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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
#1
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/29145400/zika-virus-an-updated-review-of-competent-or-naturally-infected-mosquitoes
#2
REVIEW
Yanouk Epelboin, Stanislas Talaga, Loïc Epelboin, Isabelle Dusfour
Zika virus (ZIKV) is an arthropod-borne virus (arbovirus) that recently caused outbreaks in the Americas. Over the past 60 years, this virus has been observed circulating among African, Asian, and Pacific Island populations, but little attention has been paid by the scientific community until the discovery that large-scale urban ZIKV outbreaks were associated with neurological complications such as microcephaly and several other neurological malformations in fetuses and newborns. This paper is a systematic review intended to list all mosquito species studied for ZIKV infection or for their vector competence...
November 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29130262/zika-contraception-and-the-non-identity-problem
#3
Keyur Doolabh, Lucius Caviola, Julian Savulescu, Michael Selgelid, Dominic Jc Wilkinson
The 2016 outbreak of the Zika arbovirus was associated with large numbers of cases of the newly-recognised Congenital Zika Syndrome (CZS). This novel teratogenic epidemic raises significant ethical and practical issues. Many of these arise from strategies used to avoid cases of CZS, with contraception in particular being one proposed strategy that is atypical in epidemic control. Using contraception to reduce the burden of CZS has an ethical complication: interventions that impact the timing of conception alter which people will exist in the future...
December 2017: Developing World Bioethics
https://www.readbyqxmd.com/read/29123142/genomic-and-epidemiological-characterisation-of-a-dengue-virus-outbreak-among-blood-donors-in-brazil
#4
Nuno R Faria, Antonio Charlys da Costa, José Lourenço, Paula Loureiro, Maria Esther Lopes, Roberto Ribeiro, Cecilia Salete Alencar, Moritz U G Kraemer, Christian J Villabona-Arenas, Chieh-Hsi Wu, Julien Thézé, Kamran Khan, Shannon E Brent, Camila Romano, Eric Delwart, Brian Custer, Michael P Busch, Oliver G Pybus, Ester C Sabino
Outbreaks caused by Dengue, Zika and Chikungunya viruses can spread rapidly in immunologically naïve populations. By analysing 92 newly generated viral genome sequences from blood donors and recipients, we assess the dynamics of dengue virus serotype 4 during the 2012 outbreak in Rio de Janeiro. Phylogenetic analysis indicates that the outbreak was caused by genotype II, although two isolates of genotype I were also detected for the first time in Rio de Janeiro. Evolutionary analysis and modelling estimates are congruent, indicating a reproduction number above 1 between January and June, and at least two thirds of infections being unnoticed...
November 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29108009/zika-virus-displacement-by-a-chikungunya-outbreak-in-recife-brazil
#5
Tereza Magalhaes, Cynthia Braga, Marli T Cordeiro, Andre L S Oliveira, Priscila M S Castanha, Ana Paula R Maciel, Nathalia M L Amancio, Pollyanne N Gouveia, Valter J Peixoto-da-Silva, Thaciana F L Peixoto, Helena Britto, Priscilla V Lima, Andreza R S Lima, Kerstin D Rosenberger, Thomas Jaenisch, Ernesto T A Marques
BACKGROUND: Several arboviruses, including dengue virus (DENV), Zika virus (ZIKV) and chikungunya virus (CHIKV), transmitted by Aedes mosquitoes, circulate in northeast Brazil. Diseases caused by these viruses are of great public health relevance, however, their epidemiological features in areas where the three viruses co-circulate are scarce. Here, we present analyses of molecular and serological diagnostics in a prospective study of acute febrile patients recruited from May 2015 to May 2016 in Recife, Brazil...
November 6, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29104309/quantification-of-within-and-between-farm-dispersal-of-culicoides-biting-midges-using-an-immunomarking-technique
#6
Christopher J Sanders, Lara E Harrup, Laura A Tugwell, Victor A Brugman, Marion England, Simon Carpenter
Culicoides biting midges (Diptera, Ceratopogonidae) are vectors of arboviruses that cause significant economic and welfare impact. Local-scale spread of Culicoides-borne arboviruses is largely determined by the between-farm movement of infected Culicoides.Study of the dispersal behaviour of Culicoides by capture-mark-recapture (CMR) is problematic due to the likelihood of mortality and changes in behaviour upon capture caused by the small size and fragility of these insects, evidenced by low recapture rates...
October 2017: Journal of Applied Ecology
https://www.readbyqxmd.com/read/29100064/outbreak-of-chikungunya-virus-in-a-vulnerable-population-of-sergipe-brazil-a-molecular-and-serological-survey
#7
Marielton Dos Passos Cunha, Cliomar Alves Dos Santos, Daniel Ferreira de Lima Neto, Alessandra Soares Schanoski, Shahab Zaki Pour, Saulo Duarte Passos, Mércia Simone Feitosa de Souza, Danuza Duarte Costa, Paolo Marinho de Andrade Zanotto
BACKGROUND: Chikungunya virus (CHIKV) is a re-emerging arbovirus that is causing outbreaks in several countries of the Americas. The virus was introduced in Brazil in 2014, and since then, several Brazilian states have notified autochthonous cases. OBJECTIVES: Provide additional evidence on a CHIKV outbreak and an outline of the laboratory and clinical profile of symptomatic patients in Sergipe, Brazil. STUDY DESIGN: In February 2016, we collected 142 serum samples from symptomatic patients for arboviruses in Sergipe, Brazil...
October 31, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29065182/clinical-characterization-of-acute-and-convalescent-illness-of-confirmed-chikungunya-cases-from-chiapas-s-mexico-a-cross-sectional-study
#8
Rogelio Danis-Lozano, Esteban Eduardo Díaz-González, Karina Del Carmen Trujillo-Murillo, Sandra Caballero-Sosa, Jesús Sepúlveda-Delgado, Iliana Rosalía Malo-García, Luis Miguel Canseco-Ávila, Luis Manuel Salgado-Corsantes, Sergio Domínguez-Arrevillaga, Raúl Torres-Zapata, Omar Gómez-Cruz, Ildefonso Fernández-Salas
BACKGROUND: The emerging chikungunya virus (CHIKV), is an arbovirus causing intense outbreaks in North America. The situation in Mexico is alarming, and CHIKV threatens to spread further throughout North America. Clinical and biological features of CHIKF outbreaks in Mexico have not been well described; thus, we conducted a cross sectional study of a CHIKV outbreak in Chiapas, Southern Mexico to further characterize these features. METHODOLOGY/PRINCIPAL FINDINGS: We collected blood samples from patients suspected of having chikungunya fever (CHIKF) who presented to Clinical Hospital ISSSTE Dr...
2017: PloS One
https://www.readbyqxmd.com/read/29044149/development-and-evaluation-of-a-rapid-molecular-diagnostic-test-for-zika-virus-infection-by-reverse-transcription-loop-mediated-isothermal-amplification
#9
Yohei Kurosaki, Danyelly Bruneska Gondim Martins, Mayuko Kimura, Andriu Dos Santos Catena, Maria Amélia Carlos Souto Maior Borba, Sandra da Silva Mattos, Haruka Abe, Rokusuke Yoshikawa, José Luiz de Lima Filho, Jiro Yasuda
The recent outbreak of Zika virus (ZIKV) disease caused an enormous number of infections in Central and South America, and the unusual increase in the number of infants born with microcephaly associated with ZIKV infection aroused global concern. Here, we developed a reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay using a portable device for the detection of ZIKV. The assay specifically detected ZIKV strains of both Asian and African genotypes without cross-reactivity with other arboviruses, including Dengue and Chikungunya viruses...
October 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29040730/diurnal-temperature-range-and-chikungunya-virus-infection-in-invasive-mosquito-vectors
#10
Barry W Alto, Keenan Wiggins, Bradley Eastmond, Sara Ortiz, Kylie Zirbel, L Philip Lounibos
Climate strongly influences the geographic distribution and timing of mosquito-borne disease outbreaks. Environmental temperature affects phenotypic traits of mosquitoes including vector competence for arboviruses mediated by changes in infection, extrinsic incubation period and in rates of transmission. Most experiments, however, are done at constant temperatures. In nature, mosquitoes are more likely to experience daily fluctuations in temperature. Here we compare disseminated infection (leg infection) and saliva infection of Aedes aegypti (L...
October 10, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29020245/guillain-barr%C3%A3-syndrome-associated-with-zika-virus-infection-in-martinique-in-2016-a-prospective-study
#11
Benoît Rozé, Fatiha Najioullah, Jean-Louis Fergé, Frédérique Dorléans, Kossivi Apetse, Jose-Luis Barnay, Elise Daudens-Vaysse, Yannick Brouste, Raymond Césaire, Laurence Fagour, Ruddy Valentino, Martine Ledrans, Hossein Mehdaoui, Sylvie Abel, Isabelle Leparc-Goffart, Aissatou Signate, André Cabié
Background: Guillain-Barré syndrome (GBS) has been reported to be associated with Zika virus (ZIKV) infection in case reports and retrospective studies, mostly on the basis of serological tests, with the problematic cross-reacting antibodies of the Flavivirus genus. Some GBS cases do not exhibit a high level of diagnostic certainty. This prospective study aimed to describe the clinical profiles and the frequency of GBS associated with ZIKV during the ZIKV outbreak in Martinique in 2016...
July 20, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29019762/central-nervous-system-effects-of-intrauterine-zika-virus-infection-a-pictorial-review
#12
Bianca Guedes Ribeiro, Heron Werner, Flávia P P L Lopes, L Celso Hygino da Cruz, Tatiana M Fazecas, Pedro A N Daltro, Renata A Nogueira
Relatively few agents have been associated with congenital infections involving the brain. One such agent is the Zika virus, which has caused several outbreaks worldwide and has spread in the Americas since 2015. The Zika virus is an arbovirus transmitted by infected female mosquito vectors, such as the Aedes aegypti mosquito. This virus has been commonly associated with congenital infections of the central nervous system and has greatly increased the rates of microcephaly. Ultrasonography (US) remains the method of choice for fetal evaluation of congenital Zika virus infection...
October 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29016291/chikungunya-detection-during-dengue-outbreak-in-sumatra-indonesia-clinical-manifestations-and-virological-profile
#13
R Tedjo Sasmono, Aditya Perkasa, Benediktus Yohan, Sotianingsih Haryanto, Frilasita A Yudhaputri, Rahma F Hayati, Chairin Nisa Ma'roef, Jeremy P Ledermann, Khin Saw Aye Myint, Ann M Powers
Chikungunya fever (CHIK) is an acute viral infection caused by infection with chikungunya virus (CHIKV). The disease affects people in areas where certain Aedes species mosquito vectors are present, especially in tropical and subtropical countries. Indonesia has witnessed CHIK disease since the early 1970s with sporadic outbreaks occurring throughout the year. The CHIK clinical manifestation, characterized by fever, headache, and joint pain, is similar to that of dengue (DEN) disease. During a molecular study of a DEN outbreak in Jambi, Sumatra, in the early 2015, DEN-negative samples were evaluated for evidence of CHIKV infection...
September 25, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28986827/sampling-design-and-mosquito-trapping-for-surveillance-of-arboviral-activity
#14
Luís E Paternina, Juan David Rodas
Mosquitoes are the most important vectors for arboviral human diseases across the world. Diseases such as Dengue Fever (DF), West Nile Virus (WNV), Yellow Fever (YF), Japanese Encephalitis (JE), Venezuelan Equine Encephalitis (VEE), and St. Louis Encephalitis (SLE), among others, have a deep impact in public health. Usually mosquitoes acquire the arboviral infection when they feed on viremic animals (birds or mammals), so their infection can be detected along the year or in short periods of time (seasons). All of this depends on the frequency and seasonality of the encounters between viremic animals and vectors...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28986825/epidemiological-surveillance-of-viral-hemorrhagic-fevers-with-emphasis-on-clinical-virology
#15
Carolina Montoya-Ruiz, Juan David Rodas
This article will outline surveillance approaches for viral hemorrhagic fevers. Specific methods for surveillance of clinical samples will be emphasized. Separate articles will describe methods for surveillance of rodent-borne viruses (roboviruses) and arthropod-borne viruses (arboviruses). Since the appearance of hantaviruses and arenaviruses in the Americas, more than 30 different species in each group have been established, and therefore they have become the most frequently emerging viruses. Flaviviruses such as yellow fever and dengue viruses, although easier to recognize, are also more widely spread and therefore considered a very important public health issue, particularly for under-developed countries...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28982578/zika-and-chikungunya-virus-detection-in-naturally-infected-aedes-aegypti-in-ecuador
#16
Varsovia Cevallos, Patricio Ponce, Jesse J Waggoner, Benjamin A Pinsky, Josefina Coloma, Cristina Quiroga, Diego Morales, Maria José Cárdenas
The wide and rapid spread of Chikungunya (CHIKV) and Zika (ZIKV) viruses represent a global public health problem, especially for tropical and subtropical environments. The early detection of CHIKV and ZIKV in mosquitoes may help to understand the dynamics of the diseases in high-risk areas, and to design data based epidemiological surveillance to activate the preparedness and response of the public health system and vector control programs. This study was done to detect ZIKV and CHIKV viruses in naturally infected fed female Aedes aegypti (L...
October 2, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28973490/circulation-of-denv2-and-denv4-in-aedes-aegypti-diptera-culicidae-mosquitoes-from-praia-santiago-island-cabo-verde
#17
Duschinka R D Guedes, Elisete T B Gomes, Marcelo H S Paiva, Maria A V de Melo-Santos, Joana Alves, Lara F Gómez, Constância F J Ayres
Arthropod-borne viruses, such as Dengue (DENV), Chikungunya (CHIKV), and Zika (ZIKV), pose a challenge to public health, due to their worldwide distribution and large-scale outbreaks. Dengue fever is currently one of the most important diseases and it is caused by four serotypes of DENV and is mainly transmitted by the mosquito Aedes aegypti. It is estimated that 50-100 million cases are reported every year worldwide. More recently, CHIKV and ZIKV, which are also transmitted by Ae. aegypti, have caused epidemics in countries in the Caribbean region, the Pacific region, and Americas...
July 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28956525/emerging-arboviruses-in-quebec-canada-assessing-public-health-risk-by-serology-in-humans-horses-and-pet-dogs
#18
J P Rocheleau, P Michel, L R Lindsay, M Drebot, A Dibernardo, N H Ogden, A Fortin, J Arsenault
Periodic outbreaks of West Nile virus (WNV), Eastern equine encephalitis virus (EEEV) and to a lesser extent, California serogroup viruses (CSGV), have been reported in parts of Canada in the last decade. This study was designed to provide a broad assessment of arboviral activity in Quebec, Canada, by conducting serological surveys for these arboviruses in 196 horses, 1442 dogs and 485 humans. Sera were screened by a competitive enzyme linked immunosorbent assay and positive samples confirmed by plaque reduction neutralisation tests...
October 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28953892/impact-of-environmental-factors-on-neglected-emerging-arboviral-diseases
#19
Camila Lorenz, Thiago S Azevedo, Flávia Virginio, Breno S Aguiar, Francisco Chiaravalloti-Neto, Lincoln Suesdek
BACKGROUND: Brazil is a tropical country that is largely covered by rainforests and other natural ecosystems, which provide ideal conditions for the existence of many arboviruses. However, few analyses have examined the associations between environmental factors and arboviral diseases. Thus, based on the hypothesis of correlation between environment and epidemiology, the proposals of this study were (1) to obtain the probability of occurrence of Oropouche, Mayaro, Saint Louis and Rocio fevers in Brazil based on environmental conditions corresponding to the periods of occurrence of the outbreaks; (2) to describe the macroclimatic scenario in Brazil in the last 50 years, evaluating if there was any detectable tendency to increase temperatures and (3) to model future expansion of those arboviruses in Brazil based on future temperature projections...
September 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28937995/enzootic-mosquito-vector-species-at-equine-encephalitis-transmission-foci-in-the-rep%C3%A3%C2%BAblica-de-panam%C3%A3
#20
Rolando Torres, Rafael Samudio, Jean-Paul Carrera, Josue Young, Ricardo Márquez, Lisbeth Hurtado, Scott Weaver, Luis Fernando Chaves, Robert Tesh, Lorenzo Cáceres
The identification of mosquito vector species present at arboviral enzootic transmission foci is important to understand transmission eco-epidemiology and to propose and implement prevention and control strategies that reduce vector-borne equine encephalitis transmission. The goal of this study was to identify mosquito species potentially involved in the transmission of enzootic equine encephalitis, in relation to their abundance and diversity at three endemic regions in the República de Panamá. We sampled adult mosquitoes during the dry and rainy season of Panamá...
2017: PloS One
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