Malaria is a major health issue in Africa, with about 150 million cases and 450 deaths a year. Ignell a professor at the Swedish University of Agricultural Science carried out a research on ways of preventing mosquitoes from biting humans and spreading malaria.His research group studied , a major malaria-carrying species of mosquitoes in sub-Saharan Africa.
For the most part, Ignell's group found no pattern. Sometimes the mosquitoes bit goats; sometimes they bit sheep. In fact, they bit most animals — with one exception: chickens.