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| | Glossary | CDC Special Pathogens Branch |
 | | In an inapparent infection, there is no outward sign that an infectious agent has entered that person at all. |
 | | For example, although humans have become infected with Ebola-Reston, a species of Ebola virus, they have not shown any sign of illness. |
 | | By contrast, in recorded outbreaks of Ebola hemorrhagic fever caused by Ebola-Zaire, another species of Ebola virus, severe illness followed infection with the virus, and a great proportion of the case-patients died. |
| www.cdc.gov /ncidod/dvrd/spb/mnpages/glossary.htm (1810 words) |
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