| isolation of west nile virus from mosquitoes, crows, and a cooper's hawk in connecticut. | west nile (wn) virus, a mosquito-transmitted virus native to africa, asia, and europe, was isolated from two species of mosquitoes, culex pipiens and aedes vexans, and from brain tissues of 28 american crows, corvus brachyrhynchos, and one cooper's hawk, accipiter cooperii, in connecticut. a portion of the genome of virus isolates from four different hosts was sequenced and analyzed by comparative phylogenetic analysis. our isolates from connecticut were similar to one another and most closely r ... | 1999 | 10600741 |
| west nile encephalitis: an emerging disease in the united states. | in 1999, an epidemic of west nile virus (wnv) encephalitis occurred in new york city (nyc) and 2 surrounding new york counties. simultaneously, an epizootic among american crows and other bird species occurred in 4 states. indigenous transmission of wnv had never been documented in the western hemisphere until this epidemic. in 2000, the epizootic expanded to 12 states and the district of columbia, and the epidemic continued in nyc, 5 new jersey counties, and 1 connecticut county. in addition to ... | 2001 | 11595987 |
| identification of avian- and mammalian-derived bloodmeals in aedes vexans and culiseta melanura (diptera: culicidae) and its implication for west nile virus transmission in connecticut, u.s.a. | to evaluate the host-feeding patterns of aedes vexans (meigen) and culiseta melanura (coquillett) as secondary vectors of west nile virus (family flaviviridae, genus flavivirus, wnv) in northeastern united states, we identified the source of vertebrate bloodmeals by sequencing portions of the cytochrome b gene of mitochondrial dna. analysis of polymerase chain reaction products from a total of 119 ae. vexans revealed that 92.4% of individuals acquired blood solely from mammalian and 2.5% from av ... | 2006 | 17017250 |
| application of a degree-day model of west nile virus transmission risk to the east coast of the united states of america. | a geographical information systems model that identifies regions of the united states of america (usa) susceptible to west nile virus (wnv) transmission risk is presented. this system has previously been calibrated and tested in the western usa; in this paper we use datasets of wnv-killed birds from south carolina and connecticut to test the model in the eastern usa. because their response to wnv infection is highly predictable, american crows were chosen as the primary source for model calibrat ... | 2012 | 23242676 |
| crow deaths as a sentinel surveillance system for west nile virus in the northeastern united states, 1999. | in addition to human encephalitis and meningitis cases, the west nile (wn) virus outbreak in the summer and fall of 1999 in new york state resulted in bird deaths in new york, new jersey, and connecticut. from august to december 1999, 295 dead birds were laboratory-confirmed with wn virus infection; 262 (89%) were american crows (corvus brachyrhynchos). the new york state department of health received reports of 17,339 dead birds, including 5,697 (33%) crows; in connecticut 1,040 dead crows were ... | 2001 | 11585521 |