Q&As on Transmission

What are body fluids?

Ebola has been detected in blood and many body fluids. Body fluids include saliva, mucus, vomit, feces, sweat, tears, breast milk, urine, and semen.

What does “direct contact” mean?

Direct contact means that body fluids (blood, saliva, mucus, vomit, urine, or feces) from an infected person (alive or dead) have touched someone’s eyes, nose, or mouth or an open cut, wound, or abrasion.

Can Ebola be spread by coughing or sneezing?

There is no evidence indicating that Ebola virus is spread by coughing or sneezing.  Ebola virus is transmitted through direct contact with the blood or body fluids of a person who is sick with Ebola; the virus is not transmitted through the air (like measles virus). However, droplets (e.g., splashes or sprays) of respiratory or other secretions from a person who is sick with Ebola could be infectious, and therefore certain precautions (called standard, contact, and droplet precautions) are recommended for use in healthcare settings to prevent the transmission of Ebola virus from patients sick with Ebola to healthcare personnel and other patients or family members.

How long does Ebola live outside the body?

Ebola is killed with hospital-grade disinfectants (such as household bleach). Ebola on dry surfaces, such as doorknobs and countertops, can survive for several hours; however, virus in body fluids (such as blood) can survive up to several days at room temperature.

Are patients who recover from Ebola immune for life? Can they get it again - the same or a different strain?

Recovery from Ebola depends on good supportive clinical care and a patient’s immune response. Available evidence shows that people who recover from Ebola infection develop antibodies that last for at least 10 years, possibly longer.

We don’t know if people who recover are immune for life or if they can become infected with a different species of Ebola.

If someone survives Ebola, can he or she still spread the virus?

Once someone recovers from Ebola, they can no longer spread the virus. However, Ebola virus has been found in semen for up to 3 months. Abstinence from sex (including oral sex) is recommended for at least 3 months. If abstinence is not possible, condoms may help prevent the spread of disease.

Can Ebola be spread through mosquitos?

There is no evidence that mosquitos or other insects can transmit Ebola virus. Only mammals (for example, humans, bats, monkeys and apes) have shown the ability to spread and become infected with Ebola virus.