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dengue 2011

Daniel Barros de Castro, Vanderson Souza Sampaio, Bernardino Cláudio de Albuquerque, Rosemary Costa Pinto, Megumi Sadahiro, Ricardo Augusto Dos Passos, Cristiano Fernandes da Costa, José Ueleres Braga
BACKGROUND: Dengue is the most prevalent arboviral disease affecting humans. The frequency and magnitude of dengue epidemic have significantly increased over recent decades. This study aimed to identify dengue epidemic types and risk factors for the extensive epidemics that occurred in 2010-2011, across the municipalities of Amazonas state, Brazil. METHODS: Using an ecological approach, secondary data were obtained from the dengue fever surveillance system. Epidemic waves were classified according to three indices: duration, intensity, and coverage...
March 15, 2018: BMC Public Health
Arlinete S Medeiros, Diego M P Costa, Mário S D Branco, Daíse M C Sousa, Joelma D Monteiro, Sílvio P M Galvão, Paulo Roberto M Azevedo, José V Fernandes, Selma M B Jeronimo, Josélio M G Araújo
BACKGROUND: Vector control remains the sole effective method to prevent dengue virus (DENV) transmission, although a vaccine for dengue has recently become available and testing of its efficacy and coverage is being performed in multiple places. Entomological surveillance is a key factor in alerting authorities to possible outbreaks, but until now natural DENV infection of mosquito populations has been scarcely used as an early warning system to monitor fluctuating prevalence of infected mosquitoes...
2018: PloS One
Rebekah C Kading, Robert M Kityo, Eric C Mossel, Erin M Borland, Teddie Nakayiki, Betty Nalikka, Luke Nyakarahuka, Jeremy P Ledermann, Nicholas A Panella, Amy T Gilbert, Mary B Crabtree, Julian Kerbis Peterhans, Jonathan S Towner, Brian R Amman, Tara K Sealy, Stuart T Nichol, Ann M Powers, Julius J Lutwama, Barry R Miller
Introduction: A number of arboviruses have previously been isolated from naturally-infected East African bats, however the role of bats in arbovirus maintenance is poorly understood. The aim of this study was to investigate the exposure history of Ugandan bats to a panel of arboviruses. Materials and methods: Insectivorous and fruit bats were captured from multiple locations throughout Uganda during 2009 and 2011-2013. All serum samples were tested for neutralizing antibodies against West Nile virus (WNV), yellow fever virus (YFV), dengue 2 virus (DENV-2), Zika virus (ZIKV), Babanki virus (BBKV), and Rift Valley fever virus (RVFV) by plaque reduction neutralization test (PRNT)...
2018: Infection Ecology & Epidemiology
Suhendro Suwarto, Mohammad Jauharsyah Hidayat, Bing Widjaya
BACKGROUND: The Dengue Score is a model for predicting pleural effusion and/or ascites and uses the hematocrit (Hct), albumin concentration, platelet count and aspartate aminotransferase (AST) ratio as independent variables. As this metric has not been validated, we conducted a study to validate the Dengue Score and assess its clinical application. METHODS: A retrospective study was performed at a private hospital in Jakarta, Indonesia. Patients with dengue infection hospitalized from January 2011 through March 2016 were included...
February 23, 2018: BMC Infectious Diseases
Rhaquel de Morais Alves Barbosa Oliveira, Fernanda Montenegro de Carvalho Araújo, Luciano Pamplona de Góes Cavalcanti
OBJECTIVE: to characterize the entomological and epidemiological aspects of dengue epidemics occurred in Fortaleza, Ceará, Brazil, from 2001 to 2012. METHODS: descriptive study with data from the Information System for Notifiable Diseases (Sinan), Information System of Hospitalizations due to Yellow Fever and Dengue (2001-2009), National Program for Dengue Control (2010-2012), and Rapid Survey of Aedes aegypti Infestation Index, referring to the years in which the incidence of dengue was above 75%...
2018: Epidemiologia e Servicos de Saude: Revista do Sistema Unico de Saude do Brasil
Clément Tisseuil, Enkelejda Velo, Silvia Bino, Perparim Kadriaj, Kujtim Mersini, Ada Shukullari, Artan Simaku, Elton Rogozi, Beniamino Caputo, Els Ducheyne, Alessandra Della Torre, Paul Reiter, Marius Gilbert
The increasing spread of the Asian tiger mosquito, Aedes albopictus, in Europe and US raises public health concern due to the species competence to transmit several exotic human arboviruses, among which dengue, chikungunya and Zika, and urges the development of suitable modeling approach to forecast the spatial and temporal distribution of the mosquito. Here we developed a dynamical species distribution modeling approach forecasting Ae. albopictus eggs abundance at high spatial (0.01 degree WGS84) and temporal (weekly) resolution over 10 Balkan countries, using temperature times series of Modis data products and altitude as input predictors...
February 12, 2018: PLoS Neglected Tropical Diseases
Femke W Overbosch, Janke Schinkel, Ineke G Stolte, Maria Prins, Gerard J B Sonder
BACKGROUND: Dengue is increasing rapidly in endemic regions. Data on incidence among travelers to these areas are limited. Five prospective studies have been performed thus far, mainly among short-term travelers. OBJECTIVE: To obtain the attack and incidence rate (AR, IR) of dengue virus (DENV) infection among long-term travelers and identify associated risk factors. METHODS: A prospective study was performed among long-term travelers (12-52 weeks) attending the Public Health Service in Amsterdam...
2018: PloS One
Andrea Gloria-Soria, Andrew Lima, Diane D Lovin, Joanne M Cunningham, David W Severson, Jeffrey R Powell
An overwintering population of Aedes aegypti has been documented in the Capitol Hill neighborhood of Washington, DC, since 2011. Mitochondrial cytochrome oxidase I (mtCOI) sequence data presented in a previous study traced the origin to the New World. Here, we use microsatellite and SNP chip data along with more mitochondrial DNA (mtDNA) sequences on Washington Ae. aegypti samples and samples from potential sources to further narrow the origin of this population. Genetically, Washington Ae. aegypti are closest to populations in Florida, meaning this is the most likely source...
December 18, 2017: American Journal of Tropical Medicine and Hygiene
Zheyuan Ding, Chen Wu, Haocheng Wu, Qinbao Lu, Junfen Lin
To explore epidemiological characteristics of imported acute infectious diseases between 2011 and 2016 in Zhejiang province, China. Data of imported infectious diseases from 2011 to 2016 was collected from the China Information System for Disease Control and Prevention in Zhejiang province, and subsequently analyzed for epidemiological characteristics. A survey was conducted to investigate clinicians' abilities to diagnose these diseases in Zhejiang province. From 2011 to 2016, 1,241 cases of imported acute infectious disease were reported in Zhejiang province, including 1,078 malaria cases, 156 dengue cases, three chikungunya fever cases and four Zika cases...
December 18, 2017: American Journal of Tropical Medicine and Hygiene
C R Vicente, C S Pannuti, P R Urbano, A C Felix, C Cerutti Junior, K-H Herbinger, G Fröschl, C M Romano
The purpose of the present study was to reconstruct the phylogeny of dengue virus serotype 4 (DENV-4) that was circulating in Espírito Santo state, Brazil, in 2013 and 2014, and to discuss the epidemiological implications associated with this evolutionary hypothesis. Partial envelope gene of eight DENV-4 samples from Espírito Santo state were sequenced and aligned with 72 worldwide DENV-4 reference sequences from GenBank. A phylogenetic tree was reconstructed through Bayesian Inference and the Time of the Most Recent Common Ancestor was estimated...
January 2018: Epidemiology and Infection
Somia Iqtadar, Nabeel Akbar, Mehreen Mehmood, Sajid Abaidullah
Background and Objective: Dengue infection has evolved into an epidemic during last few years in Pakistan and has been associated with poor outcomes. Literature with respect to mortality risk factors in Dengue infection is not sufficient. This compelled us to conduct this study to find out major contributory factors to death in patients with dengue viral infection at one of Asia's ancient hospital setting with an aim to recognize complications at earliest and improve case management in future...
September 2017: Pakistan Journal of Medical Sciences Quarterly
Thikhumporn Sittivicharpinyo, Passorn Wonnapinij, Wunrada Surat
Dengue virus serotype 3 (DENV-3) can cause all forms of dengue diseases and is a predominant serotype in many countries. This serotype is classified into five genotypes: I-V. Genotypes I-III have widely spread throughout the world, whereas genotypes IV and V are rare. Despite the impact on the spread of dengue diseases, only a few studies have reported the characteristics of DENV present in mosquito vectors. Hence, this study aimed to identify DENV-3 genotypes and reveal genetic variation of this virus presented in field-caught mosquitoes collected from endemic areas in Thailand during 2011-2015...
January 15, 2018: Virus Research
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
José de Jesus Dias, Maria Dos Remédios Freitas Carvalho Branco, Rejane Christine de Sousa Queiroz, Alcione Miranda Dos Santos, Emnielle Pinto Borges Moreira, Maria do Socorro da Silva
Severe dengue cases have increased in Brazil since 2001, with the first records in Maranhão dating back to 2002. The aim of this study was to determine the prevalence of severe dengue cases by age group and the possible risk factors. This was a study of secondary data on dengue in residents of São Luís, Maranhão, Brazil, using probable cases notified to the National Mandatory Reporting System (SINAN) from 2002 to 2011. The diagnosis and classification of dengue were based on the Brazilian Ministry of Health criteria: dengue fever (DF), dengue hemorrhagic fever (DHF) and dengue fever with complications (DWC)...
November 6, 2017: Revista do Instituto de Medicina Tropical de São Paulo
Shahbaz Ahmad, Muhammad Asif, Ramzan Talib, Muhammad Adeel, Muhammad Yasir, Muhammad Hasanain Chaudary
BACKGROUND: Dengue fever is viral disease which spreads due to the bite of the Aedes aegypti mosquito. In recent years, it has affected around 40% population of the world. Its endemic flow has led to a large disease burden, in terms of human and financial resources. METHODS: Geographical Information Systems (GIS) are normally used to develop epidemiological thematic maps. This study explores the patterns and hotspots, associated with the catastrophic outbreak of dengue, in Punjab, in 2011...
November 2, 2017: Journal of Infection and Public Health
Laura B Talarico, Alana B Byrne, Sara Amarilla, Dolores Lovera, Cynthia Vázquez, Gustavo Chamorro, Patricio L Acosta, Adrián Ferretti, Mauricio T Caballero, Antonio Arbo, Fernando P Polack
BACKGROUND: Infection with dengue virus (DENV) produces a wide spectrum of clinical illness ranging from asymptomatic infection to mild febrile illness, and to severe forms of the disease. Type I interferons (IFNs) represent an initial and essential host defense response against viruses. DENV has been reported to trigger a robust type I IFN response; however, IFN-α/β profile in the progression of disease is not well characterized. OBJECTIVES AND STUDY DESIGN: In this context, we conducted a retrospective study assessing the circulating serum levels of type I IFNs and related cytokines at different phases of illness in children during the 2011 outbreak of DENV in Paraguay...
December 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
Mohammad Yazid Abdad, Raynal C Squires, Sebastien Cognat, Christopher John Oxenford, Frank Konings
Arboviruses continue to pose serious public health threats in the World Health Organization (WHO) Western Pacific Region. As such, laboratories need to be equipped for their accurate detection. In 2011, to ensure test proficiency, the WHO Regional Office for the Western Pacific piloted an external quality assessment (EQA) programme for arbovirus diagnostics. By 2016, it had grown into a global programme with participation of 96 laboratories worldwide, including 25 laboratories from 19 countries, territories and areas in the Region...
July 2017: Western Pacific Surveillance and Response Journal: WPSAR
Pi Guo, Tao Liu, Qin Zhang, Li Wang, Jianpeng Xiao, Qingying Zhang, Ganfeng Luo, Zhihao Li, Jianfeng He, Yonghui Zhang, Wenjun Ma
BACKGROUND: In China, dengue remains an important public health issue with expanded areas and increased incidence recently. Accurate and timely forecasts of dengue incidence in China are still lacking. We aimed to use the state-of-the-art machine learning algorithms to develop an accurate predictive model of dengue. METHODOLOGY/PRINCIPAL FINDINGS: Weekly dengue cases, Baidu search queries and climate factors (mean temperature, relative humidity and rainfall) during 2011-2014 in Guangdong were gathered...
October 2017: PLoS Neglected Tropical Diseases
Shabab Nasir, Farhat Jabeen, Sadia Abbas, Iram Nasir, Mustapha Debboun
BACKGROUND: The population of mosquitoes is mainly influenced by the biotic and abiotic factors. Although Aedes aegypti was reported until 1960's in the Punjab, Pakistan, the population has increased dramatically since 2009 and caused severe epidemics in 2011 due to heavy floods and rains. Thus, this study was carried out to know the effect of biotic and abiotic factors on the population of Aedes aegypti. METHODS: Mosquitoes were collected from fresh, sewage, and rain water ponds, fish ponds, rice fields, tyres, tree holes, and manmade storage containers present in and around residential homes twice during every winter (October-February), summer (March-June) and monsoon season (July-September) from marked rural areas...
March 2017: Journal of Arthropod-borne Diseases
Yamilka Díaz, Julio Cisneros, Hilda Guzmán, Paola Cordoba, Jean-Paul Carrera, Brechla Moreno, Rubing Chen, Juan Castillo Mewa, Lourdes García, Lizbeth Cerezo, Amelia Travassos da Rosa, Nathan D Gundacker, Blas Armién, Scott C Weaver, Nikos Vasilakis, Sandra López-Vergès, Robert Tesh
The circulation of the South-east Asian/American (AS/AM) dengue 2 virus (DENV-2) genotype in the Americas has been associated with a high rate of severe disease. From 1993, the year DENV was reintroduced in Panama, until 2011 there were 29 dengue-associated deaths, 17 of which occurred in 2011, the most severe outbreak with a case fatality rate (CFR) of 44% (17 deaths out of 38 severe dengue cases). During this outbreak DENV-2 was reintroduced into the country, whereas over the prior five years DENV-1 and -3 were predominant...
October 3, 2017: Acta Tropica
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