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https://www.readbyqxmd.com/read/29452109/dengue-infection-in-patients-with-febrile-illness-and-its-relationship-to-climate-factors-a-case-study-in-the-city-of-jeddah-saudi-arabia-for-the-period-2010-2014
#1
Anwar M Hashem, Turki Abujamel, Rowa Alhabbab, Mansour Almazroui, Esam I Azhar
Dengue is an important global arboviral disease with expanding geographical range. It is a major public health concern in Western Saudi Arabia since its first detection in the city of Jeddah in 1994. In this retrospective study, we examined dengue incidence among febrile patients suspected for acute dengue infection at King Abdulaziz University Hospital, Jeddah from 2010 to 2014 and we tried to determine the effect of climate factors on dengue incidence in the city. Acute dengue incidence rates among clinically suspected patients showed annual variation with a range from 29...
February 13, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29435366/zika-chikungunya-and-dengue-the-causes-and-threats-of-new-and-re-emerging-arboviral-diseases
#2
REVIEW
Enny S Paixão, Maria Gloria Teixeira, Laura C Rodrigues
The recent emergence and re-emergence of viral infections transmitted by vectors-Zika, chikungunya, dengue, Japanese encephalitis, West Nile, yellow fever and others-is a cause for international concern. Using as examples Zika, chikungunya and dengue, we summarise current knowledge on characteristics of the viruses and their transmission, clinical features, laboratory diagnosis, burden, history, possible causes of the spread and the expectation for future epidemics. Arboviruses are transmitted by mosquitoes, are of difficult diagnosis, can have surprising clinical complications and cause severe burden...
2018: BMJ Global Health
https://www.readbyqxmd.com/read/29432457/the-spectrum-of-neurological-disease-associated-with-zika-and-chikungunya-viruses-in-adults-in-rio-de-janeiro-brazil-a-case-series
#3
Ravi Mehta, Cristiane Nascimento Soares, Raquel Medialdea-Carrera, Mark Ellul, Marcus Tulius Texeira da Silva, Anna Rosala-Hallas, Marcia Rodrigues Jardim, Girvan Burnside, Luciana Pamplona, Maneesh Bhojak, Radhika Manohar, Gabriel Amorelli Medeiros da Silva, Marcus Vinicius Adriano, Patricia Brasil, Rita Maria Ribeiro Nogueira, Carolina Cardoso Dos Santos, Lance Turtle, Patricia Carvalho de Sequeira, David W Brown, Michael J Griffiths, Ana Maria Bispo de Filippis, Tom Solomon
BACKGROUND: During 2015-16 Brazil experienced the largest epidemic of Zika virus ever reported. This arthropod-borne virus (arbovirus) has been linked to Guillain-Barré syndrome (GBS) in adults but other neurological associations are uncertain. Chikungunya virus has caused outbreaks in Brazil since 2014 but associated neurological disease has rarely been reported here. We investigated adults with acute neurological disorders for Zika, chikungunya and dengue, another arbovirus circulating in Brazil...
February 12, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29425203/neutralization-of-antibody-enhanced-dengue-infection-by-vis513-a-pan-serotype-reactive-monoclonal-antibody-targeting-domain-iii-of-the-dengue-e-protein
#4
Yadunanda Budigi, Eugenia Z Ong, Luke N Robinson, Li Ching Ong, Kirk J Rowley, Alexander Winnett, Hwee Cheng Tan, Sven Hobbie, Zachary Shriver, Gregory J Babcock, Sylvie Alonso, Eng Eong Ooi
Dengue virus (DENV) infection imposes enormous health and economic burden worldwide with no approved treatment. Several small molecules, including lovastatin, celgosivir, balapiravir and chloroquine have been tested for potential anti-dengue activity in clinical trials; none of these have demonstrated a protective effect. Recently, based on identification and characterization of cross-serotype neutralizing antibodies, there is increasing attention on the potential for dengue immunotherapy. Here, we tested the ability of VIS513, an engineered cross-neutralizing humanized antibody targeting the DENV E protein domain III, to overcome antibody-enhanced infection and high but brief viremia, which are commonly encountered in dengue patients, in various in vitro and in vivo models...
February 9, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29395729/antiviral-immunity-and-virus-mediated-antagonism-in-disease-vector-mosquitoes
#5
REVIEW
Glady Hazitha Samuel, Zach N Adelman, Kevin M Myles
More than 100 pathogens, spanning multiple virus families, broadly termed 'arthropod-borne viruses (arboviruses)' have been associated with human and/or animal diseases. These viruses persist in nature through transmission cycles that involve alternating replication in susceptible vertebrate and invertebrate hosts. Collectively, these viruses are among the greatest burdens to global health, due to their widespread prevalence, and the severe morbidity and mortality they cause in human and animal hosts. Specific examples of mosquito-borne pathogens include Zika virus (ZIKV), West Nile virus (WNV), dengue virus serotypes 1-4 (DENV 1-4), Japanese encephalitis virus (JEV), yellow fever virus (YFV), chikungunya virus (CHIKV), and Rift Valley fever virus (RVFV)...
January 29, 2018: Trends in Microbiology
https://www.readbyqxmd.com/read/29375803/mosquito-vector-associated-microbiota-metabarcoding-bacteria-and-eukaryotic-symbionts-across-habitat-types-in-thailand-endemic-for-dengue-and-other-arthropod-borne-diseases
#6
Panpim Thongsripong, James Angus Chandler, Amy B Green, Pattamaporn Kittayapong, Bruce A Wilcox, Durrell D Kapan, Shannon N Bennett
Vector-borne diseases are a major health burden, yet factors affecting their spread are only partially understood. For example, microbial symbionts can impact mosquito reproduction, survival, and vectorial capacity, and hence affect disease transmission. Nonetheless, current knowledge of mosquito-associated microbial communities is limited. To characterize the bacterial and eukaryotic microbial communities of multiple vector species collected from different habitat types in disease endemic areas, we employed next-generation 454 pyrosequencing of 16S and 18S rRNA amplicon libraries, also known as metabarcoding...
January 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29360474/a-novel-flavanone-derivative-inhibits-dengue-virus-fusion-and-infectivity
#7
Pimsiri Srivarangkul, Wanchalerm Yuttithamnon, Aphinya Suroengrit, Saran Pankaew, Kowit Hengprasartporn, Thanyada Rungrotmongkol, Preecha Phuwaphriasirisarn, Kiat Ruxrungtham, Siwaporn Boonyasuppayakorn
Dengue infection is a global burden affecting millions of world population. Previous studies indicated that flavanones were potential dengue virus inhibitors. We discovered that a novel flavanone derivative, 5-hydroxy-7-methoxy-6-methylflavanone (FN5Y), inhibited DENV2 pH-dependent fusion in cell-based system with strong binding efficiency to DENV envelope protein at K (P83, L107, K128, L198), K' (T48, E49, A50, L198, Q200, L277), X' (Y138, V354, I357), and Y' (V97, R99, N103, K246) by molecular dynamic simulation...
January 19, 2018: Antiviral Research
https://www.readbyqxmd.com/read/29358421/evaluating-dengue-burden-in-africa-in-passive-fever-surveillance-and-seroprevalence-studies-protocol-of-field-studies-of-the-dengue-vaccine-initiative
#8
Jacqueline Kyungah Lim, Mabel Carabali, Jung-Seok Lee, Kang-Sung Lee, Suk Namkung, Sl-Ki Lim, Valéry Ridde, Jose Fernandes, Bertrand Lell, Sultani Hadley Matendechero, Meral Esen, Esther Andia, Noah Oyembo, Ahmed Barro, Emmanuel Bonnet, Sammy M Njenga, Selidji Todagbe Agnandji, Seydou Yaro, Neal Alexander, In-Kyu Yoon
INTRODUCTION: Dengue is an important and well-documented public health problem in the Asia-Pacific and Latin American regions. However, in Africa, information on disease burden is limited to case reports and reports of sporadic outbreaks, thus hindering the implementation of public health actions for disease control. To gather evidence on the undocumented burden of dengue in Africa, epidemiological studies with standardised methods were launched in three locations in Africa. METHODS AND ANALYSIS: In 2014-2017, the Dengue Vaccine Initiative initiated field studies at three sites in Ouagadougou, Burkina Faso; Lambaréné, Gabon and Mombasa, Kenya to obtain comparable incidence data on dengue and assess its burden through standardised hospital-based surveillance and community-based serological methods...
January 21, 2018: BMJ Open
https://www.readbyqxmd.com/read/29352633/current-concerns-and-perspectives-on-zika-virus-co-infection-with-arboviruses-and-hiv
#9
REVIEW
Hussin A Rothan, Mehdi R M Bidokhti, Siddappa N Byrareddy
Dissemination of vector-borne viruses, such as Zika virus (ZIKV), in tropical and sub-tropical regions has a complicated impact on the immunopathogenesis of other endemic viruses such as dengue virus (DENV), chikungunya virus (CHIKV) and human immunodeficiency virus (HIV). The consequences of the possible co-infections with these viruses have specifically shown significant impact on the treatment and vaccination strategies. ZIKV is a mosquito-borne flavivirus from African and Asian lineages that causes neurological complications in infected humans...
January 16, 2018: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29335021/seroprevalence-of-dengue-among-healthy-adults-in-a-rural-community-in-southern-malaysia-a-pilot-study
#10
Amreeta Dhanoa, Sharifah Syed Hassan, Nowrozy Kamar Jahan, Daniel D Reidpath, Quek Kia Fatt, Mohtar Pungut Ahmad, Cheong Yuet Meng, Lau Wee Ming, Anuar Zaini Zain, Maude Elvira Phipps, Iekhsan Othman, Aman Bin Rabu, Rowther Sirajudeen, Ahmad Abdul Basitz Ahmad Fatan, Faidzal Adlee Ghafar, Hamdan Bin Ahmad, Pascale Allotey
BACKGROUND: The frequency and magnitude of dengue epidemics continue to increase exponentially in Malaysia, with a shift in the age range predominance toward adults and an expansion to rural areas. Despite this, information pertaining to the extent of transmission of dengue virus (DENV) in the rural community is lacking. This community-based pilot study was conducted to establish DENV seroprevalence amongst healthy adults in a rural district in Southern Malaysia, and to identify influencing factors...
January 16, 2018: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/29327526/dengue-induced-hepatic-injury
#11
Darshil Shah, Pravin Rathi
Dengue has a significant impact on the disease burden in the population residing in tropical countries. It is transmitted by the bite of Aedes mosquito. The virus have got some hepatotoxic effects. Most of the cases are asymptomatic. However, it should be considered as one of the causes of Acute Liver Failure in endemic countries. Our article focuses on the pathogenesis, manifestations, investigations and, the treatment options for dengue related hepatic dysfunction.
December 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29283327/genetically-modified-aedes-aegypti-to-control-dengue-a-review
#12
Muhammad Qsim, Usman Ali Ashfaq, Muhammad Zubair Yousaf, Muhammad Shareef Masoud, Ijaz Rasul, Namrah Noor, Azfar Hussain
Dengue is an acute infectious disease of viral etiology characterized by lymphadenopathy, leucopenia, headache, biphasic fever, pain in various parts of the body, rashes, and extreme physical weakness. It is a vector-borne disease caused by a positive-stranded RNA virus of the family Flaviviridae, genus Flavivirus. Dengue inflicts a significant health, economic, and social burden on populations of endemic areas. Dengue virus is transmitted to humans by the mosquito vector Aedes aegypti. Vaccines against dengue viruses have been claimed to be developed, but as yet no effective treatment is available...
2017: Critical Reviews in Eukaryotic Gene Expression
https://www.readbyqxmd.com/read/29259329/dengue-viruses-in-papua-new-guinea-evidence-of-endemicity-and-phylogenetic-variation-including-the-evolution-of-new-genetic-lineages
#13
Peter R Moore, Andrew F van den Hurk, John S Mackenzie, Alyssa T Pyke
Dengue is the most common cause of mosquito-borne viral disease in humans, and is endemic in more than 100 tropical and subtropical countries. Periodic outbreaks of dengue have been reported in Papua New Guinea (PNG), but there is only limited knowledge of its endemicity and disease burden. To help elucidate the status of the dengue viruses (DENVs) in PNG, we performed envelope (E) gene sequencing of DENV serotypes 1-4 (DENV 1-4) obtained from infected patients who traveled to Australia or from patients diagnosed during local DENV transmission events between 2001 and 2016...
December 20, 2017: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29188134/assessing-the-prevalence-of-risk-factors-for-neglected-tropical-diseases-in-brazos-county-texas
#14
Jennifer Horney, Daniel Goldberg, Tracy Hammond, Kahler Stone, Seth Smitherman
Introduction: Although more than one billion people live at risk of neglected tropical diseases (NTDs) in areas of Asia, sub-Saharan Africa, and Latin America, the degree to which they burden countries like the U.S. is unclear. Even though many NTDs such as dengue, leishmaniasis, and Chagas disease are typically not endemic to the U.S., the possibility of their emergence is noteworthy, especially in states like Texas with high levels of poverty, large immigrant populations, geographic proximity to endemic areas, and a climate amenable to the vectors for these diseases...
October 4, 2017: PLoS Currents
https://www.readbyqxmd.com/read/29183717/using-wolbachia-for-dengue-control-insights-from-modelling
#15
REVIEW
Ilaria Dorigatti, Clare McCormack, Gemma Nedjati-Gilani, Neil M Ferguson
Dengue is the most common arboviral infection of humans, responsible for a substantial disease burden across the tropics. Traditional insecticide-based vector-control programmes have limited effectiveness, and the one licensed vaccine has a complex and imperfect efficacy profile. Strains of the bacterium Wolbachia, deliberately introduced into Aedes aegyptimosquitoes, have been shown to be able to spread to high frequencies in mosquito populations in release trials, and mosquitoes infected with these strains show markedly reduced vector competence...
November 25, 2017: Trends in Parasitology
https://www.readbyqxmd.com/read/29145452/behavioral-climatic-and-environmental-risk-factors-for-zika-and-chikungunya-virus-infections-in-rio-de-janeiro-brazil-2015-16
#16
Trevon L Fuller, Guilherme Calvet, Camila Genaro Estevam, Jussara Rafael Angelo, Gbenga J Abiodun, Umme-Aiman Halai, Bianca De Santis, Patricia Carvalho Sequeira, Eliane Machado Araujo, Simone Alves Sampaio, Marco Cesar Lima de Mendonça, Allison Fabri, Rita Maria Ribeiro, Ryan Harrigan, Thomas B Smith, Claudia Raja Gabaglia, Patrícia Brasil, Ana Maria Bispo de Filippis, Karin Nielsen-Saines
The burden of arboviruses in the Americas is high and may result in long-term sequelae with infants disabled by Zika virus infection (ZIKV) and arthritis caused by infection with Chikungunya virus (CHIKV). We aimed to identify environmental drivers of arbovirus epidemics to predict where the next epidemics will occur and prioritize municipalities for vector control and eventual vaccination. We screened sera and urine samples (n = 10,459) from residents of 48 municipalities in the state of Rio de Janeiro for CHIKV, dengue virus (DENV), and ZIKV by molecular PCR diagnostics...
2017: PloS One
https://www.readbyqxmd.com/read/29138300/high-zika-virus-seroprevalence-in-salvador-northeastern-brazil-limits-the-potential-for-further-outbreaks
#17
Eduardo Martins Netto, Andres Moreira-Soto, Celia Pedroso, Christoph Höser, Sebastian Funk, Adam J Kucharski, Alexandra Rockstroh, Beate M Kümmerer, Gilmara Souza Sampaio, Estela Luz, Sara Nunes Vaz, Juarez Pereira Dias, Fernanda Anjos Bastos, Renata Cabral, Thomas Kistemann, Sebastian Ulbert, Xavier de Lamballerie, Thomas Jaenisch, Oliver J Brady, Christian Drosten, Manoel Sarno, Carlos Brites, Jan Felix Drexler
During 2015 to 2016, Brazil reported more Zika virus (ZIKV) cases than any other country, yet population exposure remains unknown. Serological studies of ZIKV are hampered by cross-reactive immune responses against heterologous viruses. We conducted serosurveys for ZIKV, dengue virus (DENV), and Chikungunya virus (CHIKV) in 633 individuals prospectively sampled during 2015 to 2016, including microcephaly and non-microcephaly pregnancies, HIV-infected patients, tuberculosis patients, and university staff in Salvador in northeastern Brazil using enzyme-linked immunosorbent assays (ELISAs) and plaque reduction neutralization tests...
November 14, 2017: MBio
https://www.readbyqxmd.com/read/29137663/patent-landscape-of-neglected-tropical-diseases-an-analysis-of-worldwide-patent-families
#18
Folahanmi Tomiwa Akinsolu, Vitor Nobre de Paiva, Samuel Santos Souza, Orsolya Varga
BACKGROUND: "Neglected Tropical Diseases" (NTDs) affect millions of people in Africa, Asia and South America. The two primary ways of strategic interventions are "preventive chemotherapy and transmission control" (PCT), and "innovative and intensified disease management" (IDM). In the last 5 years, phenomenal progress has been achieved. However, it is crucial to intensify research effort into NTDs, because of the emerging drug resistance. According to the World Health Organization (WHO), the term NTDs covers 17 diseases, namely buruli ulcer, Chagas disease, dengue, dracunculiasis, echinococcosis, trematodiasis, human African trypanosomiasis, leishmaniasis, leprosy, lymphatic filariasis, onchocerciasis, rabies, schistosomiasis, soil-transmitted helminthes, taeniasis, trachoma, and yaws...
November 14, 2017: Globalization and Health
https://www.readbyqxmd.com/read/29118655/the-burden-of-dengue-source-reduction-measures-and-serotype-patterns-in-myanmar-2011-to-2015-r2
#19
Pwint Mon Oo, Khin Thet Wai, Anthony D Harries, Hemant Deepak Shewade, Tin Oo, Aung Thi, Zaw Lin
Background: Myanmar is currently classified as a high burden dengue country in the Asian Pacific region. The Myanmar vector-borne diseases control (VBDC) program has collected data on dengue and source reduction measures since 1970, and there is a pressing need to collate, analyze, and interpret this information. The aim of this study was to describe the burden of hospital-based dengue disease, dengue control measures, and serotype patterns in Myanmar between 2011 and 2015. Methods: This was a cross-sectional study using annual records from the Dengue Fever/Dengue Hemorrhagic Fever Prevention and Control Project in Myanmar...
2017: Tropical Medicine and Health
https://www.readbyqxmd.com/read/29117180/the-additional-benefit-of-residual-spraying-and-insecticide-treated-curtains-for-dengue-control-over-current-best-practice-in-cuba-evaluation-of-disease-incidence-in-a-cluster-randomized-trial-in-a-low-burden-setting-with-intensive-routine-control
#20
Maria Eugenia Toledo, Veerle Vanlerberghe, Julio Popa Rosales, Mayelin Mirabal, Pedro Cabrera, Viviana Fonseca, Tania Gómez Padrón, Mirtha Pérez Menzies, Domingo Montada, Patrick Van der Stuyft
BACKGROUND: Aedes control interventions are considered the cornerstone of dengue control programmes, but there is scarce evidence on their effect on disease. We set-up a cluster randomized controlled trial in Santiago de Cuba to evaluate the entomological and epidemiological effectiveness of periodical intra- and peri-domiciliary residual insecticide (deltamethrin) treatment (RIT) and long lasting insecticide treated curtains (ITC). METHODOLOGY/PRINCIPAL FINDINGS: Sixty three clusters (around 250 households each) were randomly allocated to two intervention (RIT and ITC) and one control arm...
November 2017: PLoS Neglected Tropical Diseases
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