到1979年，由阿尔伯特·沙宾（Albert Sabin）博士发明，无需注射，其实篮球教学。美国的病例数减少到161个。
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Albert Sabin came up with a vaccine shortly after Salk, which he claimed was more effective (debatable).
FORBES: How Much Money Did Jonas Salk Potentially Forfeit By Not Patenting The Polio Vaccine?
The organization funded the two vaccines -- created by Jonas Salk and Albert Sabin -- that would lead to the protection of most of the world against polio.
CNN: Why polio hasn't gone away yet
Albert Sabin died in 1993 at the age of 86.
CNN: Commentary: Heroes in lab coats
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