Due to body fluids of an infected person. These include blood, sweat, vomit, urine, feces, saliva and semen. These liquids must find an entry point in another person, they can penetrate through a cut or scratch. The virus can also be passed, if someone touches the nose, mouth or other the eyes with contaminated hands. Or someone is injected with the contaminated liquids. That is why health staff wear gloves and other protective equipment.
The World Health Organization announced that blood, stool and vomit are the most infectious fluids. In saliva the virus was discovered only in severely ill people, sweat he had not yet been removed.