| powassan virus in ixodes cookei and mustelidae in new england. | powassan virus was recovered from a pool of 3 nymphal and 1 adult female ixodes cookei removed from a striped skunk (mephitis mephitis) trapped in massachusetts during 1967 and from a pool of 9 nymphal i. cookei from a long-tailed weasel (mustela frenata) captured in connecticut during 1978. virus was detected in the blood of both mammals. hemagglutination-inhibiting (hi) antibody to powassan virus was demonstrated in 16.0% of the skunks sampled in connecticut, and neutralizing antibody was dete ... | 1979 | 230364 |
| increased recognition of powassan encephalitis in the united states, 1999-2005. | powassan virus (powv) disease is a rare human disease caused by a tick-borne encephalitis group flavivirus maintained in a transmission cycle between ixodes cookei and other ixodid ticks and small and medium-sized mammals. during 1958-1998, only 27 powv disease cases (mostly powassan encephalitis) were reported from eastern canada and the northeastern united states (average, 0.7 cases per year). during 1999-2005, nine cases (described herein) of serologically confirmed powv disease were reported ... | 2008 | 18959500 |
| potential role of deer tick virus in powassan encephalitis cases in lyme disease-endemic areas of new york, u.s.a. | powassan virus, a member of the tick-borne encephalitis group of flaviviruses, encompasses 2 lineages with separate enzootic cycles. the prototype lineage of powassan virus (powv) is principally maintained between ixodes cookei ticks and the groundhog (marmota momax) or striped skunk (mephitis mephitis), whereas the deer tick virus (dtv) lineage is believed to be maintained between ixodes scapularis ticks and the white-footed mouse (peromyscus leucopus). we report 14 cases of powassan encephalit ... | 2013 | 24274334 |
| isolation of deer tick virus (powassan virus, lineage ii) from ixodes scapularis and detection of antibody in vertebrate hosts sampled in the hudson valley, new york state. | deer tick virus, dtv, is a genetically and ecologically distinct lineage of powassan virus (powv) also known as lineage ii powv. human incidence of pow encephalitis has increased in the last 15 years potentially due to the emergence of dtv, particularly in the hudson valley of new york state. we initiated an extensive sampling campaign to determine whether powv was extant throughout the hudson valley in tick vectors and/or vertebrate hosts. | 2013 | 24016533 |
| the role of mammalian reservoir hosts in tick-borne flavivirus biology. | small-to-medium sized mammals and large animals are lucrative sources of blood meals for ixodid ticks that transmit life-threatening tick-borne flaviviruses (tbfvs). tbfvs have been isolated from various organs obtained from wild-caught myodes and apodemus species in europe and asia. thus, these rodents are well-established reservoirs of tbfvs. wild-caught peromyscus species have demonstrated seropositivity against powassan virus, the only tbfv known to circulate in north america, suggesting tha ... | 2018 | 30234026 |
| powassan virus experimental infections in three wild mammal species. | powassan virus (powv) is a tick-borne virus maintained in sylvatic cycles between mammalian wildlife hosts and ticks (primarily ixodes spp.). there are two currently recognized lineages, powv-lineage 1 (powv-l1) and deer tick virus (dtv; lineage 2), both of which can cause fatal neurologic disease in humans. increased numbers of human case reports in the northeastern and north central united states in recent years have fueled questions into powv epidemiology. we inoculated three candidate wildli ... | 2021 | 33534764 |