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Causes of West Nile fever

Causes of West Nile fever

West Nile fever is caused by the bite of a mosquito infected with the West Nile virus.

Primary Cause of West Nile fever

The primary cause of West Nile fever is the result:

  • of an infectious agent.

West Nile fever Causes: Risk Factors

The following conditions have been cited in various sources as potentially causal risk factors related to West Nile fever:

West Nile fever: Related Medical Conditions

To research the causes of West Nile fever, consider researching the causes of these these diseases that may be similar, or associated with West Nile fever:

West Nile fever: Causes and Types

Causes of Broader Categories of West Nile fever: Review the causal information about the various more general categories of medical conditions:

West Nile fever as a complication of other conditions:

Other conditions that might have West Nile fever as a complication may, potentially, be an underlying cause of West Nile fever. Our database lists the following as having West Nile fever as a complication of that condition:

What causes West Nile fever?

Article excerpts about the causes of West Nile fever:

NIAID Research on West Nile and Related Viruses, NIAID Fact Sheet: NIAID (Excerpt)

Since then, researchers have been monitoring and testing birds throughout the northeast United States for evidence of West Nile virus. Although health officials hoped the virus would not survive the first winter, in early spring 2000 it re-emerged in birds and mosquitoes. In addition to crows, at least 25 other infected bird species have now been identified. (Source: excerpt from NIAID Research on West Nile and Related Viruses, NIAID Fact Sheet: NIAID)

West Nile Virus Questions and Answers: DVBID (Excerpt)

West Nile virus has been commonly found in humans and birds and other vertebrates in Africa, Eastern Europe, West Asia, and the Middle East, but until 1999 had not previously been documented in the Western Hemisphere. It is not known from where the U.S. virus originated, but it is most closely related genetically to strains found in the Middle East. (Source: excerpt from West Nile Virus Questions and Answers: DVBID)

West Nile Virus Questions and Answers: DVBID (Excerpt)

Infected mosquitoes are the primary source for West Nile virus. Although ticks infected with West Nile virus have been found in Asia and Africa, their role in the transmission and maintenance of the virus is uncertain. However, there is no information to suggest that ticks played any role in the cases identified in the United States. (Source: excerpt from West Nile Virus Questions and Answers: DVBID)

West Nile Virus Virology: DVBID (Excerpt)

All flaviviruses (e.g., West Nile [shown here], St. Louis encephalitis, dengue, Japanese encephalitis, tick-borne encephalitis, yellow fever, etc.) share a common size (40-60nm), symmetry (enveloped, icosahedral nucleocapsid), nucleic acid (positive-sense, single stranded RNA approximately 10,000-11,000 bases), and appearance in the electron microscope. Therefore, images of West Nile virus are representative for this group of viruses. (Source: excerpt from West Nile Virus Virology: DVBID)

Medical news summaries relating to West Nile fever:

The following medical news items are relevant to causes of West Nile fever:

Related information on causes of West Nile fever:

As with all medical conditions, there may be many causal factors. Further relevant information on causes of West Nile fever may be found in:

 

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