Top 10 deadly viruses in the world
- By Lu Na
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E-mail China.org.cn, August 19, 2014
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Plague
Plague, one of the three epidemic diseases reportable to the World Health Organization, is caused by the enterobacteria Yersinia pestis. It can be spread in the air or by direct contact. It is estimated that one particular outbreak of plague caused the deaths of about 30 percent of the population of Medieval Europe. It is treatable if detected early.
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