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habitat associations of eastern equine encephalitis transmission in walton county florida.eastern equine encephalitis virus (eeev; family togaviridae, genus alphavirus) a highly pathogenic mosquito-borne virus is endemic to eastern north america. the ecology of eeev in florida differs from that in other parts of the united states; eeev in the northeastern united states is historically associated with freshwater wetlands. no formal test of habitat associations of eeev in florida has been reported. geographical information sciences (gis) was used in conjunction with sentinel chicken ee ...022679885
insights into the recent emergence and expansion of eastern equine encephalitis virus in a new focus in the northern new england usa.eastern equine encephalomyelitis virus (eeev) causes a highly pathogenic zoonosis that circulates in an enzootic cycle involving the ornithophagic mosquito, culiseta melanura, and wild passerine birds in freshwater hardwood swamps in the northeastern u.s. epidemic/epizootic transmission to humans/equines typically occurs towards the end of the transmission season and is generally assumed to be mediated by locally abundant and contiguous mammalophagic "bridge vector" mosquitoes.201526453283
comparative analysis of distribution and abundance of west nile and eastern equine encephalomyelitis virus vectors in suffolk county, new york, using human population density and land use/cover data.five years of cdc light trap data from suffolk county, ny, were analyzed to compare the applicability of human population density (hpd) and land use/cover (luc) classification systems to describe mosquito abundance and to determine whether certain mosquito species of medical importance tend to be more common in urban (defined by hpd) or residential (defined by luc) areas. eleven study sites were categorized as urban or rural using u.s. census bureau data and by luc types using geographic informa ...200818533453
eastern equine encephalitis--new hampshire and massachusetts, august-september 2005.during august-september 2005, the new hampshire department of health and human services reported seven cases of human eastern equine encephalitis virus (eeev) disease, the first laboratory-confirmed, locally acquired cases of human eeev disease reported from new hampshire in 41 years of national surveillance. also during august--september 2005, the massachusetts department of public health reported four cases of human eeev disease, five times the annual average of 0.8 cases reported from massach ...200616810146
mosquito and arbovirus activity during 1997-2002 in a wetland in northeastern mississippi.the species composition and population dynamics of adult mosquitoes in a wetland near iuka, ms, were analyzed over a 6-yr period (1997-2002) and reverse transcription-polymerase chain reaction (pcr) detection rates of arboviruses determined during five of those years. blood meals of three likely vector species were identified using a pcr-based method that allows identification of the host to species. culex erraticus (dyar & knab) composed 51.9% of the population during the 6-yr period with 295 f ...200415185956
isolation of eastern equine encephalomyelitis virus from aedes vexans in connecticut. 196013842647
transmission of eastern equine encephalomyelitis virus in central alabama.a site near tuskegee, alabama was examined for vector activity of eastern equine encephalomyelitis (eee) virus in 2001. more than 23,000 mosquitoes representing 8 genera and 34 species were collected during a 21-week period, and five species, culiseta melanura, aedes vexans, coquillettidia perturbans, culex erraticus, and uranotaenia sapphirina, were examined for the presence of virus using a nested reverse transcriptase-polymerase chain reaction for eee virus. each species was infected at vario ...200312875303
mosquitoes captured in a horse-baited stable trap in southeast louisiana.a mosquito study based on collections from horse-baited stable traps was conducted in 1993 and 1994 at 3 sites in geographically and ecologically distinct areas of st. tammany parish (southeastern louisiana) to determine the major horse-feeding mosquito species that could be possible bridging and epidemic vectors of eastern equine encephalomyelitis virus. a total of 4,535 mosquitoes in 1993 and 23,906 in 1994 involving 26 species were collected, of which, depending on the site, culex salinarius, ...200312825665
arbovirus surveillance in south carolina, 1996-98.arboviruses isolated and identified from mosquitoes in south carolina (usa) are described, including new state records for eastern equine encephalitis virus (eee), st. louis encephalitis virus (sle), flanders virus, tensaw virus (ten), and a variant of jamestown canyon virus (jc). mosquitoes were collected at 52 locations in 30 of 46 south carolina counties beginning in june 1996, and ending in october 1998, and tested for arboviruses. of 1,329 mosquito pools tested by virus isolation (85,806 mo ...200111345423
application of geographic information technology in determining risk of eastern equine encephalomyelitis virus transmission.geographic information system (gis) technology and remote sensing were used to identify landscape features determining risk of eastern equine encephalomyelitis virus (eee) transmission as defined by the abundance of culiseta melanura (the enzootic vector) and 6 putative epidemic-epizootic vectors in massachusetts. landsat thematic mapper data combined with aerial videography data were used to generate a map of landscape elements at epidemic-epizootic foci in southeastern massachusetts. geographi ...200010757488
toward the incrimination of epidemic vectors of eastern equine encephalomyelitis virus in massachusetts: abundance of mosquito populations at epidemic foci.putative epidemic/epizootic eastern equine encephalomyelitis virus (eee) vector populations were compared at 15 recent (1982-90) human and horse case sites in bristol and plymouth counties in southeastern massachusetts. carbon dioxide-baited american biophysics corporation light traps were used for trapping adult mosquitoes to estimate biting risk in these foci of known transmission. population data suggest that coquillettidia perturbans, aedes canadensis, and culex salinarius are more likely ve ...199910612612
multiple isolations of eastern equine encephalitis and highlands j viruses from mosquitoes (diptera: culicidae) during a 1996 epizootic in southeastern connecticut.thirty-six isolations of eastern equine encephalitis virus were obtained from 8 species of mosquitoes collected from 5 september through 18 october 1996 during an epizootic in southeastern connecticut. these included culiseta melanura (coquillett) (19 isolates), culex pipiens l. (8), culiseta morsitans (theobald) (3), aedes sollicitans (walker) (2), aedes cantator (coquillett) (1), aedes trivittatus (coquillett) (1), aedes vexans (meigen) (1), and coquillettidia perturbans (walker) (1). isolatio ...19989615549
vector competence of mosquitoes (diptera:culicidae) from massachusetts for a sympatric isolate of eastern equine encephalomyelitis virus.we tested susceptibility to per os infection and potential salivary transmission for eastern equine encephalomyelitis (eee) virus in aedes canadensis (theobald), aedes vexans (meigen), anopheles quadrimaculatus (say), anopheles punctipennis (say), coquillettidia perturbans (walker), and culex salinarius (coquillett). culiseta melanura (coquillett), the documented enzootic vector of eee virus, was our control. based on these estimates of laboratory vector competence and other behavioral and ecolo ...19979151501
eastern equine encephalitis virus in ohio during 1991.during august and september of 1991, an epizootic of eastern equine encephalitis (eee) virus in horses occurred in wayne and holmes countries, oh. this was the first recorded epizootic of eee virus in the state. twelve horses were confirmed positive for eee virus through virus isolation or seroconversion, and seven additional horses with compatible symptoms were in close spatial and temporal proximity to the confirmed cases and were presumed to have died from eee virus. the outbreak was centered ...19938094461
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