Diseases, Conditions, Syndromes
Wisconsin reports first West Nile virus case of the year
Health officials have confirmed Wisconsin's first human case of West Nile virus in 2025.
Jul 30, 2025
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West Nile Virus
Diseases, Conditions, Syndromes
West Nile virus found in mosquito samples in California's Orange County
Public health officials on July 22 said mosquito samples collected in Anaheim and Garden Grove have tested positive for West Nile virus, the first confirmed virus activity this year.
Jul 23, 2025
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Diseases, Conditions, Syndromes
Colorado's first human cases of West Nile virus in 2025 confirmed in Adams County
Colorado's first human cases of West Nile virus this year were confirmed in two people who contracted the disease in Adams County, public health officials said on July 17.
Jul 18, 2025
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Diseases, Conditions, Syndromes
University steps up search for disease-spreading threats
The University of Minnesota is stepping up efforts to identify biological threats that could trigger an epidemic, launching an institute to track disease-spreading infectious pathogens at the genetic level and monitor wastewater ...
Jul 2, 2025
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Diseases, Conditions, Syndromes
Public health officials confirm state's first human West Nile case of the year
The first human case of West Nile virus in Illinois has been confirmed by the U.S. Centers for Disease Control, according to the Illinois Department of Public Health.
Jun 25, 2025
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Diseases, Conditions, Syndromes
West Nile virus detected in Massachusetts 'earlier' than normal
West Nile virus has been detected in mosquitoes for the first time this year in the Bay State, according to the Department of Public Health.
Jun 18, 2025
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Diseases, Conditions, Syndromes
2,770 cases of arboviral disease reported in 48 states and D.C. in 2023
In 2023, 48 states and the District of Columbia reported 2,770 human arboviral disease cases, with West Nile Virus (WNV) being the most common, according to research published in the June 12 issue of the U.S. Centers for ...
Jun 17, 2025
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Diseases, Conditions, Syndromes
West Nile virus found in the UK for the first time: What you need to know
For the first time, traces of the West Nile virus have been found in mosquitoes in the UK, according to a report published this week by the UK Health Security Agency.
May 25, 2025
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Health
A changing climate may jeopardize global blood supply
A new study published in The Lancet Planetary Health suggests a changing climate threatens the continuous availability of safe blood across the world.
Apr 16, 2025
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Diseases, Conditions, Syndromes
How Zika virus knocks out our immune defenses
Zika virus and dengue virus are very close relatives. Both are mosquito-borne flaviviruses, and both specialize in infecting a host's dendritic cells.
Mar 25, 2025
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West Nile virus (WNV) is a virus of the family Flaviviridae. Part of the Japanese encephalitis (JE) antigenic complex of viruses, it is found in both tropical and temperate regions. It mainly infects birds, but is known to infect humans, horses, dogs, cats, bats, chipmunks, skunks, squirrels, domestic rabbits, crows, robins, crocodiles and alligators. The main route of human infection is through the bite of an infected mosquito. Approximately 90% of West Nile Virus infections in humans are without any symptoms.
Image reconstructions and cryoelectron microscopy reveal a 45–50 nm virion covered with a relatively smooth protein surface. This structure is similar to the dengue fever virus; both belong to the genus Flavivirus within the family Flaviviridae. The genetic material of WNV is a positive-sense, single strand of RNA, which is between 11,000 and 12,000 nucleotides long; these genes encode seven non-structural proteins and three structural proteins. The RNA strand is held within a nucleocapsid formed from 12 kDa protein blocks; the capsid is contained within a host-derived membrane altered by two viral glycoproteins.
This text uses material from Wikipedia licensed under CC BY-SA
