A newly developed mouse model suggests that genetic factors are behind the mild-to-deadly range of reactions to the Ebola virus.
People exposed to Ebola vary in how the virus affects them. Some completely resist the disease, others suffer moderate to severe illness and recover, while those who are most susceptible succumb to bleeding, organ failure and shock.
In earlier studies of populations of people who have contracted Ebola, these differences are not related to any specific changes in the Ebola virus itself that made it more or less dangerous; instead, the body’s attempts to fight infection seems to determine disease severity.
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