The spread of Ebola between people occurs only by direct contact with the blood or body fluids of a person after symptoms have developed.[1][3] Body fluids that may contain ebolaviruses include saliva, mucus, vomit, feces, sweat, tears, breast milk, urine, and semen.[23] Entry points include the nose, mouth, eyes, or open wounds, cuts and abrasions.[23] Contact with objects contaminated by the virus, particularly needles and syringes may also transmit the infection.[24] The virus is able to survive on objects for a few hours in a dried state and can survive for a few days within body fluids.[23] Ebola virus may be able to persist in the semen of survivors for up to seven weeks after recovery, which could give rise to infections via sexual intercourse.[1] Otherwise, people who have recovered are not infectious.[24] The potential for widespread infections in countries with medical systems capable of observing correct medical isolation procedures is considered low.[25] Usually when someone has symptoms, they are sufficiently unwell that they are unable to travel without assistance.[26]