The History of the West Nile Virus

Where did it come from?weakened immune systems or chronic disease
The West Nile virus was first isolated in 1937 inand the risk of serious health issues pertaining to
the West Nile district of Uganda. The disease hasthe virus increase with age. The risk of being
spread through many parts of Europe and Asia,infected with the West Nile virus is greatest
as well as North and Southduring July and August, peak mosquito season.
America.How did it spread?However, it is good to keep in mind that mosquito
We do not know exactly how the virus spreadseason lasts from as early as mid April until after
but there are several theories. Most likely thethe first hard frost usually in October.Stopping the
West Nile virus was imported to other countriesspread
by a bird or mosquito that was infected by theThe very best way to avoid contacting the
disease. The virus has been found in over 150West Nile virus is by minimizing your exposure to
different types of birds including: crows, ravens,mosquitoes. Other ways to help stop the spread
blue jays and magpies. Out of the 74 differentof the West Nile virus include:Eliminate mosquito
species of mosquitoes found in all parts ofbreeding grounds around your home (these include
Canada, only ten have been found to carry theplaces where standing water can collect such as
West Nile virus.How is the West Nile viruswading pools, empty flower pots and bird baths)
transmitted?Report any dead birds found in your area to the
Mosquitoes become carriers of the West Nilelocal authorities.
virus after feeding on the blood of birds infectedUse insect repellants that contain DEET and install
with the virus. The West Nile virus is transmittedscreens in your windows and doors
to people through the bite of an infectedUse mosquito netting when camping
mosquito. Recently, scientists have discoveredKeep in mind that although the West Nile virus is
that people can become infected with the Westnot likely to disappear any time in the near future,
Nile virus through other ways like bloodit is important to remember that the risk of
transfusions and organ/tissue transplants. There is,contacting the West Nile virus is low and the risk
however, no evidence to suggest that theof serious health effects from the disease even
disease can be contracted by kissing or touchinglower.Karen Foster is the content manager and
someone who is infected with it.The West Nileeditor for Tiny Mosquito: Understanding the
virus poses the greatest risk to those withMosquito.