The perpetually wet and warm climate in Southeast Asia ensures that
there is never a shortage of mosquitoes. Ranging from covert
ankle-biters to ridiculously sized creatures fit for a horror movie, mozzies - as the Australians affectionately call them - are always looking for a free meal.
Aside from being a nuisance while traveling in Southeast Asia,
mosquitoes pose two real threats: disease and infection. Scratching
mosquito bites with dirty fingernails in a tropical environment can
quickly turn a tiny problem into a fever-causing infection. Oozing
mosquito bites on legs are a common site found on backpackers in
Southeast Asia.
While mosquitoes will probably prove to be only a slight nuisance
during your trip to Southeast Asia, the tiny insects are far more
nefarious than snakes or any other creature encountered in the wild. The
World Health Organization estimates that approximately 20,000 people
die per year due to snakebite, but malaria - delivered by mosquitoes - kills more than fifty times that number of people annually.
Add other mosquito-borne illnesses to the threat and suddenly humans
appear to be loosing the battle. Special care should be given to
preventing mosquito bites on your trip to Southeast Asia.
Why do Mosquitoes Bite?
Despite their size, mosquitoes are actually the deadliest creatures
on Earth; scores of studies have taken place for determining how to
prevent mosquito bites. Both male and female mosquitoes prefer to feed
on flower nectar, however females switch to an all-protein diet of blood
when they are ready to reproduce. Strangely, studies show that mosquitoes prefer to bite men over women; overweight people are at greater risk.
Mosquitoes can hone in on carbon dioxide emitted from breath and skin
from over 75 feet away. While hiding or holding your breath are not
practical, taking proper measures can decrease your risk for bites.
How to Prevent Mosquito Bites
- You are most at risk for mosquito bites - particularly in the islands - as the sun lowers; use extra caution at dusk.
- Pay attention under the tables when eating in Southeast Asia. Mosquitoes would love to enjoy you as a meal while you eat your own.
- Wear earth tones, khaki, or neutral clothing while trekking. Studies show that mosquitoes are more attracted to bright clothing.
- If staying in a place with a mosquito net, use it! Check for holes and apply DEET to any breeches. Do the same for any broken window screens around your accommodation.
- Mosquitoes are attracted to body odor and sweat; stay clean to avoid attracting unnecessary attention from mosquitoes and clean travel mates.
- Female mosquitoes normally feed on flower nectar when not trying to reproduce - avoid smelling like one! Sweet-smelling fragrances in soap, shampoo, and lotion will attract more biters.
- Unfortunately, DEET remains the most effective known way to prevent mosquito bites. Reapply smaller concentrations of DEET every three hours to exposed skin.
- Although the hot climate usually dictates otherwise, the most natural way to prevent mosquito bites is to expose as little skin as possible.
- Gecko lizards, considered lucky in Southeast Asia, eat several mosquitoes a minute. If you are lucky enough to have one of these little friends in your room, let her stay!
- Make a habit of closing your bathroom door after checking in to your accommodation; even small amounts of standing water give mosquitoes a better chance.
DEET - Safe or Toxic?
Developed by the U.S. Army, DEET is the most popular way to control
mosquitoes despite the ill effects on skin and health. Concentrations up
to 100% DEET can be purchased in the U.S., however Canada barred sales
of any repellent containing more than 30% DEET due to its high toxicity.
Contrary to folklore, higher concentrations of DEET are no more effective for preventing mosquito bites than lower concentrations.
The difference is that higher DEET concentrations are effective longer
between applications. The Centers for Disease Control and Prevention
recommends that a solution of 30 - 50% DEET be reapplied every three hours for maximum safety.
When used in conjunction with sunscreen, DEET should always be applied to skin first before sun protection. DEET lowers the effectiveness of sunscreen; avoid products that combine both. Read more about how to avoid sunburn in Southeast Asia.
Do not apply DEET under your clothes or on your hands, inevitably you will forget and end up rubbing your eyes or mouth!
DEET Alternatives for Preventing Mosquito Bites
- Icaridin: Also called Picaridin, the World Health Organization promotes the use of icaridin as a DEET alternative. The repellent is odorless and causes less skin irritations than DEET. Even the Australian army has adopted its use in the field.
- Lemon Eucalyptus Oil: Oil from the lemon eucalyptus is considered a safe, natural alternative to DEET, although it is less effective and liberal doses must be used.
- Skin-So-Soft: Avon Skin-So-Soft (compare prices) contains an agent known as IR3535 which is effective for repelling mosquitoes for short durations.
Mosquito Coils
A cheap, popular way to prevent mosquito bites in Southeast Asia is
to burn mosquito coils under your table or while sitting outside. Coils
are made from pyrethrum, a powder derived from chrysanthemum plants, and
burn slowly to provide protection for hours; never burn mosquito coils
inside!
Mosquitoes and Dengue Fever
While malaria receives most of the spotlight, the World Health
Organization estimates that mosquitoes cause at least 50 million cases
of dengue fever each year. Before 1970 only an estimated nine countries
held a risk for Dengue Fever. Now dengue fever is endemic in 100
countries; Southeast Asia is considered the region with the highest risk.
Unfortunately there is no vaccination or preventative for dengue fever other than to avoid being bitten in the first place.
The spotted mosquitoes that carry dengue fever typically bite during the day,
while the species that carries malaria prefers to bite at night.
Chances are high that you would survive an infection, but dengue fever
will certainly ruin an otherwise fantastic trip!
Source : http://about.com
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