Symptoms of ebola and why they occur
Early Stages
The scary thing about Ebola is that it is very hard to distinguish it's symptoms from lots of other viruses like the flu, yellow fever and malaria. This makes it hard to catch it in its early stages. The Ebola virus has an incubation period of 2-21 days which means a person would have Ebola but show no symptoms nor would the virus be contagious. Then the victim would start getting the early symptoms of Ebola which are fever, muscle ache, vomiting and abdominal pain. At this point the virus is contagious.
Later Stages
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Later symptoms include: rashes, bleeding from the eyes and gums, drops in blood pressure, blood clots, organ failure and eventually death. All these symptoms have to do with one of the things that the Ebola virus does to humans; it damages the circulatory system. So the victim would get bleeding in abnormal areas like the eyes and gums because of ruptured blood vessels or in other words, blood vessels that have burst. Also the victim's blood pressure would drop because of physiological shock which means that not enough blood was supplied to certain tissues in his/her body to meet basic requirements. And all of this sums up to Ebola causing hemorrhagic diseases (external and internal bleeding).