJECTIVE: To evaluate the performance of the dengue epidemiological surveillance system in Paraguay between 2009 and 2011. MATERIALS AND METHODS: We conducted an ecological study with secondary epidemiological surveillance data. We analyzed notified cases of the disease based on the distribution expected by Benford's law...
December 1, 2016: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/27926790/molecular-surveillance-of-dengue-in-minas-gerais-provides-insights-on-dengue-virus-1-and-4-circulation-in-brazil
#11
Karina Rocha Dutra, Betânia Paiva Drumond, Izabela Maurício de Rezende, Maurício Lacerda Nogueira, Débora de Oliveira Lopes, Carlos Eduardo Calzavara Silva, Jaqueline Maria Siqueira Ferreira, Luciana Lara Dos Santos
Dengue, caused by any of the four types of Dengue virus (DENV) is the most important arbovirus in the world. In this study we performed a molecular surveillance of dengue during the greatest dengue outbreak that took place in Divinópolis, Minas Gerais state, Southeast Brazil, in 2013. Samples from 100 patients with clinical symptoms of dengue were studied and 26 were positive. The capsid/premembrane (CprM) and envelope gene sequences of some samples were amplified and sequenced. Molecular analyses demonstrated that two DENV-1 lineages, belonging to genotype V were introduced and co-circulated in Divinópolis...
November 5, 2016: Journal of Medical Virology
https://www.readbyqxmd.com/read/27892990/zika-virus-what-the-otolaryngologist-should-know-a-review
#12
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
#13
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
#14
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...
December 2016: Epidemics
https://www.readbyqxmd.com/read/27833670/dengue-zika-and-chikungunya-emerging-arboviruses-in-the-new-world
#15
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
#16
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
#17
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
#18
REVIEW
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
#19
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
#20
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
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