UN says malaria cases drop but progress in Africa is slower

The number of malaria cases worldwide has dropped in recent years but the countries with the biggest outbreaks have made the least progress, according to a new report Tuesday by the World Health Organization. The vast majority of malaria cases and deaths are in Africa, where countries have achieved “slower-than-average declines” of about 32 percent in the last 15 years, the U.N. health agency said.