The Ebola virus can be spread in several ways. It may be spread through saliva from an animal or individual who is infected, touching a contaminated surface (such as a doorknob, or feces), a bite from an animal or insect that is infected, unclean needles or unscreened blood, and butchering or eating infected animals. You may run the risk of catching this virus by traveling to Africa or conducting animal research on animals imported from Africa. 

The Ebola Virus affects all he tissues and organs of the body, except for the skeletal muscles and bones. The virus attacks liver cells, endothelial cells, and cells of the immune system. The virus affects cell adhesion which affects blood vessel cells. This leads to blood vessel leaking, hemorrhaging, internal bleeding, and damage to solid tissues. The virus also causes several blood clots to form in the blood vessels, resulting in insufficient blood supply to major organs such as the liver, brain, lungs, kidneys, intestines, etc. The virus also attacks liver cells to impair the body's abilities to clear out toxins from the bloodstream and infect the immune system. By infecting the immune system, the virus can spread rapidly and reach other tissues of the body, resulting in organ failure. Organ failure can cause high fever, internal bleeding, diarrhea, and vomiting. Organ failure and internal bleeding resulting from the virus' infection can ultimately lead to death. Other common symptoms include abdominal pain, chest pain, muscle/joint pain, gastrointestinal complications, chills, dehydration, fatigue, fever, loss of appetite, malaise, and sweating. Severe symptoms include hemoptysis (coughing up blood), eye redness, headaches, delirium, erythema (reddening of the skin), and a sore throat.