Another source of chest pain is the esophagus, the tube that carries food from your mouth to your stomach. Acid backing up (refluxing) from the stomach into the esophagus causes pain that can mimic a heart disorder, as can spasms of the esophagus.
Ebola virus disease (EVD), formerly known as Ebola haemorrhagic fever, is a severe, often fatal illness in humans. The virus is transmitted to people from wild animals and spreads in the human population through human-to-human transmission. The average EVD case fatality rate is around 50%.
It's the number of people who die from an illness divided by the number of people diagnosed with it. But in the current outbreak, the proportion of infected people dying is far lower than 90%. That 90% figure actually comes from one outbreak of ebola which took place in the Congo between 2002 and 2003.