Transmission (CDC, Atlanta, Georgia)
Because the natural reservoir of ebolaviruses has not yet been proven, the manner in which the virus first appears in a human at the start of an outbreak is unknown. However, researchers have hypothesized that the first patient becomes infected through contact with an infected animal.
When an infection does occur in humans, there are several ways in which the virus can be transmitted to others. These include:
- direct contact with the blood or secretions of an infected person
- exposure to objects (such as needles) that have been contaminated with infected secretions
The viruses that cause Ebola HF are often spread through families and friends. (www.cdc.gov)