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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
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
sampling methods for potential epidemic vectors of eastern equine encephalomyelitis virus in massachusetts.to determine which of 11 trapping methods best sampled populations of 6 potential epidemic vectors of eastern equine encephalomyelitis (eee) virus, we compared new jersey (nj) light trap, cdc light trap, cdc with octenol, cdc with co2, cdc with co2 plus octenol, american biophysics light trap with flickering light (ab flicker), ab steady light, ab flicker with octenol, ab flicker with co2, ab flicker with co2 plus octenol, and 3 resting boxes. there was no significant difference between cdc and ...19979474560
sampling with light traps and human bait in epidemic foci for eastern equine encephalomyelitis virus in southeastern massachusetts.to estimate human exposure to potential vectors of eastern equine encephalomyelitis (eee) virus, we compared collections of putative eee virus vectors from human biting collections with collections from cdc, ab (american biophysics), and new jersey light traps and resting boxes in enzootic/epidemic foci of eee virus in southeastern massachusetts. human biting collections caught significantly more host-seeking females than resting boxes or unbaited light traps (p < 0.05). regression analysis of h ...19979474561
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
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
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
isolation of eee virus from ochlerotatus taeniorhynchus and culiseta melanura in coastal south carolina.a 1-year arbovirus study was conducted at the wedge plantation located in coastal south carolina to determine the occurrence and level of arbovirus activity in mosquito species inhabiting the site. mosquito species composition and temporal abundance were also determined. a total of 45,051 mosquitoes representing 27 species in 9 genera was collected and identified during 130 trap-nights between august, 1997, and july, 1998. the most abundant species was culex salinarius (n = 20,954) followed by o ...200312674532
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
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
salt marsh as culex salinarius larval habitat in coastal new york.culex salinarius is considered one of the most likely bridge vectors involved in the human transmission cycle of west nile virus (wnv) and eastern equine encephalomyelitis virus (eeev) in the northeastern usa. the larval habitats of this species in the coastal region of new york state are currently poorly known. between 2005 and 2007, a larval survey was carried out to identify and characterize possible larval habitats in suffolk county, encompassing natural and man-made freshwater wetlands, art ...200818939687
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