The most common types of illnesses are caused by contaminated food and water. Especially in developing countries, drink only bottled, boiled, or purified water and drinks; don't drink from public fountains or use ice. You should even consider using bottled water to brush your teeth. Make sure food has been thoroughly cooked and is served to you fresh and hot; avoid vegetables and fruits that you haven't washed (in bottled or purified water) or peeled yourself. If you have problems, mild cases of traveler's diarrhea may respond to Imodium (known generically as loperamide) or Pepto-Bismol. Be sure to drink plenty of fluids; if you can't keep fluids down, seek medical help immediately.
Infectious diseases can be airborne or passed via mosquitoes and ticks and through direct or indirect physical contact with animals or people. Some, including Norwalk-like viruses that affect your digestive tract, can be passed along through contaminated food. If you are traveling in an area where malaria is prevalent, use a repellent containing DEET and take malaria-prevention medication before, during, and after your trip as directed by your physician. Condoms can help prevent most sexually transmitted diseases, but they aren't absolutely reliable and their quality varies from country to country. Speak with your physician and check the CDC or World Health Organization Web sites for health alerts, particularly if you're pregnant, traveling with children, or have a chronic illness.
National Centers for Disease Control and Prevention (800/232–4636 international travelers' health line. www.cdc.gov.)
World Health Organization (www.who.int.)
Specific Issues in New Zealand
General health standards in New Zealand are high, and it would be hard to find a more pristine natural environment.
The major health hazard in New Zealand is sunburn or sunstroke. Even people who are not normally bothered by strong sun should cover up with a long-sleeve shirt, a hat, and pants or a beach wrap. At higher altitudes you will burn more easily, so apply sunscreen liberally before you go out—even for a half hour—and wear a visor or sunglasses.
Dehydration is another serious danger that can be easily avoided, so be sure to carry water and drink often. Limit the amount of time you spend in the sun for the first few days until you are acclimatized, and avoid sunbathing in the middle of the day.
There are no venomous snakes, and the only native poisonous spider, the katipo, is a rarity. The whitetail spider, an unwelcome and accidental import from Australia, packs a nasty bite and can cause discomfort but is also rarely encountered.
One New Zealander you will come to loathe is the tiny black sand fly (some call it the state bird), common to the western half of the South Island, which inflicts a painful bite that can itch for several days. In other parts of the country, especially around rivers and lakes, you may be pestered by mosquitoes. Be sure to use insect repellent.
One of New Zealand's rare health hazards involves its pristine-looking bodies of water; don't drink water from natural outdoor sources. Although the country's alpine lakes might look like backdrops for mineral-water ads, some in the South Island harbor a tiny organism that can cause "duck itch," a temporary but intense skin irritation. The organism is found only on the shallow lake margins, so the chances of infection are greatly reduced if you stick to deeper water. Streams can be infected by giardia, a waterborne protozoal parasite that can cause gastrointestinal disorders, including acute diarrhea. Giardia is most likely contracted when drinking from streams that pass through an area inhabited by mammals (such as cattle or possums). There is no risk of infection if you drink from streams above the tree line.
Less common, but a risk nevertheless, is the possibility of contracting amoebic meningitis from the water in geothermal pools. The illness is caused by an organism that can enter the body when the water is forced up the nose. The organism is quite rare, but you should avoid putting your head underwater in thermal pools or jumping in them. Also remember not to drink geothermic water.
Popular headache, pain, and flu medicines are Nurofen (contains Ibuprofen), Panadol (contains Paracetamol), and Dispirin (contains Aspirin). Dispirin often comes as large tabs, which you must dissolve in water. Many Kiwi households and wheelhouses have a green tube of Berocca, the soluble vitamin supplement often taken the morning after a big night out.
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