In 2014, Ebola swept through the countries of West Africa, becoming the largest epidemic in the region. Curiously enough, the pathogens of hemorrhagic fever are five viruses transmitted by bats and monkeys.
The symptoms of fever are very severe: weakness, headache, abdominal pain, bleeding from the mucous membranes, and dehydration.
In the 1970s, the fatality reached 90%. Nowadays it is significantly lower but there is no vaccine that has been successfully tested on humans. The Ebola outbreak eased in December 2015. According to the World Health Organization, it claimed the lives of more than 22 thousand people.