How does SARS-CoV-2 evade our immune defenses? It's a good question, actually. When SARS-CoV-2 defeats host defenses, we need to know how it does so, and conversely, when host defenses prevail, that also needs to be understood. ...
The worldwide Zika threat first emerged in 2015, infecting millions as it swept across the Americas. It struck great fear in pregnant women, as babies born with severe brain birth defects quickly overburdened hospitals and ...
Aug 9, 2017
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A team led by Purdue University researchers is the first to determine the structure of the Zika virus, which reveals insights critical to the development of effective antiviral treatments and vaccines.
Mar 31, 2016
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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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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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A team of Yale School of Medicine infectious diseases researchers recently conducted an in-depth review of the literature on how one genus of viruses, known as flaviviruses, manipulates mitochondria to evade immune responses. ...
Feb 26, 2025
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A study published in the journal iScience presents crucial insights into the ocular effects of Zika virus infection during pregnancy and offers promising avenues for therapeutic intervention.
Mar 28, 2024
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A new study has identified potential broad-spectrum antiviral agents that can target multiple families of RNA viruses that continue to pose a significant threat for future pandemics. The study, led by Gustavo Garcia Jr. in ...
Apr 28, 2023
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Researchers at Karolinska Institutet have in a new study used cellular reprogramming to create human three-dimensional brain models and infected these models with SARS-CoV-2. In infected models, the brain immune cells excessively ...
Oct 19, 2022
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Based on findings from a new study by a Johns Hopkins Medicine-led research team, an effective means of fighting SARS-CoV-2, the virus that causes COVID-19, may be possible that circumvents the problem of waning immunity ...
Sep 8, 2022
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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.
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