| update: west nile virus activity--eastern united states, 2000. | data reported to cdc through the west nile virus (wnv) surveillance system have shown an increase in the geographic range of wnv activity in 2000 compared with 1999, the first year that wnv was reported in the western hemisphere. in response to this occurrence of wnv, 17 states along the atlantic and gulf coasts, new york city, and the district of columbia conducted wnv surveillance, which included monitoring mosquitoes, sentinel chicken flocks, wild birds, and potentially susceptible mammals (e ... | 2000 | 11105767 |
| pre-west nile virus outbreak: perceptions and practices to prevent mosquito bites and viral encephalitis in the united states. | mosquitoes can transmit over 100 of the viruses that can cause encephalitis, meningitis, and hemorrhagic disease in humans (chin 2000; gubler 1996; monath 1989). while much is known about the ecology, epidemiology, and clinical manifestations of the arboviral encephalitides (campbell et al. 2002; centers for disease control and prevention 1997; gubler 1998; hayes 1989; hubálek and halouzka 1999), little empirical research exists regarding the u.s. population's knowledge of mosquitoes and arbovir ... | 2003 | 14733669 |
| selected mosquito vectors of west nile virus: comparison of their ecological dynamics in four woodland and marsh habitats in delaware. | we compared human landing, co2-baited light trap, co2-baited omni-fay trap, and gravid trap collections of mosquitoes at 4 woodland and marsh sites with varied vegetative habitats in delaware during summer 2001. landing collections provided more consistent, but sometimes smaller, collection numbers than light traps. proportions of parous mosquitoes were also higher in landing than in light trap or omni-fay collections about 65% of the time. circadian feeding rhythms were observed for 3 suspected ... | 2004 | 15264622 |
| host-feeding patterns of suspected west nile virus mosquito vectors in delaware, 2001-2002. | paucity of data on host-feeding patterns and behavior of 43 mosquito species that are reported as suspected west nile virus (wn) vectors has limited full evaluation of their vectorial capacity. recent studies addressing this issue need additional confirmation and should also be expanded to include collections of species or subpopulations attracted to humans. we used 4 types of collection methods to collect mosquitoes, including omnidirectional fay-prince traps, centers for disease control-type l ... | 2005 | 16033122 |
| stormwater ponds, constructed wetlands, and other best management practices as potential breeding sites for west nile virus vectors in delaware during 2004. | we performed longitudinal surveys of mosquito larval abundance (mean mosquito larvae per dip) in 87 stormwater ponds and constructed wetland in delaware from june to september 2004. we analyzed selected water quality factors, water depth, types of vegetation, degree of shade, and level of insect predation in relation to mosquito abundance. the 2004 season was atypical, with most ponds remaining wet for the entire summer. in terms of west nile virus (wnv) vectors, wetlands predominantly produce a ... | 2006 | 17019774 |
| comparison of light traps, gravid traps, and resting boxes for west nile virus surveillance. | west nile virus surveillance was conducted at five sites in new castle county, de, and one site in salem county, nj, from june through september, 2004, using dry ice-baited centers for disease control miniature light traps, infusion-baited gravid traps, and resting boxes. all trap types were simultaneously placed at each site every two weeks and run overnight. collected mosquitoes were identified to species, pooled, and analyzed for virus using a real-time reverse transcriptase polymerase chain ... | 2007 | 18260519 |
| development of grid-like applications for public health using web 2.0 mashup techniques. | development of public health informatics applications often requires the integration of multiple data sources. this process can be challenging due to issues such as different file formats, schemas, naming systems, and having to scrape the content of web pages. a potential solution to these system development challenges is the use of web 2.0 technologies. in general, web 2.0 technologies are new internet services that encourage and value information sharing and collaboration among individuals. in ... | 2008 | 18755998 |
| epidemiology of west nile virus: a silent epiornitic in northern delaware in 2007 without associated human cases. | abstract. we performed a 2-year longitudinal study (2006-2007) of west nile virus (wnv) infections in wild birds, mosquitoes, and sentinel chickens at 6 wnv-endemic sites in northern delaware. we determined virus infection rates of culex pipiens and other mosquito vectors as well as seroprevalence and antibody titers of amplifying hosts. endemicity status varied widely among the 6 sites based on 3 criteria-mosquito infections, sentinel chicken seropositivity, and wild bird seropositivity. a high ... | 2010 | 21033054 |