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laboratory vector competence of culex (melanoconion) cedecei for sympatric and allopatric venezuelan equine encephalomyelitis viruses.laboratory vector competence of culex (melanoconion) cedecei was examined for venezuelan equine encephalomyelitis (vee) viruses. colonized adult female mosquitoes originating from a southern florida population were given bloodmeals from viremic hamsters circulating various titers of 3 hemagglutination inhibition (hi) subtypes of vee viruses. following extrinsic incubation of about 3 weeks, mosquitoes were allowed to refeed on uninfected hamsters for transmission trials. cx. cedecei was highly ef ...19863706626
clinical, clinicopathologic, and epidemiologic features of anhidrosis in central florida thoroughbred horses.a group of 834 thoroughbred horses was surveyed on four central florida farms for clinical and epidemiologic features of anhidrosis. in addition, comparative analysis was made of serum thyroxine, serum electrolytes, and fractional urinary electrolyte excretion ratios. an overall disease prevalence of 6.12% was observed. training horses and nonpregnant broodmares had a predilection for the disease. adolescent horses were infrequently affected. there was no correlation with sex or color. comparati ...19873506097
equine culicoides hypersensitivity in florida: biting midges collected in light traps near horses.twenty-three species of culicoides were trapped near pruritic horses during a 2-year survey in florida. nearly 99% of the biting midges collected were represented by culicoides insignis lutz, c. edeni wirth and blandon, c. stellifer (coquillett), c. niger root and hoffman, c. haematopotus malloch and c. venustus hoffman. the relative contribution to the total catch by each of these species varied among collection sites. seasonally, different species attain their largest population sizes at diffe ...19882980168
identification of highlands j virus from a florida horse.a virus, strain 64a-1519, isolated from the brain of a horse dying of encephalitis in florida in 1964, was identified as western equine encephalomyelitis (wee) virus. recently, we used polyclonal and monoclonal immune reagents to identify this isolate by comparing it to 2 strains of wee virus and to highlands j (hj) virus in hemagglutination-inhibition, immunofluorescent antibody, and plaque-reduction neutralization tests. these tests demonstrate that strain 64a-1519 is a strain of hj virus dist ...19882849884
an update on aedes albopictus in florida.aedes albopictus has been reported from 2 florida counties. this note updates those 2 infestations and reports 9 new county records, tests of pooled mosquitoes for eastern equine encephalitis virus and the current status of regulations concerning waste tires in the state.19902370540
epidemiology of equine protozoal myeloencephalitis in north america based on histologically confirmed cases. a report.following a workshop on equine protozoal myeloencephalitis (epm) convened at the veterinary medical forum of the american college of veterinary internal medicine in 1988, this survey of epm in north america was developed. it is based upon 364 histologically confirmed case records from california, florida, illinois, kentucky, new york, ohio, oklahoma, ontario, pennsylvania, and texas up to 1988. the highest rate of infection was found in young thoroughbred, standardbred, and quarter horses. diffe ...19902342022
distribution of equine infectious anemia in equids in southeastern united states.state veterinarians in 11 southeastern states completed a questionnaire designed to determine the proportion of equids in the region that were seropositive for equine infectious anemia (eia). cases of eia were diagnosed in each of the states surveyed. distinct geographic clusters of cases were apparent in tennessee and kentucky adjacent to the mississippi river, in the piedmont of north carolina at the virginia border, in north central georgia, and throughout the florida peninsula. it is suggest ...19902173692
equine culicoides hypersensitivity in florida: biting midges aspirated from horses.nine species of culicoides were aspirated from horses in florida during the second phase of a study of equine culicoides hypersensitivity (chs). approximately 90% of the 2933 midges were culicoides insignis lutz, 4% were c.stellifer (coquillett), 3% were c.niger root and hoffman, 2% were c.alachua jamnback and wirth and the remaining 1% included c.venustus hoffman, c.scanloni wirth and hubert, c.lahillei iches (= c.debilipalpis lutz), c.pusillus lutz, and c.edeni wirth and blanton. culicoides we ...19902133005
distribution of st. louis encephalitis viral antibody in sentinel chickens maintained in sarasota county, florida: 1978-1988.sentinel chicken flocks monitored arboviral transmission at 12 sites in sarasota county, fla., from 1978 through 1988. during this time, 3,452 serum samples were analyzed for hemagglutination inhibition antibody to st. louis encephalitis virus (sle) and eastern equine encephalomyelitis virus (eee). overall, 91 chickens seroconverted to sle and three to eee. the intensity of sle transmission showed considerable year-to-year variation. chickens from south-county flocks were more likely to seroconv ...19912033613
eastern equine encephalitis--florida, eastern united states, 1991.the florida department of health and rehabilitative services (hrs) has confirmed five human cases of eastern equine encephalitis (eee) in elderly residents of bradford, duval, and washington counties in northern florida. dates of illness onset were in mid-june and early july. one patient partially recovered and has residual neurologic deficits, two patients remain comatose, and two patients died.(abstract truncated at 250 words)19911861668
from the centers for disease control. eastern equine encephalitis virus--florida, 1991. 19921740844
eastern equine encephalitis virus associated with aedes albopictus--florida, 1991. 19921736088
isolation of eastern equine encephalitis virus from aedes albopictus in florida.fourteen strains of eastern equine encephalitis (eee) virus were isolated from aedes albopictus mosquitoes collected in polk county, florida. these are the first isolations of an arbovirus of proven public health and veterinary importance from naturally infected ae. albopictus in the united states since established populations of this introduced mosquito were first discovered in 1985. the widespread distribution of ae. albopictus in florida and in other areas of the united states where eee is en ...19921321985
detection of venezuelan equine encephalitis virus in rural communities of southern florida by exposure of sentinel hamsters.venezuelan equine encephalitis (vee) virus strains were recovered from sentinel hamsters exposed in close proximity to homes in rural south florida. sentinel hamster surveillance methods over extended periods offer one effective way of uncovering vee virus activity in relation to human habitation.19751155708
arbovirus surveillance in florida: wild vertebrate studies 1965-1974.wildlife species from 38 of florida's 67 counties were surveyed over a 10 year period for the presence of antibody to the five major arboviruses circulating in the state. the routine screening of 7891 sera from wild birds and mammals via the hemagglutination-inhibition (h1) test with selected reactors subjected to serum neutralization testing has 1) provided information regarding geographic distribution and seasonality of circulation of these viruses 2) identified enzootic foci of infection and ...19751152173
hypercalcemia and calcinosis in florida horses: implication of the shrub, cestrum diurnum, as the causative agent.a chronic debilitating disease is described in florida horses. there is progress weight loss and lameness of increasing severity. plasma calcium is elevated to moderate or severe degree. anatomical changes include dystrophic calcinosis of elastic tissues, viz. major arteries, tendons and ligaments. a generalized osteopetrosis is present and may be related to hypoparathyroidsim and hypercalcitoninism. the presence of cestrum diurnum (day-blooming jessamine, day cestrum, wild jasmin) in areas acce ...19751112096
an evaluation of military sentry dogs as a sentinel system to everglades virus (venezuelan equine encephalitis fe3-7c strain). 1975812018
wildlife and environmental health: raccoons as indicators of zoonoses and pollutants in southeastern united states.inasmuch as terrestrial fauna are an integral part of our natural environment and are directly exposed to disease and pollutants, it follows that certain wild populations could serve to detect subtle alterations within ecosystems. a collection of studies on raccoons is presented to stimulate other researchers to develop the potential of our wildlife resources as monitors of environmental health. raccoons have been used as serologic sentinels for st louis encephalitis and venezuelan equine enceph ...1975170239
occurrence and distribution of western equine encephalomyelitis in florida.research and surveillance programs relating to the occurrence and distribution of western equine encephalomyelitis virus in florida, conducted between 1955 and 1976, suggest that the virus is (1) an endemic arbordae, (2) transmitted in a continuous cycle throughout the year by culiseta melanura mosquitoes, and (3) restricted to fresh water swamps and waterways in central, north, and northwest florida.197823372
antigenic relationship between the tokyo and the miami strains of equine influenza subtype 2 virus. 197721985
endemic eastern equine encephalomyelitis in florida: a twenty-year analysis, 1955-1974.research and surveillance programs relating to the circulation of eastern equine encephalomyelitis (eee) virus in florida between 1955 and 1974 are summarized. all available data suggest that eee virus is 1) endemic in many florida fresh water swamps and waterways, 2) active in a continuous cycle throughout the year with a peak between may and august, and 3) circulating in culiseta melanura. it has been isolated also from eight other mosquito species.197612669
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