Small percentage of people spread most Ebola cases: study

Most of the people infected with Ebola in the West Africa epidemic that began in 2014 got sick through contact with a small number of "superspreaders" with the disease, researchers said Monday. The study in the Proceedings of the National Academy of Sciences shows such "superspreaders" can be extremely dangerous when it comes to infectious disease outbreaks. The West African Ebola epidemic was the largest in history and killed more than 11,300 people, with many of the cases involving people infe