Spirit
of Healing
West
Nile Virus
Q:
What are West Nile virus, West Nile fever, and West Nile encephalitis?
A. West Nile virus is a flavivirus commonly found in
Africa, West Asia, and the Middle East. It is closely related
to St. Louis encephalitis virus found in the United States.
The virus can infect humans, birds, mosquitoes, horses and some
other mammals.
West
Nile fever is a case of mild disease in people, characterized
by flu like symptoms. West Nile fever typically lasts only a
few days and does not appear to cause any long-term health effects.
More
severe disease due to a person being infected with this virus
can be West Nile encephalitis, West Nile meningitis, or West
Nile meningoencephalitis. Encephalitis refers to an inflammation
of the brain, meningitis is an inflammation of the membrane
around the brain and the spinal cord, and meningoencephalitis
refers to inflammation of the brain and the membrane surrounding
it.
Q.
Where did West Nile virus come from?
A. 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.
Q.
Historically, where has West Nile encephalitis occurred worldwide?
A. See the map describing distribution of flaviviruses,
including West Nile virus: Click Here
Q.
How long has West Nile virus been in the U.S.?
A. It is not known how long it has been in the U.S., but
CDC scientists believe the virus has probably been in the eastern
U.S. since the early summer of 1999, possibly longer.
Q.
I understand West Nile virus was found in "overwintering"
mosquitoes in the New York City area in early 2000. What does
this mean?
A. One of the species of mosquitoes found to carry West
Nile virus is the Culex species, which survives through
the winter, or "overwinters," in the adult stage.
That the virus survived along with the mosquitoes was documented
by the widespread transmission during the summer of 2000.
Q.
Is West Nile virus now established in the Western Hemisphere?
A. The continued expansion of West Nile virus in the United
States indicates that it is permanently established in the Western
Hemisphere.
Q.
Is the disease seasonal in its occurrence?
A. In the temperate zone of the world (i.e., between latitudes
23.5° and 66.5° north and south), West Nile encephalitis cases
occur primarily in the late summer or early fall. In the southern
climates where temperatures are milder, West Nile virus can
be transmitted year round.
Symptoms
Q.
What are the symptoms of West Nile virus infection?
A. Most people who are infected with West Nile virus will
not have any type of illness. It is estimated that 20% of the
people who become infected will develop West Nile fever: mild
symptoms, including fever, headache, and body aches, occasionally
with a skin rash on the trunk of the body and swollen lymph
glands.
The
symptoms of severe infection (West Nile encephalitis, meningitis,
and meningoencephalitis) include headache, high fever, neck
stiffness, stupor, disorientation, coma, tremors, convulsions,
muscle weakness, and paralysis. It is estimated that 1 in 150
persons infected with West Nile virus will develop a more severe
form of disease.
Q.
What is the incubation period in humans (i.e., time from infection
to onset of disease symptoms) for West Nile encephalitis?
A. Usually 3 to 14 days.
Q.
How long do symptoms last?
A. Symptoms of mild disease will generally last a few
days. Symptoms of severe disease may last several weeks, although
neurological effects may be permanent.
Q.
I think I have symptoms of West Nile virus infection. What should
I do?
A. Contact your health care provider if you have concerns
about your health. If you or your family members develop symptoms
such as high fever, confusion, muscle weakness, and severe headaches,
you should see your doctor immediately.
Common
Sense Approaches to West Nile Virus
The
best way to avoid the virus is to avoid mosquito bites. Mosquitoes
are most active at dusk and dawn. They live in damp areas with
standing water. It is safest to avoid such areas. There are
also mosquito repellants to help keep them away. Try to use
natural repellants and avoid ones with chemical pesticides as
they may harm you.
It
is not always possible to completely avoid mosquitoes altogether.
You can help protect yourself by keeping your immune system
strong. A strong immune system will be better able to ward off
the virus before it can work its way deeper inside. All the
usual things like eating right and getting enough sleep are
advisable. There are also some herbal products to boost your
immune system. Ginseng products do just that. In fact most of
the
Astragals,
Deer Tail, Ginseng Tonic, Royal Jelly, Goldenseal,
Echinacea,
and Bee Pollen are all used to improve the immune system.
If
you should find yourself with flu-like symptoms Natures Sunshine
VSC capsules or VSC liquid should be used immediately as they
are Chinese herbs used for fighting viral infections.
If
the symptoms worsen such as severe headache or high fever, contact
your doctor without further delay. Whether or not it is West
Nile Virus, the symptoms are severe and you should seek the
advice of a doctor. The odds are that, if bitten by a West Nile
Virus carrying mosquito, you will never even notice any symptoms.
If you do notice symptoms, and they are mild, you may be able
to fight it off on your own or with the help of herbal medicines.
But, if the symptoms become severe or you are weak to begin
with, don’t take any chances; contact your physician right away!