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Richard (Tom) Thomson, PhD, Director of the Microbiology Laboratory and Division Head of Clinical Pathology at NorthShore, provides answers to some common questions regarding the Ebola virus:
How is it transmitted? It is not known to be airborne. Ebola is passed through direct contact with bodily fluids and specimens from patients infected with the virus. So it is family, caretakers and healthcare workers with close contact to an infected person who face the greatest risk if they don’t take the right precautions.
Can you contract Ebola from contact with someone who does not exhibit any symptoms? No. An individual who is infected but not exhibiting symptoms is not contagious. If a person is symptomatic, he or she can spread the virus but only through direct contact with bodily fluids, such as blood. So, as an example, if you were sitting next to someone on a plane who developed symptoms of Ebola a week or 10 days later, you were not at risk for infection because they were asymptomatic at the time.
How are American healthcare workers being infected with the virus? Unfortunately, the ability of healthcare workers in Africa to protect themselves is different from the ability of healthcare workers to protect themselves in the United States. They do not have the facilities that we have here in this country. In the U.S., we have the facilities and training to handle many different infections of various risks. And while Ebola presents one of the greatest risks to healthcare workers, we have procedures in place that will be used to handle any Ebola patients who enter the country.
How is the spread of the virus to the United States being prevented? The Centers for Disease Control (CDC) and the World Health Organization (WHO) have specific procedures in place to follow if they feel that someone on a plane is symptomatic. That person would arrive in the United States and be put immediately in the appropriate containment in one of our hospitals. They also have screening efforts ongoing in West Africa to prevent symptomatic persons from getting on planes. By following those procedures, the spread of the virus into the United States is very unlikely.