Whether you're relaxing in a campground, or pitching a camp in the remotest regions of Alaska, a reliable shelter is essential to not only your enjoyment of the experience, it can be a matter of survival.
According to one source, the first verified case of giardia lamblia was in the Aspen, Colorado area, in 1975. Since that time, giardia has appeared in many remote areas, including Alaska. Giardia is carried in the intestinal tract of an infested mammal, and makes its way into the water by defecation. Giardia cysts are ingested by drinking contaminated water, and the cycle begins again. Giardia can cause multiple side effects, but the most common are diarrhea, bloating, intestinal cramps and moderate to severe weight loss. Some carriers are asymptomatic, and may not be aware that they carry the organism (for more on the causes, symptoms, prevention and treatment of giardia, read "Don't Drink the Water" by Michael Strahan).
Stoves for your Alaska back-country adventure come in all sizes and styles, use different fuel sources and are designed for different purposes. Your choice depends mostly on the kind of trip you're taking, what you intend to do with it and to a certain extent, the time of year you are camping.