keyword
MENU ▼
Read by QxMD icon Read
search

Chikv

keyword
https://www.readbyqxmd.com/read/29673389/ecological-niche-modeling-of-aedes-mosquito-vectors-of-chikungunya-virus-in-southeastern-senegal
#1
Rebecca Richman, Diawo Diallo, Mawlouth Diallo, Amadou A Sall, Oumar Faye, Cheikh T Diagne, Ibrahima Dia, Scott C Weaver, Kathryn A Hanley, Michaela Buenemann
BACKGROUND: Chikungunya virus (CHIKV) originated in a sylvatic cycle of transmission between non-human animal hosts and vector mosquitoes in the forests of Africa. Subsequently the virus jumped out of this ancestral cycle into a human-endemic transmission cycle vectored by anthropophilic mosquitoes. Sylvatic CHIKV cycles persist in Africa and continue to spill over into humans, creating the potential for new CHIKV strains to enter human-endemic transmission. To mitigate such spillover, it is first necessary to delineate the distributions of the sylvatic mosquito vectors of CHIKV, to identify the environmental factors that shape these distributions, and to determine the association of mosquito presence with key drivers of virus spillover, including mosquito and CHIKV abundance...
April 19, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29672511/vector-competence-of-italian-aedes-albopictus-populations-for-the-chikungunya-virus-e1-226v
#2
Francesco Severini, Daniela Boccolini, Claudia Fortuna, Marco Di Luca, Luciano Toma, Antonello Amendola, Eleonora Benedetti, Giada Minelli, Roberto Romi, Giulietta Venturi, Giovanni Rezza, Maria Elena Remoli
BACKGROUND: Chikungunya virus (CHIKV) is an emerging arbovirus, belonging to the Togaviridae family, Alphavirus genus, transmitted by Aedes spp. mosquitoes. Since 2007, two different CHIKV stains (E1-226A and E1-226V) have been responsible for outbreaks in European countries, including Italy, sustained by Ae. albopictus mosquitoes. FINDINGS: In this study, we assessed the susceptibility to the CHIKV E1-226V, strain responsible for the Italian 2007 outbreak, of eight Ae...
April 19, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29672219/seroepidemiology-of-chikungunya-virus-among-febrile-patients-in-eight-health-facilities-in-central-and-northern-mozambique-2015-2016
#3
Virgilio S António, Argentina F Muianga, Janett Wieseler, Sádia A Pereira, Vanessa O Monteiro, Flora Mula, Imelda Chelene, Inocêncio S Chongo, John O Oludele, Beate M Kümmerer, Eduardo S Gudo
BACKGROUND: The burden and spread of chikungunya virus (CHIKV) are rapidly increasing worldwide, but the epidemiology in Mozambique is barely known. The aim of this study was to determine the seroepidemiology of CHIKV in central and northern Mozambique. METHODS: A cross-sectional study was conducted between March 2015 and May 2016 in eight health facilities situated in central and northern Mozambique to recruit 392 patients with undifferentiated febrile illness from outpatient clinics...
April 19, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29667206/surveillance-of-donated-blood-during-the-2016-arbovirus-outbreak-in-brazil
#4
Rohit Sharma, Larissa Costa Santos, Robson Amaro da Silva, Caroline Vieira Gonçalves, Stéfano de Melo Calado, Denisar P Santos, Josana Passos de Andrade de Melo, Rita de Cássia Pontello Rampazzo, Luciana Requião, Marco Aurélio Krieger, Manoel Barral-Netto, Camila I de Oliveira
Reports of arboviral transmission via blood transfusion may be a cause of concern among asymptomatic infected donors. This study evaluated the presence of arboviruses in donated blood products during the 2016 outbreak in Vitória da Conquista (Bahia-Brazil). Serum samples (n = 676) were screened for ZIKV, CHIKV and the four DENV serotypes using a one-step reverse transcriptase-based Real-Time Polymerase Chain Reaction (RT-PCR). No samples tested positive for any of the targets, whereas positive controls performed as expected...
April 17, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29643398/deciphering-the-dark-proteome-of-chikungunya-virus
#5
Ankur Singh, Ankur Kumar, Rakhi Yadav, Vladimir N Uversky, Rajanish Giri
Chikungunya virus (CHIKV) is a mosquito-borne alphavirus. The outbreak of CHIKV infection has been seen in many tropical and subtropical regions of the biosphere. Current reports evidenced that after outbreaks in 2005-06, the fitness of this virus propagating in Aedes albopictus enhanced due to the epistatic mutational changes in its envelope protein. In our study, we evaluated the prevalence of intrinsically disordered proteins (IDPs) and IDP regions (IDPRs) in CHIKV proteome. IDPs/IDPRs are known as members of a 'Dark Proteome' that defined as a set of polypeptide segments or whole protein without unique three-dimensional structure within the cellular milieu but with significant biological functions, such as cell cycle regulation, control of signaling pathways, and maintenance of viral proteomes...
April 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29643334/performance-of-the-trioplex-real-time-rt-pcr-assay-for-detection-of-zika-dengue-and-chikungunya-viruses
#6
Gilberto A Santiago, Jesús Vázquez, Sean Courtney, Katia Y Matías, Lauren E Andersen, Candimar Colón, Angela E Butler, Rebecca Roulo, John Bowzard, Julie M Villanueva, Jorge L Muñoz-Jordan
The emergence and spread of Zika virus (ZIKV) presented a challenge to the diagnosis of ZIKV infections in areas with transmission of dengue (DENV) and chikungunya (CHIKV) viruses. To facilitate detection of ZIKV infections, and differentiate these infections from DENV and CHIKV, we developed the Trioplex real-time RT-PCR assay (Trioplex assay). Here, we describe the optimization of multiplex and singleplex formats of the assay for a variety of chemistries and instruments to facilitate global standardization and implementation...
April 11, 2018: Nature Communications
https://www.readbyqxmd.com/read/29627722/economic-costs-of-chikungunya-virus-in-colombia
#7
Nelson J Alvis-Zakzuk, Diana Díaz-Jiménez, Liliana Castillo-Rodríguez, Carlos Castañeda-Orjuela, Ángel Paternina-Caicedo, Hernando Pinzón-Redondo, María Carrasquilla-Sotomayor, Nelson Alvis-Guzmán, Fernando De La Hoz-Restrepo
OBJECTIVE: The aim of the present study was to estimate the economic impact of chikungunya virus (CHIKV) infection in Colombia from a societal perspective. METHODS: We conducted a retrospective, bottom-up cost-of-illness study in clinically confirmed cases during the first chikungunya (CHIK) outbreak in Colombia in 2014. Direct and indirect costs were estimated per patient. Economic costs were calculated by the addition of direct costs (direct medical costs and out-of-pocket heath expenditures) and indirect cost as a result of loss of productivity...
April 5, 2018: Value in Health Regional Issues
https://www.readbyqxmd.com/read/29607358/rainfall-and-chikungunya-incidences-in-india-during-2010-2014
#8
Pratip Shil, Dilip R Kothawale, Anakkathil B Sudeep
Changing climate scenario has resulted in recent emergence and re-emergence of various arboviral diseases including Chikungunya. This disease is caused by Chikungunya virus (CHIKV), which belongs to Togaviridae family of viruses and spread by Aedes mosquitoes. A resurgence of CHIKV and its rapid global spread has been observed since 2004. The disease reemerged in India in 2005, after a gap of 32 years, causing massive outbreaks in some states and circulating thereafter. In the present paper we analyze CHIKV incidence data from India (2010-2014) with a view to understand association with environmental parameters, if any...
March 2018: Virusdisease
https://www.readbyqxmd.com/read/29604514/renal-involvement-in-fatal-cases-of-chikungunya-virus-infection
#9
Marcela Mercado, Jorge Acosta-Reyes, Edgar Parra, Luis Guzmán, Mauricio Beltrán, Philippe Gasque, Carlos Mejía-García, Diego Viasus
BACKGROUND: Information regarding physiopathology and complications in fatal cases of chikungunya virus (CHIKV) is scarce. OBJECTIVES: The aim of this study was to describe the frequency and severity of renal complications in fatal cases associated with CHIKV infection based on the clinical and histopathological features from post-mortem tissue biopsies. STUDY DESIGN: This retrospective study included fatal cases associated with CHIKV infection occurring from September 2014 through October 2015, reported to National System for Public Health Surveillance (SIVIGILA) and laboratory-confirmed by the National Institute of Health of Colombia...
March 23, 2018: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29590177/emergence-of-orientia-tsutsugamushi-as-an-important-cause-of-acute-encephalitis-syndrome-in-india
#10
Parul Jain, Shantanu Prakash, Piyush K Tripathi, Archana Chauhan, Shikha Gupta, Umesh Sharma, Anil K Jaiswal, Devraj Sharma, Amita Jain
BACKGROUND: Acute Encephalitis Syndrome (AES) is a major seasonal public health problem in Bihar, India. Despite efforts of the Bihar health department and the Government of India, burden and mortality of AES cases have not decreased, and definitive etiologies for the illness have yet to be identified. OBJECTIVES: The present study was undertaken to study the specific etiology of AES in Bihar. METHODS: Cerebrospinal fluid and/or serum samples from AES patients were collected and tested for various pathogens, including viruses and bacteria by ELISA and/or Real Time PCR...
March 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
#11
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/29577083/human-antibody-responses-to-emerging-mayaro-virus-and-cocirculating-alphavirus-infections-examined-by-using-structural-proteins-from-nine-new-and-old-world-lineages
#12
Jessica L Smith, Christine L Pugh, Emily D Cisney, Sarah L Keasey, Carolina Guevara, Julia S Ampuero, Guillermo Comach, Doris Gomez, Margarita Ochoa-Diaz, Robert D Hontz, Robert G Ulrich
Mayaro virus (MAYV), Venezuelan equine encephalitis virus (VEEV), and chikungunya virus (CHIKV) are vector-borne alphaviruses that cocirculate in South America. Human infections by these viruses are frequently underdiagnosed or misdiagnosed, especially in areas with high dengue virus endemicity. Disease may progress to debilitating arthralgia (MAYV, CHIKV), encephalitis (VEEV), and death. Few standardized serological assays exist for specific human alphavirus infection detection, and antigen cross-reactivity can be problematic...
March 2018: MSphere
https://www.readbyqxmd.com/read/29575672/serological-evidence-of-widespread-exposure-of-grenada-fruit-bats-to-chikungunya-virus
#13
D Stone, A C Lyons, Y-J S Huang, D L Vanlandingham, S Higgs, B J Blitvich, A A Adesiyun, S E Santana, L Leiser-Miller, S Cheetham
Antibody detection against selected potentially zoonotic vector-borne alphaviruses and flaviviruses was conducted on sera from bats from all six parishes in Grenada, West Indies. Sera were tested for (i) antibodies to flaviviruses West Nile virus, St. Louis encephalitis virus, Ilhéus virus, Bussuquara virus (BSQV), Rio Bravo virus and all four serotypes of dengue virus (DENV) by plaque reduction neutralization test (PRNT); (ii) antibodies to alphaviruses western equine encephalitis virus, Venezuelan equine encephalitis virus and eastern equine encephalitis virus by epitope-blocking enzyme-linked immunosorbent assay (ELISA); and (iii) antibodies to the alphavirus chikungunya (CHIKV) by PRNT...
March 25, 2018: Zoonoses and Public Health
https://www.readbyqxmd.com/read/29562870/sleep-eeg-of-microcephaly-in-zika-outbreak
#14
Paulo Afonso Medeiros Kanda, Aline de Almeida Xavier Aguiar, Jose Lucivan Miranda, Alexandre Loverde Falcao, Claudia Suenia Andrade, Luigi Neves Dos Santos Reis, Ellen White R Bacelar Almeida, Yanes Brum Bello, Arthur Monfredinho, Rafael Guimaraes Kanda
Microcephaly (MC), previously considered rare, is now a health emergency of international concern because of the devastating Zika virus pandemic outbreak of 2015. The authors describe the electroencephalogram (EEG) findings in sleep EEG of epileptic children who were born with microcephaly in areas of Brazil with active Zika virus transmission between 2014 and 2017. The authors reviewed EEGs from 23 children. Nine were females (39.2%), and the age distribution varied from 4 to 48 months. MC was associated with mother positive serology to toxoplasmosis (toxo), rubella (rub), herpes, and dengue (1 case); toxo (1 case); chikungunya virus (CHIKV) (1 case); syphilis (1 case); and Zika virus (ZIKV) (10 cases)...
2018: Neurodiagnostic Journal
https://www.readbyqxmd.com/read/29555345/rapid-response-to-an-emerging-infectious-disease-lessons-learned-from-development-of-a-synthetic-dna-vaccine-targeting-zika-virus
#15
Sagar B Kudchodkar, Hyeree Choi, Emma L Reuschel, Rianne Esquivel, Jackie Jin-Ah Kwon, Moonsup Jeong, Joel N Maslow, Charles C Reed, Scott White, J Joseph Kim, Gary P Kobinger, Pablo Tebas, David B Weiner, Kar Muthumani
Vaccines are considered one of the greatest advances in modern medicine. The global burden of numerous infectious diseases has been significantly reduced, and in some cases, effectively eradicated through the deployment of specific vaccines. However, efforts to develop effective vaccines against infectious pathogens such as influenza, HIV, dengue virus (DENV), chikungunya virus (CHIKV), Ebola virus, and Zika virus (ZIKV) have proven challenging. Zika virus is a mosquito-vectored flavivirus responsible for periodic outbreaks of disease in Africa, Southeast Asia, and the Pacific Islands dating back over 50 years...
March 16, 2018: Microbes and Infection
https://www.readbyqxmd.com/read/29553317/seroprevalence-of-chikungunya-virus-after-its-emergence-in-brazil
#16
Juarez P Dias, Maria da Conceição N Costa, Gubio Soares Campos, Enny S Paixão, Marcio S Natividade, Florisneide R Barreto, Martha Suely C Itaparica, Cristina Goes, Francisca L S Oliveira, Eloisa B Santana, Neusa S J Silva, Carlos A A Brito, Laura C Rodrigues, Silvia Inez Sardi, Ramon C Saavedra, Maria Glória Teixeira
Chikungunya has had a substantial impact on public health because of the magnitude of its epidemics and its highly debilitating symptoms. We estimated the seroprevalence, proportion of symptomatic cases, and proportion of chronic form of disease after introduction of chikungunya virus (CHIKV) in 2 cities in Brazil. We conducted the population-based study through household interviews and serologic surveys during October-December 2015. In Feira de Santana, we conducted a serologic survey of 385 persons; 57.1% were CHIKV-positive...
April 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29551394/current-status-challenges-and-perspectives-in-the-development-of-vaccines-against-yellow-fever-dengue-zika-and-chikungunya-viruses
#17
REVIEW
José V J Silva, Thaísa R R Lopes, Edmilson F de Oliveira-Filho, Renato A S Oliveira, Ricardo Durães-Carvalho, Laura H V G Gil
Emerging and re-emerging viral infections transmitted by insect vectors (arthopode-borne viruses, arbovirus) are a serious threat to global public health. Among them, yellow fever (YFV), dengue (DENV), chikungunya (CHIKV) and Zika (ZIKV) viruses are particularly important in tropical and subtropical regions. Although vector control is one of the most used prophylactic measures against arboviruses, it often faces obstacles, such as vector diversity, uncontrolled urbanization and increasing resistance to insecticides...
March 15, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29551005/chikungunya-dengue-and-zika-in-immunocompromised-hosts
#18
REVIEW
Luiz Guilherme Darrigo, Alexandre Machado de Sant'Anna Carvalho, Clarisse Martins Machado
PURPOSE OF REVIEW: Describe the characteristics of chikungunya, dengue, and Zika in transplant recipients and immunocompromised hosts. RECENT FINDINGS: Stem cell/bone marrow grafts, organs, and blood transfusions can transmit CHIKV/DENV/ZIKV infections, which are clinically similar, resembling influenza-like illness. Laboratory confirmation is necessary. In the acute phase, RT-PCR is preferred. DENV and ZIKV serology may cross-react. Delayed engraftment and extended viruria is observed in ZIKV+/HSCT recipients, while longer viremia is observed in DENV+/HSCT patients...
March 17, 2018: Current Infectious Disease Reports
https://www.readbyqxmd.com/read/29543910/spatio-temporal-coherence-of-dengue-chikungunya-and-zika-outbreaks-in-merida-mexico
#19
Donal Bisanzio, Felipe Dzul-Manzanilla, Hector Gomez-Dantés, Norma Pavia-Ruz, Thomas J Hladish, Audrey Lenhart, Jorge Palacio-Vargas, Jesus F González Roldan, Fabian Correa-Morales, Gustavo Sánchez-Tejeda, Pablo Kuri Morales, Pablo Manrique-Saide, Ira M Longini, M Elizabeth Halloran, Gonzalo M Vazquez-Prokopec
Response to Zika virus (ZIKV) invasion in Brazil lagged a year from its estimated February 2014 introduction, and was triggered by the occurrence of severe congenital malformations. Dengue (DENV) and chikungunya (CHIKV) invasions tend to show similar response lags. We analyzed geo-coded symptomatic case reports from the city of Merida, Mexico, with the goal of assessing the utility of historical DENV data to infer CHIKV and ZIKV introduction and propagation. About 42% of the 40,028 DENV cases reported during 2008-2015 clustered in 27% of the city, and these clustering areas were where the first CHIKV and ZIKV cases were reported in 2015 and 2016, respectively...
March 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29535306/role-of-monkeys-in-the-sylvatic-cycle-of-chikungunya-virus-in-senegal
#20
Benjamin M Althouse, Mathilde Guerbois, Derek A T Cummings, Ousmane M Diop, Ousmane Faye, Abdourahmane Faye, Diawo Diallo, Bakary Djilocalisse Sadio, Abdourahmane Sow, Oumar Faye, Amadou A Sall, Mawlouth Diallo, Brenda Benefit, Evan Simons, Douglas M Watts, Scott C Weaver, Kathryn A Hanley
Arboviruses spillover into humans either as a one-step jump from a reservoir host species into humans or as a two-step jump from the reservoir to an amplification host species and thence to humans. Little is known about arbovirus transmission dynamics in reservoir and amplification hosts. Here we elucidate the role of monkeys in the sylvatic, enzootic cycle of chikungunya virus (CHIKV) in the region around Kédougou, Senegal. Over 3 years, 737 monkeys were captured, aged using anthropometry and dentition, and tested for exposure to CHIKV by detection of neutralizing antibodies...
March 13, 2018: Nature Communications
keyword
keyword
47107
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"