Mosquito pupae are different from many other holometabolous insects in that the pupae are mobile and reply to stimuli. They're best used in small areas over brief-term periods, akin to camping journeys. The repellent is discovered in their smoke or vapor so areas where the smoke or vapor does not reach are not protected. Ann T. MacIntyre, DO, a Miami-based mostly osteopathic physician specializing in infectious diseases, notes that research has found some persons are extra liable to mosquito bites. In 1981, Cuba experienced a significant DHF outbreak, killing 159 individuals (Nelson 1984). Though outbreaks within the United States are still rare, Mexico is experiencing main dengue outbreaks, and its close proximation might lead to outbreaks in the United States. A smaller bloodmeal produces fewer eggs (Nelson 1986). Eggs are laid on damp surfaces in areas likely to briefly flood, such as tree holes and man-made containers, and are laid singly, rather than in a mass. With one blood meal, a female mosquito can lay up to 300 eggs.