West Nile virus in the vertebrate world.
- Journal Article
- Review
Summary
The article presents a comprehensive review of the incidence, transmission, and control of West Nile virus (WNV) infections among various vertebrate species, emphasizing the virus’s extensive host range and the development of veterinary vaccines against the infection.
Overview of West Nile Virus in Vertebrates
The research paper begins with a general introduction to West Nile Virus (WNV), a member of the Flaviviridae family, originally detected in Africa, Asia, and southern parts of Europe. WNV has increasingly been linked with outbreaks of encephalitis in humans and equines as well as infections in a wide range of vertebrate species:
- Over 150 bird species and at least 30 other types of vertebrates are susceptible to WNV.
- The severity of the infection can depend on the species, the age of the animal, its immune status, and the pathogenicity of the WNV strain.
Transmission of West Nile Virus
The paper then focuses on the transmission of WNV among vertebrates:
- Certain birds like passeriforms, young chickens, and domestic geese exhibit high levels of viremia (presence of the virus in the bloodstream), thereby allowing the virus to be transmitted through arthropods (insects).
- In other vertebrates such as lemurs, lake frogs, and hamsters, appropriate viremia levels for arthropod-borne transmission can also be developed.
- However, the role of vertebrates in non-arthropod-borne transmission, such as through virus-infected organs, tissues, or excretions, is less clear, with more research needed to determine the amounts of infectious virus necessary for this type of transmission.
Control of West Nile Virus Infections
Regarding the control of WNV infections in veterinary medicine and future perspectives, the article underlines:
- The growing significance of WNV infections has led to the development of various types of veterinary vaccines, including killed, live-attenuated, DNA-recombinant, and chimeric vaccines.
In conclusion, the article emphasizes the importance of further research into control measures for WNV, given its expansive host range and the role of various vertebrates in its transmission. It suggests that this information could lead to more effective strategies for managing and preventing WNV infections.
Cite This Article
Publication
Researcher Affiliations
- Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
MeSH Terms
- Animal Diseases / virology
- Animals
- Horse Diseases / transmission
- Horse Diseases / virology
- Horses
- Humans
- Vertebrates
- West Nile Fever / epidemiology
- West Nile Fever / transmission
- West Nile Fever / veterinary
- West Nile virus
Citations
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