These diseases, ranging from dengue fever and malaria to West Nile virus and yellow fever, are the cause of millions of deaths worldwide, yet control methods have become a dilemma due to the development of resistance by mosquitoes and increased concern about health and environmental hazards.
That same liberalization presented Tusher with a dilemma: The government's friendlier posture toward development meant that someone might someday build condos on the 65, 000-acre sheep ranch surrounding his resort.