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https://www.readbyqxmd.com/read/27918577/control-of-aedes-aegypti-breeding-a-novel-intervention-for-prevention-and-control-of-dengue-in-an-endemic-zone-of-delhi-india
#1
B N Nagpal, Sanjeev Kumar Gupta, Arshad Shamim, Kumar Vikram, Aruna Srivastava, N R Tuli, Rekha Saxena, Himmat Singh, V P Singh, V N Bhagat, N K Yadav, Neena Valecha
BACKGROUND AND OBJECTIVE: The study is based on hypothesis that whether continuous entomological surveillance of Ae. aegypti and simultaneous appropriate interventions in key containers during non-transmission (December-May) months would have any impact on breeding of Aedes and dengue cases during the following transmission months (June-November). The impact of the surveillance and intervention measures undertaken during non-transmission months were assessed by entomological indicators namely container index (CI), house index (HI), pupal index (PI) and breteau index (BI)...
2016: PloS One
https://www.readbyqxmd.com/read/27909576/zika-antiviral-chemotherapy-identification-of-drugs-and-promising-starting-points-for-drug-discovery-from-an-fda-approved-library
#2
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/27908746/willingness-to-pay-for-a-dengue-vaccine-and-its-associated-determinants-in-indonesia-a-community-based-cross-sectional-survey-in-aceh
#3
Harapan Harapan, Samsul Anwar, Aslam Bustamam, Arsil Radiansyah, Pradiba Angraini, Riny Fasli, Salwiyadi Salwiyadi, Reza Akbar Bastian, Ade Oktiviyari, Imaduddin Akmal, Muhammad Iqbalamin, Jamalul Adil, Fenni Henrizal, Darmayanti Darmayanti, Mahmuda Mahmuda, Mudatsir Mudatsir, Allison Imrie, R Tedjo Sasmono, Ulrich Kuch, Ziv Shkedy, Setia Pramana
Vaccination strategies are being considered as a part of dengue prevention programs in endemic countries. To accelerate the introduction of dengue vaccine into the public sector program and private markets, understanding the private economic benefits of a dengue vaccine is therefore essential. The aim of this study was to assess the willingness to pay (WTP) for a dengue vaccine among community members in Indonesia and its associated explanatory variables. A community-based, cross-sectional survey was conducted in nine regencies of Aceh province, Indonesia, from November 2014 to March 2015...
November 28, 2016: Acta Tropica
https://www.readbyqxmd.com/read/27907248/mycobacterium-ulcerans-toxin-mycolactone-may-enhance-host-seeking-and-oviposition-behavior-by-aedes-aegypti-l-diptera-culicidae
#4
M L Sanders, H R Jordan, C Serewis-Pond, L Zheng, M E Benbow, P L Small, J K Tomberlin
The ecological functions of many toxins continue to remain unknown for those produced by environmental pathogens. Mycobacterium ulcerans, the causative agent of the neglected tropical disease, Buruli ulcer, produces a cytotoxic macrolide, mycolactone, whose function(s) in the environment remains elusive. Through a series of dual-choice behavior assays, we show that mycolactone may be an interkingdom cue for the yellow fever mosquito, Aedes aegypti, seeking blood-meals as well as oviposition sites. Results provide novel insight into the evolution between bacteria and potential vectors...
December 1, 2016: Environmental Microbiology
https://www.readbyqxmd.com/read/27902502/zika-virus-and-patient-blood-management
#5
Lawrence T Goodnough, Marisa B Marques
Sporadic Zika virus infections had only occurred in Africa and Asia until an outbreak in Micronesia (Oceania) in 2007. In 2013 to 2014, several outer Pacific Islands reported local outbreaks. Soon thereafter, the virus was likely introduced in Brazil from competing athletes from French Polynesia and other countries that participated in a competition there. Transmission is thought to have occurred through mosquito bites and spread to the immunologically naive population. Being also a flavivirus, the Zika virus is transmitted by the Aedes mosquito that is endemic in South and Central America that is also the vector of West Nile virus, dengue, and chikungunya...
November 29, 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27902364/markers-of-dengue-severity-systematic-review-of-cytokines-and-chemokines
#6
Yie Hou Lee, Wei Yee Leong, Annelies Wilder-Smith
Prognosis of dengue remains a challenge in allowing the early, objective triage of patients with dengue fever of differing severity. Circulating immuno-modulating proteins have brought new possibilities as prognostic markers of severe dengue. The systematic review is devoted to understanding the potential utility of blood-based cytokines and chemokines as prognostication markers of severe dengue based on current literature. PUBMED and EMBASE were searched. Of 794 candidate articles, 685 abstracts were screened against our exclusion/inclusion criteria and 25 (3...
October 21, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27883970/association-between-dengue-fever-incidence-and-meteorological-factors-in-guangzhou-china-2005-2014
#7
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/27882950/neutralization-mechanism-of-a-highly-potent-antibody-against-zika-virus
#8
Shuijun Zhang, Victor A Kostyuchenko, Thiam-Seng Ng, Xin-Ni Lim, Justin S G Ooi, Sebastian Lambert, Ter Yong Tan, Douglas G Widman, Jian Shi, Ralph S Baric, Shee-Mei Lok
The rapid spread of Zika virus (ZIKV), which causes microcephaly and Guillain-Barré syndrome, signals an urgency to identify therapeutics. Recent efforts to rescreen dengue virus human antibodies for ZIKV cross-neutralization activity showed antibody C10 as one of the most potent. To investigate the ability of the antibody to block fusion, we determined the cryoEM structures of the C10-ZIKV complex at pH levels mimicking the extracellular (pH8.0), early (pH6.5) and late endosomal (pH5.0) environments. The 4...
November 24, 2016: Nature Communications
https://www.readbyqxmd.com/read/27881649/the-many-faces-of-the-flavivirus-ns5-protein-in-antagonism-of-type-i-interferon-signaling
#9
Sonja M Best
The vector-borne flaviviruses cause severe disease in humans on every inhabited continent on earth. Their transmission by arthropods, particularly mosquitoes, facilitates large emergence events such as witnessed with Zika virus (ZIKV) or West Nile virus in the Americas. Every vector-borne flavivirus examined thus far that causes disease in humans, from dengue virus to ZIKV, antagonizes the host type I interferon (IFN-I) response by preventing JAK-STAT signaling, suggesting that suppression of this pathway is an important determinant of infection...
November 23, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27870689/zika-virus-and-diagnostics
#10
Claudia Raja Gabaglia
PURPOSE OF REVIEW: The purpose of this review is to present what is known about the Zika virus (ZIKV) at the time of writing this review. The viral structure and its phylogeny, as well as the limitations of current available techniques used for diagnosis, are discussed. RECENT FINDINGS: Crystallography and cryo-electron microscopy of the whole ZIKV, or a few of its proteins, are confirming its overall antigenic relatedness to other flaviviruses. Sequencing has revealed its dynamic genetic variation and has placed the Western cluster of Zika isolates within the Asian phylogenic tree...
November 18, 2016: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/27866627/green-synthesized-nanoparticles-in-the-fight-against-mosquito-borne-diseases-and-cancer-a-brief-review
#11
Giovanni Benelli
Nanobiomedicine and parasitology are facing a number of key challenges, which mostly deal with the paucity of effective preventive and curative tools against mosquito-borne diseases and cancer. In this scenario, the employ of botanical and invertebrate extracts as reducing, stabilizing and capping agents for the synthesis of nanoparticles is advantageous over chemical and physical methods, since it is one-pot, cheap, and does not require high pressure, energy, temperature, or the use of highly toxic chemicals...
December 2016: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/27865829/trend-and-geographic-analysis-of-the-prevalence-of-dengue-in-taiwan-2010-2015
#12
Jason C Hsu, Chin-Lin Hsieh, Christine Y Lu
BACKGROUND: Dengue is the most rapidly spreading disease caused by a mosquito-borne virus in the world. The incidence of dengue globally has increased 30-fold in the last 50 years. Understanding the prevalence of dengue and its longitudinal trends can improve prevention and control strategies. This study assessed the trends in prevalence of dengue in Taiwan by population characteristics and geographical region. METHODS: Dengue and population data for the years 2010-2015 were obtained from the public statistics databases of the Taiwan Centers for Disease Control and Department of Statistics, Taiwan Ministry of Interior...
November 16, 2016: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/27862008/zika-virus-global-health-challenge-threat-and-current-situation
#13
REVIEW
Hafsa Aziz, Aadarash Zia, Amania Anwer, Muneeba Aziz, Shazia Fatima, Muhammad Faheem
ZIKV has emerged as grave global health issue in the past few years. ZIKV was firstly isolated in 1947 from a rhesus sentinel monkey in the Zika forest in Uganda. It is usually transmitted by the bite of infected mosquitoes and infects skin fibroblasts, skin keratinocytes etc. ZIKV until now was under reported because of its clinical similarity with the dengue and chikungunya. It usually spread through the course of the sylvatic cycle. In this cycle, the virus or pathogen lifespan is spent between the wild animal and vectors...
November 10, 2016: Journal of Medical Virology
https://www.readbyqxmd.com/read/27861514/the-driving-force-for-2014-dengue-outbreak-in-guangdong-china
#14
Ming-Tao Li, Gui-Quan Sun, Laith Yakob, Huai-Ping Zhu, Zhen Jin, Wen-Yi Zhang
Dengue fever has rapidly spread in recent decades to become the most globally expansive viral vector-borne disease. In mainland China, a number of dengue outbreaks have been reported since 1978, but the worst epidemic in decades, involving 45230 cases and 76 imported cases, resulting in six deaths in Guangdong province, emerged in 2014. Reasons for this ongoing surge in dengue, both imported and autochthonous, are currently unclear and demand urgent investigation. Here, a seasonally-driven dynamic epidemiological model was used to simulate dengue transmission data recorded from the unprecedented outbreak...
2016: PloS One
https://www.readbyqxmd.com/read/27849636/the-potential-role-of-wolbachia-in-controlling-the-transmission-of-emerging-human-arboviral-infections
#15
Joseph Kamtchum-Tatuene, Benjamin L Makepeace, Laura Benjamin, Matthew Baylis, Tom Solomon
PURPOSE OF REVIEW: Wolbachia is a genus of Gram-negative intracellular bacteria that is naturally found in more than half of all arthropod species. These bacteria cannot only reduce the fitness and the reproductive capacities of arthropod vectors, but also increase their resistance to arthropod-borne viruses (arboviruses). This article reviews the evidence supporting a Wolbachia-based strategy for controlling the transmission of dengue and other arboviral infections. RECENT FINDINGS: Studies conducted 1 year after the field release of Wolbachia-infected mosquitoes in Australia have demonstrated the suppression of dengue virus (DENV) replication in and dissemination by mosquitoes...
November 15, 2016: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/27843790/trends-in-clinical-trials-of-dengue-vaccine
#16
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/27843186/wolbachia-the-selfish-trojan-horse-in-dengue-control
#17
REVIEW
M S Mustafa, V Rastogi, R K Gupta, S Jain, P M P Singh, A Gupta
Dengue fever has re-emerged as a major public health challenge. Of late, several promising attempts have been made to control the disease with limited success. An innovative method of biological control of dengue is the use of the bacterium Wolbachia. Selected strains of Wolbachia have been introduced into Aedes aegypti to prevent transmission of dengue viruses by the vector. Wolbachia prevents dengue transmission by either directly blocking the virus or by decreasing the lifespan of the vector. The mechanism by which it causes these effects is not clearly understood...
October 2016: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/27843167/use-of-transgenic-aedes-aegypti-in-brazil-risk-perception-and-assessment
#18
Paulo Paes de Andrade, Francisco José Lima Aragão, Walter Colli, Odir Antônio Dellagostin, Flávio Finardi-Filho, Mario Hiroyuki Hirata, Amaro de Castro Lira-Neto, Marcia Almeida de Melo, Alexandre Lima Nepomuceno, Francisco Gorgônio da Nóbrega, Gutemberg Delfino de Sousa, Fernando Hercos Valicente, Maria Helena Bodanese Zanettini
The OX513A strain of Aedes aegypti, which was developed by the British company Oxitec, expresses a self-limiting transgene that prevents larvae from developing to adulthood. In April 2014, the Brazilian National Technical Commission on Biosafety completed a risk assessment of OX513A and concluded that the strain did not present new biological risks to humans or the environment and could be released in Brazil. At that point, Brazil became the first country to approve the unconstrained release of a genetically modified mosquito...
October 1, 2016: Bulletin of the World Health Organization
https://www.readbyqxmd.com/read/27832074/use-of-the-health-belief-model-for-the-assessment-of-public-knowledge-and-household-preventive-practices-in-karachi-pakistan-a-dengue-endemic-city
#19
Taranum Ruba Siddiqui, Saima Ghazal, Safia Bibi, Waquaruddin Ahmed, Shaimuna Fareeha Sajjad
BACKGROUND: Prevention is most effective in reducing dengue infection risk, especially in endemic countries like Pakistan. Evaluation of public awareness and health beliefs regarding dengue fever (DF) is important for devising disease control strategies. This study assessed dengue knowledge, health beliefs, and preventive practices against DF in different socioeconomic groups of Karachi, Pakistan. METHODOLOGY: In this community-based cross-sectional study, 6 randomly selected towns were visited, 2 persons (man and woman) per household were interviewed using a structured questionnaire, and household practices were observed...
November 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27829655/cuba-time-to-expand-health-in-all-policies
#20
Pastor Castell-Florit Serrate, Pedro Más-Bermejo
The Adelaide Statement on Health in All Policies (2010), lays out equity-based principles designed to guide policymakers on incorporating health and well-being components into the development, implementation and evaluation of policy and practice while moving towards shared governance at all levels-local, regional, national and international. Special emphasis is placed on cross-sector coordination to achieve policy goals, while improving health and well-being for all.[1] In Cuba's case, experience in disaster preparedness, particularly for hurricanes, has shown good cross-sector coordination...
October 2016: MEDICC Review
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