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https://www.readbyqxmd.com/read/28212379/distribution-and-abundance-of-key-vectors-of-rift-valley-fever-and-other-arboviruses-in-two-ecologically-distinct-counties-in-kenya
#1
Rosemary Sang, Samwel Arum, Edith Chepkorir, Gladys Mosomtai, Caroline Tigoi, Faith Sigei, Olivia Wesula Lwande, Tobias Landmann, Hippolyte Affognon, Clas Ahlm, Magnus Evander
BACKGROUND: Rift Valley fever (RVF) is a mosquito-borne viral zoonosis of ruminants and humans that causes outbreaks in Africa and the Arabian Peninsula with significant public health and economic consequences. Humans become infected through mosquito bites and contact with infected livestock. The virus is maintained between outbreaks through vertically infected eggs of the primary vectors of Aedes species which emerge following rains with extensive flooding. Infected female mosquitoes initiate transmission among nearby animals, which amplifies virus, thereby infecting more mosquitoes and moving the virus beyond the initial point of emergence...
February 17, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28208639/biological-control-strategies-for-mosquito-vectors-of-arboviruses
#2
REVIEW
Yan-Jang S Huang, Stephen Higgs, Dana L Vanlandingham
Historically, biological control utilizes predatory species and pathogenic microorganisms to reduce the population of mosquitoes as disease vectors. This is particularly important for the control of mosquito-borne arboviruses, which normally do not have specific antiviral therapies available. Although development of resistance is likely, the advantages of biological control are that the resources used are typically biodegradable and ecologically friendly. Over the past decade, the advancement of molecular biology has enabled optimization by the manipulation of genetic materials associated with biological control agents...
February 10, 2017: Insects
https://www.readbyqxmd.com/read/28192064/aedes-borne-virus-mosquito-interactions-mass-spectrometry-strategies-and-findings
#3
Victoria Pando-Robles, Cesar V Batista
Aedes-borne viruses are responsible for high-impact neglected tropical diseases and unpredictable outbreaks such as the ongoing Zika epidemics. Aedes mosquitoes spread different arboviruses such as Dengue virus (DENV), Chikungunya virus (CHIKV), and Zika virus, among others, and are responsible for the continuous emergence and reemergence of these pathogens. These viruses have complex transmission cycles that include two hosts, namely the Aedes mosquito as a vector and susceptible vertebrate hosts. Human infection with arboviruses causes diseases that range from subclinical or mild to febrile diseases, encephalitis, and hemorrhagic fever...
February 13, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28192048/a-serosurvey-of-diseases-of-free-ranging-gray-wolves-canis-lupus-in-minnesota
#4
Michelle Carstensen, John H Giudice, Erik C Hildebrand, J P Dubey, John Erb, Dan Stark, John Hart, Shannon Barber-Meyer, L David Mech, Steve K Windels, Andrew J Edwards
We tested serum samples from 387 free-ranging wolves ( Canis lupus ) from 2007 to 2013 for exposure to eight canid pathogens to establish baseline data on disease prevalence and spatial distribution in Minnesota's wolf population. We found high exposure to canine adenoviruses 1 and 2 (88% adults, 45% pups), canine parvovirus (82% adults, 24% pups), and Lyme disease (76% adults, 39% pups). Sixty-six percent of adults and 36% of pups exhibited exposure to the protozoan parasite Neospora caninum . Exposure to arboviruses was confirmed, including West Nile virus (37% adults, 18% pups) and eastern equine encephalitis (3% adults)...
February 13, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28191786/quantifying-the-potential-pathways-and-locations-of-rift-valley-fever-virus-entry-into-the-united-states
#5
A J Golnar, R C Kading, G L Hamer
The global invasion of West Nile virus, chikungunya virus and Zika virus in the past two decades suggests an increasing rate of mosquito-borne virus (arbovirus) dispersal. Rift Valley fever virus (RVFV) is an arbovirus identified as a high-consequence threat to the United States (USA) because of the severe economic and health consequences associated with disease. Numerous studies demonstrate that the USA is receptive to RVFV transmission based on the widespread presence of competent mosquito species and vertebrate species...
February 12, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28187236/zika-and-chikungunya-mosquito-borne-viruses-in-a-changing-world
#6
Talya Shragai, Blanka Tesla, Courtney Murdock, Laura C Harrington
The reemergence and growing burden of mosquito-borne virus infections have incited public fear and growing research efforts to understand the mechanisms of infection-associated health outcomes and to provide better approaches for mosquito vector control. While efforts to develop therapeutics, vaccines, and novel genetic mosquito-control technologies are underway, many important underlying ecological questions remain that could significantly enhance our understanding and ability to predict and prevent transmission...
February 10, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28187142/mosquito-cell-derived-west-nile-virus-replicon-particles-mimic-arbovirus-inoculum-and-have-reduced-spread-in-mice
#7
Brendan T Boylan, Fernando R Moreira, Tim W Carlson, Kristen A Bernard
Half of the human population is at risk of infection by an arthropod-borne virus. Many of these arboviruses, such as West Nile, dengue, and Zika viruses, infect humans by way of a bite from an infected mosquito. This infectious inoculum is insect cell-derived giving the virus particles distinct qualities not present in secondary infectious virus particles produced by infected vertebrate host cells. The insect cell-derived particles differ in the glycosylation of virus structural proteins and the lipid content of the envelope, as well as their induction of cytokines...
February 10, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28185278/zika-virus-and-blood-transfusion-the-experience-of-french-polynesia
#8
Damien Bierlaire, Sylvie Mauguin, Julien Broult, Didier Musso
BACKGROUND: Between October 2013 and March 2014, French Polynesia experienced the largest Zika virus (ZIKV) outbreak ever described before the emergence of ZIKV in the Americas in 2015. As arbovirus transfusion-transmitted (TT) infections have been previously reported, we hypothesized that transfusion of blood products could also transmit ZIKV. STUDY DESIGN AND METHODS: Mitigation strategies to prevent ZIKV-TT infections included nonspecific measures and the implementation of a laboratory developed ZIKV-specific nucleic acid testing (NAT) assay...
February 10, 2017: Transfusion
https://www.readbyqxmd.com/read/28182795/the-neutralizing-role-of-igm-during-early-chikungunya-virus-infection
#9
Chong-Long Chua, I-Ching Sam, Chun-Wei Chiam, Yoke-Fun Chan
The antibody isotype IgM appears earlier than IgG, within days of onset of symptoms, and is important during the early stages of the adaptive immune response. Little is known about the functional role of IgM during infection with chikungunya virus (CHIKV), a recently reemerging arbovirus that has caused large global outbreaks. In this study, we studied antibody responses in 102 serum samples collected during CHIKV outbreaks in Malaysia. We described the neutralizing role of IgM at different times post-infection and examined the independent contributions of IgM and IgG towards the neutralizing capacity of human immune sera during the early phase of infection, including the differences in targets of neutralizing epitopes...
2017: PloS One
https://www.readbyqxmd.com/read/28182667/environmental-and-social-change-drive-the-explosive-emergence-of-zika-virus-in-the-americas
#10
REVIEW
Sofia Ali, Olivia Gugliemini, Serena Harber, Alexandra Harrison, Lauren Houle, Javarcia Ivory, Sierra Kersten, Rebia Khan, Jenny Kim, Chris LeBoa, Emery Nez-Whitfield, Jamieson O'Marr, Emma Rothenberg, R Max Segnitz, Stephanie Sila, Anna Verwillow, Miranda Vogt, Adrienne Yang, Erin A Mordecai
Since Zika virus (ZIKV) was detected in Brazil in 2015, it has spread explosively across the Americas and has been linked to increased incidence of microcephaly and Guillain-Barré syndrome (GBS). In one year, it has infected over 500,000 people (suspected and confirmed cases) in 40 countries and territories in the Americas. Along with recent epidemics of dengue (DENV) and chikungunya virus (CHIKV), which are also transmitted by Aedes aegypti and Ae. albopictus mosquitoes, the emergence of ZIKV suggests an ongoing intensification of environmental and social factors that have given rise to a new regime of arbovirus transmission...
February 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28181903/widespread-activity-of-multiple-lineages-of-usutu-virus-western-europe-2016
#11
Daniel Cadar, Renke Lühken, Henk van der Jeugd, Mutien Garigliany, Ute Ziegler, Markus Keller, Jennifer Lahoreau, Lars Lachmann, Norbert Becker, Marja Kik, Bas B Oude Munnink, Stefan Bosch, Egbert Tannich, Annick Linden, Volker Schmidt, Marion P Koopmans, Jolianne Rijks, Daniel Desmecht, Martin H Groschup, Chantal Reusken, Jonas Schmidt-Chanasit
In the summer of 2016, Belgium, France, Germany and the Netherlands reported widespread Usutu virus (USUV) activity based on live and dead bird surveillance. The causative USUV strains represented four lineages, of which two putative novel lineages were most likely recently introduced into Germany and spread to other western European countries. The spatial extent of the outbreak area corresponded with R0 values > 1. The occurrence of the outbreak, the largest USUV epizootic registered so far in Europe, allowed us to gain insight in how a recently introduced arbovirus with potential public health implications can spread and become a resident pathogen in a naïve environment...
January 26, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28180996/predicting-the-potential-role-of-non-human-hosts-in-zika-virus-maintenance
#12
Constantino González-Salazar, Christopher R Stephens, Víctor Sánchez-Cordero
Arboviruses are often maintained in complex cycles involving vertebrates such as mammals or birds and blood-feeding mosquitoes. However, the role of wildlife hosts in their emergence or re-emergence in human populations has received little attention. The recent emergence of Zika virus in America, and previous occurrences of chikungunya and dengue, forces us to confront a potential new disease-emergence phenomenon. Using a spatial data mining framework to identify potential biotic interactions, based on the degree of co-occurrence between different species, we identified those mammal species with the highest potential for establishing mammal-vector interactions, considering as principal vector Aedes aegypti...
February 8, 2017: EcoHealth
https://www.readbyqxmd.com/read/28175982/complete-genome-sequence-of-menghai-flavivirus-a-novel-insect-specific-flavivirus-from-china
#13
Xianglilan Zhang, Xiaofang Guo, Hang Fan, Qiumin Zhao, Shuqing Zuo, Qiang Sun, Guangqian Pei, Shi Cheng, Xiaoping An, Yunfei Wang, Zhiqiang Mi, Yong Huang, Zhiyi Zhang, Yigang Tong, Hongning Zhou, Jiusong Zhang
Menghai flavivirus (MFV) was isolated from Aedes albopictus in Menghai county of Yunnan Province, China, during an arboviruses screening program in August 2010. Whole genome sequencing of MFV was performed using an Ion PGM™ Sequencer. The complete genome of MFV was 10897 nucleotides in length and encoded a polyprotein and fairly interesting flavivirus orf (FIFO). The polyprotein contained three flavivirus structural proteins (C, prM/M and E) and seven nonstructural proteins. Nucleotide BLAST analysis revealed that the MFV genome showed highest similarity to Xishuangbanna Aedes flavivirus, a novel insect-specific flavivirus recently isolated from the same area...
February 7, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28167278/the-host-cell-response-to-tick-borne-encephalitis-virus
#14
Tea Carletti, Mohammad Khalid Zakaria, Alessandro Marcello
Tick-borne encephalitis virus is the most prevalent autochthonous arbovirus in Europe and an important travel-associated virus. Complications of the infection could lead to lethal encephalitis in susceptible individuals. However, despite its clinical relevance and expanding geographical distribution, most of our knowledge on its pathogenesis is inferred from studies on other flaviviruses. Molecular details of the host cell response to infection are scarce leading to a poor understanding of the antiviral pathways and viral countermeasures that are critical to determine the outcome of the infection...
February 4, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28164306/amustaline-s-303-treatment-inactivates-high-levels-of-zika-virus-in-red-blood-cell-components
#15
Andrew Laughhunn, Felicia Santa Maria, Julien Broult, Marion C Lanteri, Adonis Stassinopoulos, Didier Musso, Maite Aubry
BACKGROUND: The potential for Zika virus (ZIKV) transmission by blood transfusion (TT) has been demonstrated in French Polynesia and Brazil. Pathogen inactivation (PI) of blood products is a proactive strategy to inactivate TT pathogens including arboviruses. Inactivation of West Nile, dengue, Zika, and chikungunya viruses was previously demonstrated by photochemical treatment with amotosalen and ultraviolet A (UVA) illumination. In this study, we evaluated ZIKV inactivation in red blood cell (RBC) components by a chemical approach that uses amustaline (S-303) and glutathione (GSH)...
February 5, 2017: Transfusion
https://www.readbyqxmd.com/read/28163928/arboviruses-and-the-eye
#16
REVIEW
Gabriel Costa de Andrade, Camila V Ventura, Paulo Augusto de Arruda Mello Filho, Maurício Maia, Silvana Vianello, Eduardo Büchele Rodrigues
Arthropod-borne viruses, or arboviruses, are viruses that are transmitted through the bites of mosquitoes and ticks. There are numerous arboviruses throughout the world capable of causing human disease spanning different viral families and genera. Recently, dengue, chikungunya, and zika viruses have emerged as increasingly important arboviruses that can cause human disease, however no specific treatment or vaccine is available for them. In addition, ocular manifestations of these diseases have become more prevalent over the past few years...
2017: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/28153792/mosquito-borne-viruses-circulating-in-kinshasa-democratic-republic-of-the-congo
#17
Kennedy Makola Mbanzulu, Roger Wumba, Jean-Pierre Kambala Mukendi, Josué Kikana Zanga, Fortunate Shija, Thierry Lengu Bobanga, Michel Ntetani Aloni, Gerald Misinzo
BACKGROUND: Diseases caused by mosquito-borne viruses are among the most important emerging diseases that threaten human and animal health, particularly in Africa. However, little attention has been paid to these diseases in the Democratic Republic of the Congo (DRC). The present cross-sectional study was undertaken between March and May 2014 to investigate the presence of mosquito-borne viruses in mosquitoes collected from five municipalities of Kinshasa, DRC. METHODS: Mosquitoes were collected using BG-Sentinel traps and battery-powered aspirators...
January 30, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28152011/dengue-virus-serotype-2-infection-alters-midgut-and-carcass-gene-expression-in-the-asian-tiger-mosquito-aedes-albopictus
#18
Hitoshi Tsujimoto, Kathryn A Hanley, Anitha Sundararajan, Nicholas P Devitt, Faye D Schilkey, Immo A Hansen
BACKGROUND: The Asian tiger mosquito, Aedes albopictus is currently an important vector for dengue, chikungunya and Zika virus, and its role in transmission of arthropod-borne viruses (arboviruses) may increase in the future due to its ability to colonize temperate regions. In contrast to Aedes aegypti, the dominant vector of dengue, chikungunya and Zika virus, genetic responses of Ae. albopictus upon infection with an arbovirus are not well characterized. Here we present a study of the changes in transcript expression in Ae...
2017: PloS One
https://www.readbyqxmd.com/read/28146192/-zika-virus-infection-in-pregnancy-fetal-and-neonatal-impact
#19
Wilfrido Coronell-Rodríguez, Cindy Arteta-Acosta, M Alejandra Suárez-Fuentes, M Cecilia Burgos-Rolon, M Teresa Rubio-Sotomayor, Michelle Sarmiento-Gutiérrez, Carlos Corzo-Díaz
Zika virus (ZV) is an arbovirus transmitted by Aedes aegypti and A. albopictus. The neurotropic profile of this virus is known since 1952. The main finding related to ZV in America is microcephaly. Two hypotheses are tested on its involvement in the central nervous system: its neurotropic feature and the direct effect of ZV on the placenta. Malformations and clinical findings on fetal development comprise congenital Zika syndrome. RT-PCR and serology (IgM) are useful for definitive diagnosis. However, we should keep in mind first that the viremia in pregnant women can stay for a longer period of time, and second, a positive IgM for Zika should be properly interpreted in an endemic area to other flavivirus...
December 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/28141963/following-the-yellow-brick-road
#20
Charles H Calisher
Charles Calisher was fascinated by microorganisms from the time he was in high school. He attended Stuyvesant High School in New York City, Philadelphia College of Pharmacy and Science (now University of the Sciences) (BS), then University of Notre Dame in South Bend, Indiana (MS), and finally Georgetown University, in Washington, DC (PhD), the latter while employed at a commercial biological house. He was hired by the US Communicable Disease Center (now the Centers for Disease Control and Prevention) in Atlanta, Georgia, was transferred to its Fort Collins laboratories in 1973, and retired from there in 1992...
January 31, 2017: Annual Review of Entomology
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