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https://www.readbyqxmd.com/read/29774299/spatial-distribution-and-cluster-analysis-of-dengue-using-self-organizing-maps-in-andhra-pradesh-india-2011-2013
#1
Srinivasa Rao Mutheneni, Rajasekhar Mopuri, Suchithra Naish, Deepak Gunti, Suryanarayana Murty Upadhyayula
Background and objectives: Dengue is an emerging and re-emerging infectious disease, transmitted by mosquitoes. It is mostly prevalent in tropical and sub-tropical regions of the world, particularly, in Asia-Pacific region. To understand the epidemiology and spatial distribution of dengue, a retrospective surveillance study was conducted in the state of Andhra Pradesh, India during 2011-2013. Material and methods: District-wise disease endemicity levels were mapped through geographical information system (GIS) tools...
February 2018: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29772885/geographical-distribution-and-spatio-temporal-patterns-of-hospitalization-due-to-dengue-infection-at-a-leading-specialist-hospital-in-malaysia
#2
Gary K K Low, Panayoti Papapreponis, Ridzuan M Isa, Seng Chiew Gan, Hui Yee Chee, Kian Keong Te, Nadia M Hatta
Increasing numbers of dengue infection worldwide have led to a rise in deaths due to complications caused by this disease. We present here a cross-sectional study of dengue patients who attended the Emergency and Trauma Department of Ampang Hospital, one of Malaysia's leading specialist hospitals. The objective was to search for potential clustering of severe dengue, in space and/or time, among the annual admissions with the secondary objective to describe the spatio-temporal pattern of all dengue cases admitted to this hospital...
May 7, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29767504/motion-based-immunological-detection-of-zika-virus-using-pt-nanomotors-and-a-cellphone
#3
Mohamed Shehata Draz, Nivethitha Kota Lakshminaraasimulu, Sanchana Krishnakumar, Dheerendranath Battalapalli, Anish Vasan, Manoj Kumar Kanakasabapathy, Aparna Sreeram, Shantanu Kallakuri, Prudhvi Thirumalaraju, Yudong Li, Stephane Hua, Xu G Yu, Daniel R Kuritzkes, Hadi Shafiee
Zika virus (ZIKV) infection is an emerging pandemic threat to humans that can be fatal in newborns. Advances in digital health systems and nanoparticles can facilitate the development of sensitive and portable detection technologies for timely management of emerging viral infections. Here we report a nanomotor-based bead-motion cellphone (NBC) system for the immunological detection of ZIKV. The presence of virus in a testing sample results in the accumulation of platinum (Pt)-nanomotors on the surface of beads, causing their motion in H2 O2 solution...
May 16, 2018: ACS Nano
https://www.readbyqxmd.com/read/29764403/meteorological-factors-affecting-dengue-incidence-in-davao-philippines
#4
Jesavel A Iguchi, Xerxes T Seposo, Yasushi Honda
BACKGROUND: Dengue fever is a major public health concern in the Philippines, and has been a significant cause of hospitalizations and deaths among young children. Previous literature links climate change to dengue, and with increasingly unpredictable changing climate patterns, there is a need to understand how these meteorological variables affect dengue incidence in a highly endemic area. METHODS: Weekly dengue incidences (2011-2015) in Davao Region, Philippines were obtained from the Department of Health...
May 15, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29761622/host-heme-oxygenase-1-friend-or-foe-in-tackling-pathogens
#5
REVIEW
Nisha Singh, Zeeshan Ahmad, Navin Baid, Ashwani Kumar
Infectious diseases are a major challenge in management of human health worldwide. Recent literature suggests that host immune system could be modulated to ameliorate the pathogenesis of infectious disease. Heme oxygenase (HMOX1) is a key regulator of cellular signaling and it could be modulated using pharmacological reagents. HMOX1 is a cytoprotective enzyme that degrades heme to generate carbon monoxide (CO), biliverdin, and molecular iron. CO and biliverdin (or bilirubin derived from it) can restrict the growth of a few pathogens...
May 14, 2018: IUBMB Life
https://www.readbyqxmd.com/read/29757507/mosquito-traps-for-urban-surveillance-collection-efficacy-and-potential-for-use-by-citizen-scientists
#6
Mathieu Bazin, Craig R Williams
Mosquito-borne diseases are a pervasive public health problem on a global scale, and effective management of them requires well-designed surveillance programs for both vectors and pathogens. Mosquito traps are a common component of such programs, and their reach can be expanded by engaging citizen scientists. In this study in a southern Australian city, we compared the mosquito collection efficacy of two types of traps and assessed their suitability for use in citizen science programs. BG Sentinels and BG Gravid Aedes Trap (BG-GAT) traps both collected Aedes and Culex species in similar proportions, albeit with the former collecting approximately nine times as many mosquitoes...
June 2018: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/29751486/current-strategies-for-inhibition-of-chikungunya-infection
#7
REVIEW
Bharat Bhusan Subudhi, Soma Chattopadhyay, Priyadarsee Mishra, Abhishek Kumar
Increasing incidences of Chikungunya virus (CHIKV) infection and co-infections with Dengue/Zika virus have highlighted the urgency for CHIKV management. Failure in developing effective vaccines or specific antivirals has fuelled further research. This review discusses updated strategies of CHIKV inhibition and provides possible future directions. In addition, it analyzes advances in CHIKV lifecycle, drug-target development, and potential hits obtained by in silico and experimental methods. Molecules identified with anti-CHIKV properties using traditional/rational drug design and their potential to succeed in subsequent stages of drug development have also been discussed...
May 3, 2018: Viruses
https://www.readbyqxmd.com/read/29726966/pattern-of-dengue-virus-infections-in-adult-patients-from-sri-lanka
#8
Umesh Jayarajah, Pradeep K de Silva, Priyankara Jayawardana, Upul Dissanayake, Aruna Kulatunga, Harshini Fernando, Lakshika Perera, Vibhavee Kannangara, Champika Udayangani, Ranga Peiris, Shuaib Faizer, Pamodh Yasawardene, Ishan de Zoysa, Suranjith L Seneviratne
Background: Sri Lanka experienced its largest dengue epidemic in 2017. This study describes the disease pattern of adult dengue patients from two hospitals in Sri Lanka. Methods: Demographic, clinical and investigation findings of adult dengue patients admitted to the two hospitals from June to August 2017 were collected and analysed. Results: A total of 1167 patients (777 males [66.2%], mean age 32.9 y) were studied. There were 775 (66.4%) patients with dengue fever (DF), 334 (28...
May 2, 2018: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29712956/parallel-evolution-of-vgsc-mutations-at-domains-is6-iis6-and-iiis6-in-pyrethroid-resistant-aedes-aegypti-from-mexico
#9
Karla Saavedra-Rodriguez, Farah Vera Maloof, Corey L Campbell, Julian Garcia-Rejon, Audrey Lenhart, Patricia Penilla, Americo Rodriguez, Arturo Acero Sandoval, Adriana E Flores, Gustavo Ponce, Saul Lozano, William C Black
Aedes aegypti is the primary urban mosquito vector of viruses causing dengue, Zika and chikungunya fevers -for which vaccines and effective pharmaceuticals are still lacking. Current strategies to suppress arbovirus outbreaks include removal of larval-breeding sites and insecticide treatment of larval and adult populations. Insecticidal control of Ae. aegypti is challenging, due to a recent rapid global increase in knockdown-resistance (kdr) to pyrethroid insecticides. Widespread, heavy use of pyrethroid space-sprays has created an immense selection pressure for kdr, which is primarily under the control of the voltage-gated sodium channel gene (vgsc)...
April 30, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29709965/a-multicenter-study-of-clinical-presentations-and-predictive-factors-for-severe-manifestation-of-dengue-in-adults
#10
Saranya Temprasertrudee, Vipa Thanachartwet, Varunee Desakorn, Jiraporn Keatkla, Wasun Chantratita, Sasisopin Kiertiburanakul
Severe dengue is more prevalent in adults than in children. Our objectives were to determine the clinical presentations of dengue in adults and to identify predictive factors for severe dengue. A retrospective cohort study was performed in adults with dengue, as confirmed by positive NS1 antigen. Patients were classified into non-severe and severe dengue. A total of 357 patients were enrolled; 45.4% were male, with median (interquartile range, IQR) age of 27.9 (21.8-43.5) years. In all, 28.3% of patients had warning signs and 10...
April 27, 2018: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29692583/effect-of-introduction-of-single-donor-apheresis-platelets-in-dengue-management-a-comparative-analysis-of-two-consecutive-dengue-epidemics
#11
Sonam Kansay, Harinder Singh
BACKGROUND: The frequency of dengue outbreak is increasing in Southeast Asian countries these days and since there are no specific drugs against the dengue virus; therefore, treatment consists of mainly symptomatic and supportive care. AIMS: Platelet transfusion forms one of the major parts of treatment therapy in dengue; therefore, this study was initiated to elicit the effect of introduction of single-donor apheresis platelets (SDAPs) in dengue management. SETTINGS AND DESIGN: This is a retrospective study conducted on 622 clinically suspected cases of dengue infection who received platelet transfusions between August 2013 and December 2015 in a teaching hospital of North India...
April 2018: Journal of Laboratory Physicians
https://www.readbyqxmd.com/read/29690906/a-forecasting-model-for-dengue-incidence-in-the-district-of-gampaha-sri-lanka
#12
Gayan P Withanage, Sameera D Viswakula, Y I Nilmini Silva Gunawardena, Menaka D Hapugoda
BACKGROUND: Dengue is one of the major health problems in Sri Lanka causing an enormous social and economic burden to the country. An accurate early warning system can enhance the efficiency of preventive measures. The aim of the study was to develop and validate a simple accurate forecasting model for the District of Gampaha, Sri Lanka. Three time-series regression models were developed using monthly rainfall, rainy days, temperature, humidity, wind speed and retrospective dengue incidences over the period January 2012 to November 2015 for the District of Gampaha, Sri Lanka...
April 24, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29685158/ebolavirus-diagnosis-made-simple-comparable-and-faster-than-molecular-detection-methods-preparing-for-the-future
#13
Ameh S James, Shawn Todd, Nina M Pollak, Glenn A Marsh, Joanne Macdonald
BACKGROUND: The 2014/2015 Ebolavirus outbreak resulted in more than 28,000 cases and 11,323 reported deaths, as of March 2016. Domestic transmission of the Guinea strain associated with the outbreak occurred mainly in six African countries, and international transmission was reported in four countries. Outbreak management was limited by the inability to rapidly diagnose infected cases. A further fifteen countries in Africa are predicted to be at risk of Ebolavirus outbreaks in the future as a consequence of climate change and urbanization...
April 23, 2018: Virology Journal
https://www.readbyqxmd.com/read/29657372/targeted-interventions-in-critically-ill-children-with-severe-dengue
#14
Suchitra Ranjit, Gokul Ramanathan, Balasubramaniam Ramakrishnan, Niranjan Kissoon
Background: The World Health Organization guidelines provide suggestions on early recognition and treatment of severe dengue (SD); however, mortality in this group can be high and is related both to disease severity and the treatment complications. Subjects and Methods: In this prospective observational study, we report our results where standard therapy (ST) was enhanced by Intensive Care Unit (ICU) supportive measures that have proven beneficial in other conditions that share similar pathophysiology of capillary leak and fluid overload...
March 2018: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/29608170/multiplexed-isothermal-amplification-based-diagnostic-platform-to-detect-zika-chikungunya-and-dengue-1
#15
Ozlem Yaren, Barry W Alto, Kevin M Bradley, Patricia Moussatche, Lyudmyla Glushakova, Steven A Benner
Zika, dengue, and chikungunya viruses are transmitted by mosquitoes, causing diseases with similar patient symptoms. However, they have different downstream patient-to-patient transmission potentials, and require very different patient treatments. Thus, recent Zika outbreaks make it urgent to develop tools that rapidly discriminate these viruses in patients and trapped mosquitoes, to select the correct patient treatment, and to understand and manage their epidemiology in real time. Unfortunately, current diagnostic tests, including those receiving 2016 emergency use authorizations and fast-track status, detect viral RNA by reverse transcription polymerase chain reaction (RT-PCR), which requires instrumentation, trained users, and considerable sample preparation...
March 13, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29607357/simultaneous-detection-and-serotyping-of-dengue-infection-using-single-tube-multiplex-cdc-dengue-real-time-rt-pcr-from-india
#16
Shashi Sharma, Kundan Tandel, Surabhi Danwe, Puneet Bhatt, P K Dash, Praveer Ranjan, K R Rathi, Rajiv Mohan Gupta, M M Parida
Four antigenically different dengue virus serotypes (DENV-1, DENV-2, DENV-3 and DENV-4) are known to cause infections in humans. Some of these are known to cause more severe disease than the others. Chances for developing Dengue hemorrhagic fever-dengue shock syndrome (DHF-DSS) increases significantly with history of previous infection with one of the four serotypes. Therefore, early diagnosis, serotyping and providing early warning of dengue fever epidemics to concerned authorities becomes very important for better patient outcome and to curb the rapid spread in the community...
March 2018: Virusdisease
https://www.readbyqxmd.com/read/29606534/timely-diagnosis-use-of-information-technology-and-mosquito-control-prevents-dengue-outbreaks-experience-from-central-india
#17
Pradip V Barde, Neeta Mishra, Neeru Singh
BACKGROUND: Dengue is most important arboviral disease spreading to newer areas. Timely diagnosis and mosquito control are only ways to prevent outbreaks; however there are very few studies demonstrating this hypothesis. METHODS: During this study laboratory diagnosis for Dengue was provided to patient and the programme manager on the same day of receipt of the sample. The mobile number of the patient/kin of patient was used to contact patient and reach their address to conduct vector control within 24h of case detection...
March 29, 2018: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/29601580/pyrethroid-resistance-persists-after-ten-years-without-usage-against-aedes-aegypti-in-governmental-campaigns-lessons-from-s%C3%A3-o-paulo-state-brazil
#18
Maria de Lourdes Macoris, Ademir Jesus Martins, Maria Teresa Macoris Andrighetti, José Bento Pereira Lima, Denise Valle
BACKGROUND: Aedes aegypti, vector of dengue, chikungunya and Zika viruses, is found at high densities in tropical urban areas. The dissemination of this vector is partially the consequence of failures in current vector control methods, still mainly relying upon insecticides. In the State of São Paulo (SP), Brazil, public health managers employed pyrethroids against Ae. aegypti adults from 1989 to 2000, when a robust insecticide resistance monitoring system detected resistance to pyrethroids in several Ae...
March 30, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29588874/clinical-and-laboratory-profile-of-zika-and-dengue-infected-patients-lessons-learned-from-the-co-circulation-of-dengue-zika-and-chikungunya-in-brazil
#19
Elzinandes Leal Azeredo, Flavia Barreto Dos Santos, Luciana Santos Barbosa, Thiara Manuele Alves Souza, Jessica Badolato-Corrêa, Juan Camilo Sánchez-Arcila, Priscila Conrado Guerra Nunes, Luzia Maria de-Oliveira-Pinto, Ana Maria de Filippis, Márcia Dal Fabbro, Izilyanne Hoscher Romanholi, Rivaldo Venancio da Cunha
BACKGROUND: The current triple epidemic caused by dengue, zika and chikungunya constitutes a serious health problem in Brazil. The aim of this study was to investigate acute samples (up to the 7 days of symptoms) from patients presenting acute fever syndrome suspected as arboviral infection and characterize the clinical and laboratorial profile during the co-circulation of dengue, zika and chikungunya in Campo Grande, Mato Grosso do Sul (MS), midwest region of Brazil. METHODS: All suspected cases (n=134) were tested by using serological and molecular diagnostic tests including DENV, ZIKV and CHIKV RT-PCR, Dengue nonstructural protein 1 (NS1) antigen capture ELISA, anti- DENV IgM ELISA and anti-CHIKV IgM ELISA...
February 15, 2018: PLoS Currents
https://www.readbyqxmd.com/read/29581051/febrile-illness-in-asia-gaps-in-epidemiology-diagnosis-management-for-informing-health-policy
#20
REVIEW
Poojan Shrestha, Tamalee Roberts, Anousin Homsana, Tin Ohn Myat, John A Crump, Yoel Lubell, Paul N Newton
BACKGROUND: There is increasing evidence on the aetiology and management of fevers in Asia, the importance of which has risen with declines in malaria incidence. AIMS: To conduct a narrative review of the epidemiology and management of fevers in South and South-East Asia and to highlight gaps in our knowledge that impair evidence-based health policy decisions. SOURCES: A narrative review of papers published since 2012 of developments in fever epidemiology, diagnosis and treatment in South and South-East Asia...
March 23, 2018: Clinical Microbiology and Infection
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