Polio (Deadly Diseases and Epidemics) by Alan Hecht
English | 28 Feb. 2009 | ISBN: 1604132388 | 117 Pages | PDF | 2 MB
Until the middle of the 20th century, polio affected people all over the world. The disease, caused by a virus in the genus Enterovirus, often left its survivors with weakened muscles or varying degrees of paralysis. In their later years, many once-healthy survivors experienced a condition known as post-polio syndrome.
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