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https://www.readbyqxmd.com/read/28093542/disease-burden-of-dengue-in-the-philippines-adjusting-for-underreporting-by-comparing-active-and-passive-dengue-surveillance-in-punta-princesa-cebu-city
#1
Eduardo A Undurraga, Frances E Edillo, Jonathan Neil V Erasmo, Maria Theresa P Alera, In-Kyu Yoon, Francisco M Largo, Donald S Shepard
Dengue virus (DENV) is a serious threat to public health. Having reliable estimates of the burden of dengue is important to inform policy and research, but surveillance systems are not designed to capture all symptomatic DENV infections. We derived the rate of reporting of dengue by comparing active surveillance of symptomatic DENV infections in a prospective community-based seroepidemiological cohort study (N = 1008) of acute febrile illness in Punta Princesa, Cebu City, Philippines, with passive surveillance data from the Cebu City Health Department...
January 16, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28088326/acute-kidney-injury-due-to-tropical-infectious-diseases-and-animal-venoms-a-tale-of-2-continents
#2
REVIEW
Emmanuel A Burdmann, Vivekanand Jha
South and Southeast Asia and Latin American together comprise 46 countries and are home to approximately 40% of the world population. The sociopolitical and economic heterogeneity, tropical climate, and malady transitions characteristic of the region strongly influence disease behavior and health care delivery. Acute kidney injury epidemiology mirrors these inequalities. In addition to hospital-acquired acute kidney injury in tertiary care centers, these countries face a large preventable burden of community-acquired acute kidney injury secondary to tropical infectious diseases or animal venoms, affecting previously healthy young individuals...
January 11, 2017: Kidney International
https://www.readbyqxmd.com/read/28061906/bilateral-rectus-sheath-haematoma-complicating-dengue-virus-infection-in-a-patient-on-warfarin-for-mechanical-aortic-valve-replacement-a-case-report
#3
Chamith Thushanga Rosa, Mitrakrishnan Rayno Navinan, Sincy Samarawickrama, Himam Hamza, Maheshika Gunarathne, Arulprashanth Arulanantham, Neeha Subba, Udari Samarasiri, Thushara Mathias, Aruna Kulatunga
BACKGROUND: The management of Dengue virus infection can be challenging. Varied presentations and numerous complications intrinsic to dengue by itself increase the complexity of treatment and potential mortality. When burdened with the presence of additional comorbidities and the need to continue compulsory medications, clear stepwise definitive guidance is lacking and patients tend to have more complex complications and outcomes calling to question the clinical decisions that may have been taken...
January 7, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28054225/spectrum-and-burden-of-neglected-tropical-diseases-observed-in-an-infectious-and-tropical-diseases-unit-in-florence-italy-2000-2015
#4
Lorenzo Zammarchi, Iacopo Vellere, Leonardo Stella, Filippo Bartalesi, Marianne Strohmeyer, Alessandro Bartoloni
Neglected tropical diseases (NTDs) are a diverse group of acute and chronic conditions with distinct characteristics that thrive mainly among the poorest populations, almost exclusively in tropical countries. To evaluate the relevance and impact of NTDs in a temperate area, the number and features of patients diagnosed with NTDs at the Infectious and Tropical Diseases Unit (ITDU), Azienda Ospedaliero-Universitaria Careggi, Florence, Italy between 2000 and 2015 were retrospectively reviewed. Overall 289 NTD cases were diagnosed in 283 subjects accounting for 2...
January 4, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28002420/the-impact-of-the-newly-licensed-dengue-vaccine-in-endemic-countries
#5
Maíra Aguiar, Nico Stollenwerk, Scott B Halstead
BACKGROUND: With approximately 3 billion people at risk of acquiring the infection, dengue fever is now considered the most important mosquito-borne viral disease in the world, with 390 million dengue infections occurring every year, of which 96 million manifest symptoms with any level of disease severity. Treatment of uncomplicated dengue cases is only supportive and severe dengue cases require hospital intensive care. A vaccine now licensed in several countries and developed by Sanofi Pasteur (CYD-TDV, named Dengvaxia), was able to protect, in the first 25 months of the two Phase III, 66% of a subset of 9-16 year old participants...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27997935/exotic-mosquito-threats-require-strategic-surveillance-and-response-planning
#6
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/27982119/declining-prevalence-of-disease-vectors-under-climate-change
#7
Luis E Escobar, Daniel Romero-Alvarez, Renato Leon, Manuel A Lepe-Lopez, Meggan E Craft, Mercy J Borbor-Cordova, Jens-Christian Svenning
More than half of the world population is at risk of vector-borne diseases including dengue fever, chikungunya, zika, yellow fever, leishmaniasis, chagas disease, and malaria, with highest incidences in tropical regions. In Ecuador, vector-borne diseases are present from coastal and Amazonian regions to the Andes Mountains; however, a detailed characterization of the distribution of their vectors has never been carried out. We estimate the distribution of 14 vectors of the above vector-borne diseases under present-day and future climates...
December 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27973402/the-influence-of-urbanization-modes-on-the-spatial-circulation-of-flaviviruses-within-ouagadougou-burkina-faso
#8
Florence Fournet, Stéphane Rican, Zoé Vaillant, Anna Roudot, Aude Meunier-Nikiema, Daouda Kassié, Roch K Dabiré, Gérard Salem
Dengue is an emerging infectious disease of global significance. Although this virus has been reported for a long time, its significance within the burden of diseases in West Africa is not obvious, especially in Burkina Faso. Our objective was to evaluate flavivirus presence in Ouagadougou (Burkina Faso) and the link between anti-flavivirus antibody seroprevalence and urbanization modes. A population-based cross-sectional survey was conducted and 3015 children were enrolled from Ouagadougou districts with different types and degrees of urbanization (with/without equipment and high/low building density)...
December 10, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27926925/dengue-in-the-middle-east-and-north-africa-a-systematic-review
#9
John M Humphrey, Natalie B Cleton, Chantal B E M Reusken, Marshall J Glesby, Marion P G Koopmans, Laith J Abu-Raddad
BACKGROUND: Dengue virus (DENV) infection is widespread and its disease burden has increased in past decades. However, little is known about the epidemiology of dengue in the Middle East and North Africa (MENA). METHODOLOGY / PRINCIPAL FINDINGS: Following Cochrane Collaboration guidelines and reporting our findings following PRISMA guidelines, we systematically reviewed available records across MENA describing dengue occurrence in humans (prevalence studies, incidence studies, and outbreak reports), occurrence of suitable vectors (Aedes aegypti and Aedes albopictus), and DENV vector infection rates...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27915056/human-to-human-transmission-of-arthropod-borne-pathogens
#10
REVIEW
Byron E Martina, Luisa Barzon, Gorben P Pijlman, José de la Fuente, Annapaola Rizzoli, Linda J Wammes, Willem Takken, Ronald P van Rij, Anna Papa
Human-to-human (H2H) transmitted arthropod-borne pathogens are a growing burden worldwide, with malaria and dengue being the most common mosquito-borne H2H transmitted diseases. The ability of vectors to get infected by humans during a blood meal to further propel an epidemic depends on complex interactions between pathogens, vectors and humans, in which human interventions and demographic and environmental conditions play a significant role. Herein, we discuss the distal and proximal drivers affecting H2H vector-borne pathogen transmission and identify knowledge gaps and future perspectives...
December 1, 2016: Current Opinion in Virology
https://www.readbyqxmd.com/read/27909576/zika-antiviral-chemotherapy-identification-of-drugs-and-promising-starting-points-for-drug-discovery-from-an-fda-approved-library
#11
Bruno S Pascoalino, Gilles Courtemanche, Marli T Cordeiro, Laura H V G Gil, Lucio Freitas-Junior
Background The recent epidemics of Zika virus (ZIKV) implicated it as the cause of serious and potentially lethal congenital conditions such microcephaly and other central nervous system defects, as well as the development of the Guillain-Barré syndrome in otherwise healthy patients. Recent findings showed that anti-Dengue antibodies are capable of amplifying ZIKV infection by a mechanism similar to antibody-dependent enhancement, increasing the severity of the disease. This scenario becomes potentially catastrophic when the global burden of Dengue and the advent of the newly approved anti-Dengue vaccines in the near future are taken into account...
2016: F1000Research
https://www.readbyqxmd.com/read/27898668/the-long-term-safety-public-health-impact-and-cost-effectiveness-of-routine-vaccination-with-a-recombinant-live-attenuated-dengue-vaccine-dengvaxia-a-model-comparison-study
#12
Stefan Flasche, Mark Jit, Isabel Rodríguez-Barraquer, Laurent Coudeville, Mario Recker, Katia Koelle, George Milne, Thomas J Hladish, T Alex Perkins, Derek A T Cummings, Ilaria Dorigatti, Daniel J Laydon, Guido España, Joel Kelso, Ira Longini, Jose Lourenco, Carl A B Pearson, Robert C Reiner, Luis Mier-Y-Terán-Romero, Kirsten Vannice, Neil Ferguson
BACKGROUND: Large Phase III trials across Asia and Latin America have recently demonstrated the efficacy of a recombinant, live-attenuated dengue vaccine (Dengvaxia) over the first 25 mo following vaccination. Subsequent data collected in the longer-term follow-up phase, however, have raised concerns about a potential increase in hospitalization risk of subsequent dengue infections, in particular among young, dengue-naïve vaccinees. We here report predictions from eight independent modelling groups on the long-term safety, public health impact, and cost-effectiveness of routine vaccination with Dengvaxia in a range of transmission settings, as characterised by seroprevalence levels among 9-y-olds (SP9)...
November 2016: PLoS Medicine
https://www.readbyqxmd.com/read/27897196/product-release-is-rate-limiting-for-catalytic-processing-by-the-dengue-virus-protease
#13
A E Shannon, M M Pedroso, K J Chappell, D Watterson, S Liebscher, W M Kok, D P Fairlie, G Schenk, P R Young
Dengue Virus (DENV) is the most prevalent global arbovirus, yet despite an increasing burden to health care there are currently no therapeutics available to treat infection. A potential target for antiviral drugs is the two-component viral protease NS2B-NS3pro, which is essential for viral replication. Interactions between the two components have been investigated here by probing the effect on the rate of enzyme catalysis of key mutations in a mobile loop within NS2B that is located at the interface of the two components...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27883970/association-between-dengue-fever-incidence-and-meteorological-factors-in-guangzhou-china-2005-2014
#14
Jianjun Xiang, Alana Hansen, Qiyong Liu, Xiaobo Liu, Michael Xiaoliang Tong, Yehuan Sun, Scott Cameron, Scott Hanson-Easey, Gil-Soo Han, Craig Williams, Philip Weinstein, Peng Bi
This study aims to (1) investigate the associations between climatic factors and dengue; and (2) identify the susceptible subgroups. De-identified daily dengue cases in Guangzhou for 2005-2014 were obtained from the Chinese Center for Disease Control and Prevention. Weather data were downloaded from the China Meteorological Data Sharing Service System. Distributed lag non-linear models (DLNM) were used to graphically demonstrate the three-dimensional temperature-dengue association. Generalised estimating equation models (GEE) with piecewise linear spline functions were used to quantify the temperature-dengue associations...
November 22, 2016: Environmental Research
https://www.readbyqxmd.com/read/27879463/a-tale-of-two-flaviviruses-a-seroepidemiological-study-of-dengue-virus-and-west-nile-virus-transmission-in-the-ouest-and-sud-est-departments-of-haiti
#15
Thomas A Weppelmann, Alexandra Burne, Michael E von Fricken, Maha A Elbadry, Madsen Beau De Rochars, Jacques Boncy, Bernard A Okech
Though plans to eliminate malaria from the island of Hispaniola have recently received much attention, arbovirus surveillance continues to be largely neglected in Haiti. To support surveillance efforts and encourage vector-control strategies, a cross-sectional study of dengue virus (DENV) and West Nile virus (WNV) transmission was conducted using standard seroepidemiological methods. Blood samples (N = 673) were collected from 278 males and 395 females from three locations in the Ouest and Sud-Est Departments of Haiti...
November 22, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27869724/mosquito-oviposition-behavior-and-vector-control
#16
REVIEW
Jonathan F Day
The burden of gene transfer from one mosquito generation to the next falls on the female and her eggs. The selection of an oviposition site that guarantees egg and larval survival is a critical step in the reproductive process. The dangers associated with ephemeral aquatic habitats, lengthy droughts, freezing winters, and the absence of larval nutrition makes careful oviposition site selection by a female mosquito extremely important. Mosquito species exhibit a remarkable diversity of oviposition behaviors that ensure eggs are deposited into microenvironments conducive for successful larval development and the emergence of the next mosquito generation...
November 18, 2016: Insects
https://www.readbyqxmd.com/read/27843790/trends-in-clinical-trials-of-dengue-vaccine
#17
REVIEW
Priya Marimuthu, Jamuna Rani Ravinder
Dengue is one of the most important vector-borne disease and an increasing problem worldwide because of current globalization trends. Roughly, half the world's population lives in dengue endemic countries, and nearly 100 million people are infected annually with dengue. India has the highest burden of the disease with 34% of the global cases. In the context of an expanding and potentially fatal infectious disease without effective prevention or specific treatment, the public health value of a protective vaccine is clear...
October 2016: Perspectives in Clinical Research
https://www.readbyqxmd.com/read/27827943/a-spatial-hierarchical-analysis-of-the-temporal-influences-of-the-el-ni%C3%A3-o-southern-oscillation-and-weather-on-dengue-in-kalutara-district-sri-lanka
#18
Prasad Liyanage, Hasitha Tissera, Maquins Sewe, Mikkel Quam, Ananda Amarasinghe, Paba Palihawadana, Annelies Wilder-Smith, Valérie R Louis, Yesim Tozan, Joacim Rocklöv
Dengue is the major public health burden in Sri Lanka. Kalutara is one of the highly affected districts. Understanding the drivers of dengue is vital in controlling and preventing the disease spread. This study focuses on quantifying the influence of weather variability on dengue incidence over 10 Medical Officer of Health (MOH) divisions of Kalutara district. Weekly weather variables and data on dengue notifications, measured at 10 MOH divisions in Kalutara from 2009 to 2013, were retrieved and analysed. Distributed lag non-linear model and hierarchical-analysis was used to estimate division specific and overall relationships between weather and dengue...
November 4, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27827425/downregulation-of-aedes-aegypti-chromodomain-helicase-dna-binding-protein-7-kismet-by-wolbachia-and-its-effect-on-dengue-virus-replication
#19
Sultan Asad, Sonja Hall-Mendelin, Sassan Asgari
Dengue virus (DENV) is a mosquito-transmitted virus imposing a significant burden on human health around the world. Since current control strategies are not sufficient, there is an urgent need to find alternative methods to control DENV transmission. It has been demonstrated that introduction of Wolbachia pipientis in Aedes aegypti mosquitoes can impede DENV transmission with the mechanism(s) not fully understood. Recently, a number of studies have found the involvement of chromodomain DNA binding helicases in case of Human Immunodeficiency virus (HIV) and Influenza A virus infection...
November 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27825949/dengue-serotype-specific-seroprevalence-among-5-to-10-year-old-children-in-india-a-community-based-cross-sectional-study
#20
Suneela Garg, Anita Chakravarti, Ritesh Singh, N R Ramesh Masthi, Ram Chandra Goyal, Guru Rajesh Jammy, Enakshi Ganguly, Nandini Sharma, M M Singh, Germano Ferreira, Annick Moureau, Sujeet Ojha, Joshua Nealon
BACKGROUND: Dengue surveillance data in India are limited and probably substantially underestimate the burden of disease. A community-based study was undertaken to assess the prevalence of dengue-specific immunoglobulin G (IgG) antibodies in children across India and to examine historical dengue exposure rates. Potential associations between socio-economic factors and dengue seroprevalence were also assessed (registered at ctri.nic.in: CTRI/2011/12/002243). METHODS: A convenience sample of 2609 healthy children aged 5-10 years was enrolled; these children were registered at or were living in the vicinity of eight centres located at six geographically distinct sites across India...
January 2017: International Journal of Infectious Diseases: IJID
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