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https://www.readbyqxmd.com/read/28822782/yellow-fever-vaccination-estimating-coverage
#1
Annelies Wilder-Smith
No abstract text is available yet for this article.
August 16, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28822780/global-yellow-fever-vaccination-coverage-from-1970-to-2016-an-adjusted-retrospective-analysis
#2
Freya M Shearer, Catherine L Moyes, David M Pigott, Oliver J Brady, Fatima Marinho, Aniruddha Deshpande, Joshua Longbottom, Annie J Browne, Moritz U G Kraemer, Kathleen M O'Reilly, Joachim Hombach, Sergio Yactayo, Valdelaine E M de Araújo, Aglaêr A da Nóbrega, Jonathan F Mosser, Jeffrey D Stanaway, Stephen S Lim, Simon I Hay, Nick Golding, Robert C Reiner
BACKGROUND: Substantial outbreaks of yellow fever in Angola and Brazil in the past 2 years, combined with global shortages in vaccine stockpiles, highlight a pressing need to assess present control strategies. The aims of this study were to estimate global yellow fever vaccination coverage from 1970 through to 2016 at high spatial resolution and to calculate the number of individuals still requiring vaccination to reach population coverage thresholds for outbreak prevention. METHODS: For this adjusted retrospective analysis, we compiled data from a range of sources (eg, WHO reports and health-service-provider registeries) reporting on yellow fever vaccination activities between May 1, 1939, and Oct 29, 2016...
August 16, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28818926/on-the-trail-of-yellow-fever
#3
Sam Kean
No abstract text is available yet for this article.
August 18, 2017: Science
https://www.readbyqxmd.com/read/28817563/assessment-of-risk-of-dengue-and-yellow-fever-virus-transmission-in-three-major-kenyan-cities-based-on-stegomyia-indices
#4
Sheila B Agha, David P Tchouassi, Armanda D S Bastos, Rosemary Sang
Dengue (DEN) and yellow fever (YF) are re-emerging in East Africa, with contributing drivers to this trend being unplanned urbanization and increasingly adaptable anthropophilic Aedes (Stegomyia) vectors. Entomological risk assessment of these diseases remains scarce for much of East Africa and Kenya even in the dengue fever-prone urban coastal areas. Focusing on major urban cities of Kenya, we compared DEN and YF risk in Kilifi County (DEN-outbreak-prone), and Kisumu and Nairobi Counties (no documented DEN outbreaks)...
August 17, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28815931/organization-of-the-flavivirus-rna-replicase-complex
#5
REVIEW
Carolin Brand, Martin Bisaillon, Brian J Geiss
Flaviviruses, such as dengue, Japanese encephalitis, West Nile, yellow fever, and Zika viruses, are serious human pathogens that cause significant morbidity and mortality globally each year. Flaviviruses are single-stranded, positive-sense RNA viruses, and encode two multidomain proteins, NS3 and NS5, that possess all enzymatic activities required for genome replication and capping. NS3 and NS5 interact within virus-induced replication compartments to form the RNA genome replicase complex. Although the individual enzymatic activities of both proteins have been extensively studied and are well characterized, there are still gaps in our understanding of how they interact to efficiently coordinate their respective activities during positive-strand RNA synthesis and capping...
August 16, 2017: Wiley Interdisciplinary Reviews. RNA
https://www.readbyqxmd.com/read/28811340/type-iii-interferon-mediated-signaling-is-critical-for-controlling-live-attenuated-yellow-fever-virus-infection-in-vivo
#6
Florian Douam, Yentli E Soto Albrecht, Gabriela Hrebikova, Evita Sadimin, Christian Davidson, Sergei V Kotenko, Alexander Ploss
Yellow fever virus (YFV) is an arthropod-borne flavivirus, infecting ~200,000 people worldwide annually and causing about 30,000 deaths. The live attenuated vaccine strain, YFV-17D, has significantly contributed in controlling the global burden of yellow fever worldwide. However, the viral and host contributions to YFV-17D attenuation remain elusive. Type I interferon (IFN-α/β) signaling and type II interferon (IFN-γ) signaling have been shown to be mutually supportive in controlling YFV-17D infection despite distinct mechanisms of action in viral infection...
August 15, 2017: MBio
https://www.readbyqxmd.com/read/28810279/-severe-yellow-fever-vaccine-associated-disease-a-case-report-and-current-overview
#7
Günther Slesak, Martin Gabriel, Cristina Domingo, Johannes Schäfer
History and physical examination A 56-year-old man developed high fever with severe headaches, fatigue, impaired concentration skills, and an exanthema 5 days after a yellow fever (YF) vaccination. Laboratory tests Liver enzymes and YF antibody titers were remarkably elevated. YF vaccine virus was detected in urine by PCR. Diagnosis and therapy Initially, severe YF vaccine-associated visceral disease was suspected and treated symptomatically. Clinical Course His fever ceased after 10 days in total, no organ failure developed...
August 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28806786/an-economic-evaluation-of-vector-control-in-the-age-of-a-dengue-vaccine
#8
Christopher Fitzpatrick, Alexander Haines, Mathieu Bangert, Andrew Farlow, Janet Hemingway, Raman Velayudhan
INTRODUCTION: Dengue is a rapidly emerging vector-borne Neglected Tropical Disease, with a 30-fold increase in the number of cases reported since 1960. The economic cost of the illness is measured in the billions of dollars annually. Environmental change and unplanned urbanization are conspiring to raise the health and economic cost even further beyond the reach of health systems and households. The health-sector response has depended in large part on control of the Aedes aegypti and Ae...
August 14, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28805465/what-we-are-watching-top-global-infectious-disease-threats-2013-2016-an-update-from-cdc-s-global-disease-detection-operations-center
#9
Kira A Christian, A Danielle Iuliano, Timothy M Uyeki, Eric D Mintz, Stuart T Nichol, Pierre Rollin, J Erin Staples, Ray R Arthur
To better track public health events in areas where the public health system is unable or unwilling to report the event to appropriate public health authorities, agencies can conduct event-based surveillance, which is defined as the organized collection, monitoring, assessment, and interpretation of unstructured information regarding public health events that may represent an acute risk to public health. The US Centers for Disease Control and Prevention's (CDC's) Global Disease Detection Operations Center (GDDOC) was created in 2007 to serve as CDC's platform dedicated to conducting worldwide event-based surveillance, which is now highlighted as part of the "detect" element of the Global Health Security Agenda (GHSA)...
August 14, 2017: Health Security
https://www.readbyqxmd.com/read/28799735/yellow-fever-in-africa-and-the-americas-2016
#10
(no author information available yet)
No abstract text is available yet for this article.
August 11, 2017: Relevé épidémiologique Hebdomadaire
https://www.readbyqxmd.com/read/28796789/multiple-introductions-of-the-dengue-vector-aedes-aegypti-into-california
#11
Evlyn Pless, Andrea Gloria-Soria, Benjamin R Evans, Vicki Kramer, Bethany G Bolling, Walter J Tabachnick, Jeffrey R Powell
The yellow fever mosquito Aedes aegypti inhabits much of the tropical and subtropical world and is a primary vector of dengue, Zika, and chikungunya viruses. Breeding populations of A. aegypti were first reported in California (CA) in 2013. Initial genetic analyses using 12 microsatellites on collections from Northern CA in 2013 indicated the South Central US region as the likely source of the introduction. We expanded genetic analyses of CA A. aegypti by: (a) examining additional Northern CA samples and including samples from Southern CA, (b) including more southern US populations for comparison, and (c) genotyping a subset of samples at 15,698 SNPs...
August 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28793027/oviposition-behavior-of-haemagogus-leucocelaenus-diptera-culicidae-a-vector-of-wild-yellow-fever-in-brazil
#12
Aline Tátila-Ferreira, Daniele de Aguiar Maia, Filipe Vieira Santos de Abreu, William Costa Rodrigues, Jeronimo Alencar
Haemagogus leucocelaenus, which is considered a major vector of wild yellow fever, exhibits acrodendrophilic habits and mainly deposits its eggs in treeholes and bamboo internodes. The selection of nursery sites is essential in the life history and reproductive success of mosquitoes. The present work investigated the preferred oviposition height and period of Hg. leucocelaenus in an Atlantic forest area in Rio de Janeiro. Sampling was performed using oviposition traps that were placed on plant material at 0, 2, 4, 6, and 8 m above the ground, from August 2015 to July 2016...
August 7, 2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/28777090/high-resolution-structure-of-a-kazal-type-serine-protease-inhibitor-from-the-dengue-vector-aedes-aegypti
#13
Ricardo J S Torquato, Stephen Lu, Nadia Helena Martins, Aparecida S Tanaka, Pedro José Barbosa Pereira
Blood-feeding exoparasites are rich sources of protease inhibitors, and the mosquito Aedes aegypti, which is a vector of Dengue virus, Yellow fever virus, Chikungunya virus and Zika virus, is no exception. AaTI is a single-domain, noncanonical Kazal-type serine proteinase inhibitor from A. aegypti that recognizes both digestive trypsin-like serine proteinases and the central protease in blood clotting, thrombin, albeit with an affinity that is three orders of magnitude lower. Here, the 1.4 Å resolution crystal structure of AaTI is reported from extremely tightly packed crystals (∼22% solvent content), revealing the structural determinants for the observed inhibitory profile of this molecule...
August 1, 2017: Acta Crystallographica. Section F, Structural Biology Communications
https://www.readbyqxmd.com/read/28771605/impact-of-prior-flavivirus-immunity-on-zika-virus-infection-in-rhesus-macaques
#14
Michael K McCracken, Gregory D Gromowski, Heather L Friberg, Xiaoxu Lin, Peter Abbink, Rafael De La Barrera, Kenneth H Eckles, Lindsey S Garver, Michael Boyd, David Jetton, Dan H Barouch, Matthew C Wise, Bridget S Lewis, Jeffrey R Currier, Kayvon Modjarrad, Mark Milazzo, Michelle Liu, Anna B Mullins, J Robert Putnak, Nelson L Michael, Richard G Jarman, Stephen J Thomas
Studies have demonstrated cross-reactivity of anti-dengue virus (DENV) antibodies in human sera against Zika virus (ZIKV), promoting increased ZIKV infection in vitro. However, the correlation between in vitro and in vivo findings is not well characterized. Thus, we evaluated the impact of heterotypic flavivirus immunity on ZIKV titers in biofluids of rhesus macaques. Animals previously infected (≥420 days) with DENV2, DENV4, or yellow fever virus were compared to flavivirus-naïve animals following infection with a Brazilian ZIKV strain...
August 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28770688/tree-hole-mosquito-species-composition-and-relative-abundances-differ-between-urban-and-adjacent-forest-habitats-in-northwestern-argentina
#15
C Mangudo, J P Aparicio, G C Rossi, R M Gleiser
Water-holding tree holes are main larval habitats for many pathogen vectors, especially mosquitoes (Diptera: Culicidae). Along 3 years, the diversity and composition of mosquito species in tree holes of two neighbouring but completely different environments, a city and its adjacent forest, were compared using generalized linear mixed models, PERMANOVA, SIMPER and species association indexes. The city area (Northwest Argentina) is highly relevant epidemiologically due to the presence of Aedes aegypti L. (main dengue vector) and occurrence of dengue outbreaks; the Yungas rainforests are highly biologically diverse...
August 3, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28764795/participation-of-14-3-3%C3%AE%C2%B5-and-14-3-3%C3%AE-proteins-in-the-phagocytosis-component-of-cellular-immune-response-in-aedes-mosquito-cell-lines
#16
Abel Trujillo-Ocampo, Febe Elena Cázares-Raga, Rosa María Del Angel, Fernando Medina-Ramírez, Leopoldo Santos-Argumedo, Mario H Rodríguez, Fidel de la Cruz Hernández-Hernández
BACKGROUND: Better knowledge of the innate immune system of insects will improve our understanding of mosquitoes as potential vectors of diverse pathogens. The ubiquitously expressed 14-3-3 protein family is evolutionarily conserved from yeast to mammals, and at least two isoforms of 14-3-3, the ε and ζ, have been identified in insects. These proteins have been shown to participate in both humoral and cellular immune responses in Drosophila. As mosquitoes of the genus Aedes are the primary vectors for arboviruses, causing several diseases such as dengue fever, yellow fever, Zika and chikungunya fevers, cell lines derived from these mosquitoes, Aag-2 from Aedes aegypti and C6/36 HT from Aedes albopictus, are currently used to study the insect immune system...
August 1, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28761113/cell-fusing-agent-virus-and-dengue-virus-mutually-interact-in-aedes-aegypti-cell-lines
#17
Guangmei Zhang, Sultan Asad, Alexander A Khromykh, Sassan Asgari
The genus Flavivirus contains more than 70 single-stranded, positive-sense arthropod-borne RNA viruses. Some flaviviruses are particularly medically important to humans and other vertebrates including dengue virus (DENV), West Nile virus, and yellow fever virus. These viruses are transmitted to vertebrates by mosquitoes and other arthropod species. Mosquitoes are also infected by insect-specific flaviviruses (ISFs) that do not appear to be infective to vertebrates. Cell fusing agent virus (CFAV) was the first described ISF, which was discovered in an Aedes aegypti cell culture...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28760831/a-mosquito-entomoglyceroporin-aedes-aegypti-aqp5-participates-in-water-transport-across-the-malpighian-tubules-of-larvae
#18
Lidiya Misyura, Gil Y Yerushalmi, Andrew Donini
The mosquito, Aedes aegypti, is the primary vector for arboviral diseases such as Zika fever, dengue fever, chikungunya, and yellow fever. The larvae reside in hypo-osmotic freshwater habitats, where they face dilution of their body fluids from osmotic influx of water. The Malpighian tubules help maintain ionic and osmotic homeostasis by removing excess water from the hemolymph, but the transcellular pathway for this movement remains unresolved. Aquaporins are transmembrane channels thought to permit transcellular transport of water from the hemolymph into the Malpighian tubule lumen...
July 31, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28754189/progress-and-works-in-progress-update-on-flavivirus-vaccine-development
#19
REVIEW
Matthew H Collins, Stefan W Metz
Most areas of the globe are endemic for at least one flavivirus, putting billions at risk for infection. This diverse group of viral pathogens causes a range of manifestations in humans from asymptomatic infection to hemorrhagic fever to encephalitis to birth defects and even death. Many flaviviruses are transmitted by mosquitos and have expanded in geographic distribution in recent years, with dengue virus being the most prevalent, infecting approximately 400 million people each year. The explosive emergence of Zika virus in Latin America in 2014 refocused international attention on this medically important group of viruses...
July 25, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28753671/self-reported-infections-during-international-travel-and-notifiable-infections-among-returning-international-travellers-sweden-2009-2013
#20
Viktor Dahl, Anders Wallensten
We studied food and water-borne diseases (FWDs), sexually transmitted diseases (STDs), vector-borne diseases (VBDs) and diseases vaccinated against in the Swedish childhood vaccination programme among Swedish international travellers, in order to identify countries associated with a high number of infections. We used the national database for notifiable infections to estimate the number of FWDs (campylobacteriosis, salmonellosis, giardiasis, shigellosis, EHEC, Entamoeba histolytica, yersinosis, hepatitis A, paratyphoid fever, typhoid fever, hepatitis E, listeriosis, cholera), STIs (chlamydia, gonorrhoea and acute hepatitis B), VBDs (dengue fever, malaria, West Nile fever, Japanese encephalitis and yellow fever) and diseases vaccinated against in the Swedish childhood vaccination programme (pertussis, measles, mumps, rubella, diphtheria) acquired abroad 2009-2013...
2017: PloS One
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