Ebola outbreak: 5 things you need to know now --- The first case of Ebola in a patient diagnosed in a U.S. hospital was confirmed by the Centers for Disease Control and Prevention Tuesday. -- The patient did not have symptoms when leaving West Africa, but developed symptoms approximately four days after arriving in the U.S. on Sept. 20. --- 1.What are the chances that the Ebola virus will spread in the United States? Am I at risk? -- Close to zero, according to medical experts. --- The quality of medical care and facilities in the USA and Africa are completely different, said Thomas Geisbert, professor of microbiology and immunology at the University of Texas Medical Branch in Galveston. -- The areas where the outbreak has spread are "some of the poorest places on planet Earth," Geisbert said. --- In Africa, medical professionals sometimes don't have the proper protective gear and over-run facilities are having to turn away patients, he said. -- The virus is transmittedfrom wild animals to humans. Humans spread the virus through contact with blood or other body fluids of an infected person, as well as exposure to objects like contaminated needles, according to the CDC. --- 2. Is there a vaccine? -- No, there is currently no vaccine, although two are being tested right now. --- Although there are no proven therapies, several experimental ones are being developed. A handful of Ebola patients have received these experimental drugs, although supplies of one have been exhausted and supplies of another are very low. -- Some patients also have gotten blood transfusions from Ebola survivors, with the hope that a survivor's antibodies will help a sick person's immune system fight off the virus. --- Good supportive care also can save lives. This consists of the sort of routine care provided in American hospitals and intensive care units, such as monitoring patient's blood pressure, keeping them hydrated or helping them breathe – with machines, if needed. This help can keep patients alive until their immune system fights off the virus. --- 3. Should the people who came in contact with the latest victim of Ebola on the plane or at the airport be concerned? -- The CDC does not recommend that people on the same commercial airline flights ​undergo monitoring. Ebola is contagious only if the person is experiencing active symptoms. But anyone concerned may call 800-CDC-INFO. -- Read More, USA TODAY Network, http://www.usatoday.com/story/news/nation-now/2014/10/01/ebola-virus-what-you-need-to-know-outbreak/16524645/