| polyomavirus jc genotypes in an urban united states population reflect the history of african origin and genetic admixture in modern african americans. | the human polyomavirus jc (jc virus), a small, circular, double-stranded dna virus, has a worldwide distribution and is excreted harmlessly in urine by 20% to 70% of adults. dna sequence analysis has identified seven distinct genotypes that likely coevolved with modern humans, although the mode of virus transmission is unknown. type 1 is european in its distribution. types 2 and 7 are asian, while types 3 and 6 are african. type 4, closely related to type 1, is of uncertain origin, having been f ... | 2000 | 11126728 |
| markers of past infection with simian virus 40 (sv40) and risk of incident non-hodgkin lymphoma in a maryland cohort. | simian virus 40 (sv40) genome sequences have been detected in human non-hodgkin lymphoma (nhl) tissues, and past infection with sv40 may be a risk factor for nhl. we conducted a population-based nested case-control study to investigate the association between serum antibodies to sv40 and incident nhl. two research serum banks were established in washington county, md, with >45,000 volunteers contributing blood samples collected in 1974 and 1989. incident cases of nhl diagnosed through 2002 (n = ... | 2005 | 15941954 |
| serum antibodies to jc virus, bk virus, simian virus 40, and the risk of incident adult astrocytic brain tumors. | genomic sequences of the human polyomaviruses, jc virus (jcv) and bk virus (bkv), and simian virus 40 (sv40) have been reported from several types of human brain tumors, but there have been no population-based seroepidemiologic studies to evaluate the association between polyomavirus infection and brain tumors. we conducted a case-control study, nested within a prospective cohort, to investigate the association between antibodies to jcv, bkv, and sv40, as measured in serum collected 1-22 years b ... | 2003 | 12750243 |
| isolations of jamestown canyon virus (bunyaviridae: california serogroup) from mosquitoes (diptera: culicidae) in the western united states, 1990-1992. | nearly 80,000 immature and adult mosquitoes in three genera were collected in high-elevation (> 1,000 m) areas of california (68,229), nevada (3,721), oregon (5,918), and washington (1,629) during 1990-1992 and tested for virus as adult males or females in 1,799 pools. collections comprised primarily alpine aedes in the aedes communis (de geer) group of the subgenus ochlerotatus. thirteen strains of jamestown canyon (jc) virus were recovered by plaque assay in vero cell culture from three member ... | 1993 | 7903698 |