The rainy season in Cambodia, which lasts from May to October, is a key problem in trying to control diseases like dengue. Because of a lack of indoor plumbing in many homes, people collect rainwater in vats, creating potential breeding grounds for mosquitoes.

In Cambodia, as with many places around the world, parents first try treating their child at home. If that doesn't work, they typically then go to a local clinic. A hospital visit, which often involves a long trip, is a last resort.