| mosquito-borne arboviruses in arctic america. | mosquito-borne arboviruses are prevalent throughout subarctic regions of canada and alaska, principally in the boreal forest extending between latitudes 53 and 66 degrees n, but they have been identified in tundra regions as far north as 70 degrees n. all mosquito-borne agents have been bunyaviruses, comprising principally the snowshoe hare subtype of california encephalitis (ce) virus, but also northway virus. mosquito vectors comprise several aedes species and culiseta inornata, all of which h ... | 1975 | 1602 |
| a comparison of la crosse virus isolated obtained from different ecological niches and an analysis of the structural components of california encephalitis serogroup viruses and other bunyaviruses. | analyses of the oligonucleotide fingerprints of the three genome ribonucleic acid (rna) species of 11 isolates of la crosse (lac) virus, obtained from various ecological niches in the northern united states and compared to those of prototype lac virus, showed that in each place from which these isolates were obtained lac variants and varieties were present with related, but distinguishable, nucleotide sequences for their large, medium, or small rna species. the rna genomes of prototypes trivitta ... | 1979 | 453439 |
| seroepidemiology of california and bunyamwera serogroup bunyavirus infections in humans in california. | several human populations in california were surveyed cross-sectionally and longitudinally for neutralizing antibodies to selected arthropod-borne bunyaviruses in the california and bunyamwera serogroups. overall, the prevalence of antibodies to california serogroup viruses was 6.4% in 702 individuals sampled during 1963-1988. comparative antibody titers in individual sera indicated that 4.1% and 1.6% of these infections were caused by viruses similar or identical to jamestown canyon and califor ... | 1992 | 1357960 |
| vector competence of california mosquitoes for california encephalitis and california encephalitis-like viruses. | mosquitoes collected from coastal, inland valley, and alpine locations in california were evaluated for their experimental vector competence for two viruses in the california serogroup (bunyaviridae:bunyavirus). aedes squamiger, a coastal salt marsh mosquito, was an efficient vector of a california encephalitis (ce)-like virus isolated from its habitat (89% of the pledget-fed females became infected and 61% transmitted virus). aedes dorsalis, a coastal mosquito, and ae. melanimon, an inland vall ... | 1992 | 1360192 |
| isolation of northway serotype and other bunyamwera serogroup bunyaviruses from california and oregon mosquitoes, 1969-1985. | eight previously untyped bunyamwera serogroup bunyaviruses that had been isolated from mosquitoes collected in california and oregon between 1969 and 1985, were identified by cross-neutralization tests. four viruses from anopheles freeborni and a virus from aedes sierrensis collected in butte county in the central valley of california in 1970-71 were shown to belong to the northway serotype. the existence of a northway serotype virus in california had been inferred from previous serologic survey ... | 1991 | 1677543 |
| prevalence of neutralizing antibodies against california and bunyamwera serogroup viruses in deer from mountainous areas of california. | plaque reduction-serum dilution neutralization was used to evaluate the status of bunyavirus activity in deer in mountainous areas of california. antibodies against 9 bunyaviruses were measured in 337 mule deer (odocoileus hemionus hemionus, o. hemionus californicus, and o. hemionus inyoensis) and black-tailed deer (o. hemionus columbianus). more deer from high mountainous areas had neutralizing antibodies against jamestown canyon virus than did deer from low mountainous areas (23% vs. 9%; p les ... | 1989 | 2496610 |
| taxonomy, classification, and geographic distribution of california serogroup bunyaviruses. | | 1983 | 6346334 |
| vector competence of selected mosquito species (diptera: culicidae) for california strains of northway virus (bunyaviridae: bunyavirus). | selected mosquito species from central valley, coastal, and alpine habitats of california were evaluated for their vector competence for northway (nor) virus. culiseta incidens thomson, culiseta inornata (williston), and anopheles freeborni aitken were the only competent vectors when fed virus. aedes sierrensis (ludlow), as well as alpine snow pool aedes (i.e., ae. cataphylla dyar, ae. hexodontus dyar, ae. increpitus dyar and ae. tahoensis dyar), ae. melanimon dyar, ae. washinoi lanzaro & eldrid ... | 1993 | 8099625 |
| tropism of bunyaviruses: evidence for a g1 glycoprotein-mediated entry pathway common to the california serogroup. | the california serogroup is composed of antigenically and biologically related viruses within the bunyavirus genus of the bunyaviridae. we used a large panel of murine cells to study their tissue tropisms and found virtually identical patterns of viral replication among all of the members of this serogroup, in contrast to other members of the family (bunyamwera, cache valley, and punta toro viruses). by analyzing the nonpermissive infections with both an rna dot-blot and a virus binding assay, w ... | 1995 | 8553534 |
| geographic distribution and serologic and genomic characterization of morro bay virus, a newly recognized bunyavirus. | more than 75,000 immature mosquitoes in three genera were collected from coastal california, reared to the adult stage, and tested for virus by plaque assay in vero cell cultures. twenty-six strains of morro bay (mb) virus, a newly recognized member of the california (cal) serogroup, were isolated from aedes squamiger, a pestiferous salt marsh mosquito species restricted to intertidal salt marshes in coastal california and baja california. the geographic distribution of the isolates was 10 from ... | 1996 | 8686772 |
| california encephalitis in alabama. | arthropod-borne virus (arbovirus) infections in humans are primarily central nervous system infections, but other clinical manifestations include febrile illness and fever with hemorrhagic diathesis. in the genus bunyavirus there are several viruses that cause disease in humans, especially in north america; these include lacrosse, jamestown canyon, trivittatus, and snowshoe hare viruses. the disease seen mainly in children is california encephalitis (usually of the lacrosse subtype); this infect ... | 1996 | 8865793 |
| seroepidemiology of california and bunyamwera serogroup (bunyaviridae) virus infections in native populations of alaska. | this study investigated the geographic distribution and prevalence of antibodies to california and bunyamwera serogroup viruses in native populations of alaska, and demographic and ecologic risk factors associated with exposure. sera (n = 1,635) from 18 communities were screened using an elisa. all age groups were tested for antibodies to jamestown canyon (jc), inkoo (ink), snowshoe hare (ssh), and northway (nor) viruses; persons > or = 45 years old (n = 90) from six communities were additionall ... | 1999 | 10344657 |
| detection of anti-arboviral immunoglobulin g by using a monoclonal antibody-based capture enzyme-linked immunosorbent assay. | monoclonal antibody (mab)-based capture enzyme-linked immunosorbent assays (elisas) for the detection of anti-arboviral immunoglobulin g (igg elisas) were developed for a comprehensive array of medically important arboviruses from the alphavirus, flavivirus, and bunyavirus genera. tests were optimized and standardized so that maximum homology could be maintained among working parameters for the different viral agents, enabling a wide range of viruses to be easily tested for at one time. mabs wer ... | 2000 | 10790108 |
| detection of arboviral rna directly from mosquito homogenates by reverse-transcription-polymerase chain reaction. | many arthropod-borne viruses (arboviruses) are important human pathogens medically. the development of an effective technique to detect the viruses by using nucleic acid amplification, such as polymerase chain reaction (pcr), improves not only clinical diagnosis but also virologic surveillance of mosquito vectors in the field. in this study, the development of an improved and simplified assay is described for detection of mosquitoes infected with eastern equine encephalitis (eee) virus, cache va ... | 2001 | 11337046 |
| first isolation of la crosse virus from naturally infected aedes albopictus. | la crosse (lac) virus, a california serogroup bunyavirus, is the leading cause of pediatric arboviral encephalitis in the united states and an emerging disease in tennessee, west virginia, and north carolina. human cases of lac encephalitis in tennessee and north carolina have increased above endemic levels during 1997 to 1999 and may represent an expansion of a new southeastern endemic focus. this report describes the isolation of lac virus from the exotic mosquito aedes albopictus. the discove ... | 2001 | 11747692 |
| prevalence of antibodies against saint louis encephalitis and jamestown canyon viruses in california horses. | jamestown canyon (jc) and saint louis encephalitis (sle) viruses are mosquito-transmitted viruses that have long been present in california. the objective of this study was to determine the seroprevalence of these two viruses in horses prior to the introduction of west nile (wn) virus. approximately 15% of serum samples collected in 1998 from 425 horses on 44 equine operations horses throughout california had serum antibodies to jc virus, whereas antibodies were not detected to sle virus. the re ... | 2004 | 15001316 |
| genetic relationships of jamestown canyon virus strains infecting mosquitoes collected in connecticut. | jamestown canyon virus (jcv) (family bunyaviridae, genus orthobunyavirus) is maintained in a mosquito-deer cycle and has been implicated in the etiology of meningitis and encephalitis with human cases reported from ontario, canada, michigan, connecticut, and new york. despite the recognition of symptomatic cases in the northeastern united states, little is known about the genetic relationships of jcv variants circulating in this region. accordingly, we compared the phylogenetic relationships of ... | 2007 | 18165540 |
| isolations of jamestown canyon virus (bunyaviridae: orthobunyavirus) from field-collected mosquitoes (diptera: culicidae) in connecticut, usa: a ten-year analysis, 1997-2006. | jamestown canyon virus (jcv) (bunyaviridae: orthobunyavirus) is a mosquito-borne zoonosis belonging to the california serogroup. it has a wide geographic distribution, occurring throughout much of temperate north america. white-tailed deer, odocoileus virginianus are the principal amplification hosts, and boreal aedes and ochlerotatus mosquitoes are the primary vectors. a 10-year study was undertaken to identify potential mosquito vectors in connecticut, quantify seasonal prevalence rates of inf ... | 2008 | 18386967 |
| possible congenital infection with la crosse encephalitis virus--west virginia, 2006-2007. | la crosse encephalitis virus (lacv) is a mosquitoborne bunyavirus of the california encephalitis serogroup. during 2003--2007, west virginia had the greatest number of cases (95) and highest incidence of lacv disease (5.1 cases per 100,000 population) of any state.* the majority of persons infected with lacv either have no symptoms or a mild febrile illness; a limited number experience encephalitis. although only 1%--4% of those infected with lacv develop any symptoms, children aged <16 years ar ... | 2009 | 19145220 |
| tensaw virus genome sequence and its relation to other bunyaviridae. | tensaw virus (tsv) belongs to the genus orthobunyavirus within the bunyaviridae family. although tsv does not cause hemorrhagic fever as some other members of its family, serological studies have shown that serum from florida residents react against tsv indicating viral infection in humans. in this study, the three rna genome segments of a tsv isolated from anopheles crucians mosquitoes collected in north central florida in 2006 and a tsv isolate obtained from the cdc, fort collins, were sequenc ... | 2009 | 19760176 |
| la crosse virus neuroinvasive disease - missouri, 2009. | la crosse virus (lacv), a california serogroup bunyavirus, is a leading cause of pediatric arboviral encephalitis in the united states and is transmitted primarily by the eastern treehole mosquito (aedes triseriatus). on august 7, 2009, the missouri department of health and senior services (mdhss) was notified of suspected lacv neuroinvasive disease in a boy aged 8 years from northwest missouri. laboratory testing at cdc confirmed lacv infection. an environmental inspection identified multiple v ... | 2010 | 20651642 |
| human jamestown canyon virus infection --- montana, 2009. | jamestown canyon virus (jcv) is a mosquito-borne zoonotic pathogen belonging to the california serogroup of bunyaviruses. although jcv is widely distributed throughout temperate north america, reports of human jcv infection in the united states are rare. this is the first report of human jcv infection detected in montana, one of only 15 cases reported in the united states since 2004, when jcv became reportable. on may 26, 2009, a man aged 51 years with no travel history outside of montana went t ... | 2011 | 21617630 |