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Transcript
LIFE CYCLE OF THE EBOLA VIRUS One of the deadliest known viruses, Ebola can have a fatality rate of up to 90%. Infection triggers a severe immune response that damages cells and causes massive internal bleeding and organ failure. 1. Dendrite 2. Ebola virus The virus first attacks and invades dendrites — cells that alert the body to infection. By doing this, the virus can evade the immune system and begin replicating itself. 3. Infected cells rupture, releasing more virus particles into the body as well as a flood of cytokines — molecules that cause fever and inflammation. This “cytokine storm” damages blood vessels and causes internal bleeding. 4. Neutrophils Certain white blood cells called neutrophils, which would normally fight an infection, can act as carriers and spread the Ebola virus throughout the body. Sources: World Health Organization, Centers for Disease Control and Prevention, Wikipedia, National Public Radio After the virus has spread through the body, death is most often attributed to severe blood loss and massive organ failure. Graphic: Grayson Mendenhall