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. Once effective vaccines were developed, polio was
eradicated in the United States and other countries, although it
still remains a threat in many developing areas. This revised
edition of ""Polio"" contains new illustrations and updated
coverage of all aspects of this disease, including the latest
vaccination information, world outbreak and immunization
statistics, and a progress report on international efforts to
eradicate polio.The chapters include: The History of Polio; The
Transmission of Polio and How It Affects the Body;Vaccines and How
They Work; Just When We Thought It Was Safe: Post-Polio
SyndromeWhat Lies Ahead? And, The Future of Polio.
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