In 1961, Dr. Albert Sabin developed an oral vaccine. Across the U.S., people lined up to swallow a simple sugar cube that had been injected with a weakened live polio virus. It worked. Today ...
It is an injectable, inactivated polio vaccine that is still used in some countries today. In the late 1950s and early 1960s, Dr. Albert Sabin developed a second, oral vaccine, and it was introduced ...
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