West Nile virus
causes an infection that can lead to inflammation of the brain (encephalitis), the spinal cord (myelitis), or the
tissues surrounding the brain and the spinal cord (meningitis). If
you have a fever and headache that continue for more than 2 or 3 days during
West Nile virus season, or if you have any of the more severe symptoms of West
Nile encephalitis, call your doctor immediately.
If your doctor
determines that you have a mild infection, make sure to drink plenty of fluids
and get lots of rest. You may feel well enough to continue your normal
activities. Talk to your doctor about whether you need to stay home.
You can take steps to lower your risk of mosquito bites:
- Stay indoors at dawn, at dusk, and in the early
evening, when mosquitoes are most active.
- Wear long-sleeved shirts
and long pants whenever you are outdoors and are likely to be where mosquitoes
- Avoid wearing floral fragrances from perfumes, soaps, hair
care products, and lotions. These may attract mosquitoes.
clothing with an
insect repellent containing permethrin or DEET
(N,N-diethyl-meta-toluamide), because mosquitoes may bite through thin
clothing. DEET can damage plastic items, such as watch crystals or eyeglass
frames, and some synthetic fabrics. You also can use natural products such as
soybean-based Bite Blocker.
- Apply insect repellent sparingly to exposed skin. An effective
repellent will contain 24% DEET. DEET in concentrations greater than 50% does
not provide any additional protection.
- Avoid applying repellent to
the hands of children. Repellents may irritate the eyes and
- Whenever you use an insecticide or insect repellent, be sure
to read and follow the directions for use.
- Do not keep open
containers of water near your house. Standing water is a breeding place for
Vitamin B and ultrasonic or ultraviolet (UV) devices such
as "bug zappers" are not effective in preventing mosquito bites.
Mosquito protection time of DEET
| Concentration of DEET|| Protection time (approximate)|