Dr. Jonas Salk
Jonas Salk
In the 1950s, Salk developed the first polio vaccine, an injection. In 1962, Sabin developed the oral polio vaccine, taken by mouth, and still used, at present.
I think that polio was virulent before 1955 when the vaccine was developed. Now, I think, since we have developed a vaccine, it isn't as virulent.
Jonas Salk developed the first polio vaccine in 1952.
Albert Sabin founded the oral polio vaccine and the vaccine was licensed in 1962.
Jonas Salk developed the polio vaccine, known as the inactivated polio vaccine (IPV). The vaccine was used to prevent poliomyelitis, a highly infectious viral disease that can cause paralysis and, in severe cases, death.
The first dose of the polio vaccine, developed by Dr. Jonas Salk, was administered in 1954 during a large-scale field trial. This inactivated poliovirus vaccine (IPV) was introduced to combat poliomyelitis, which had caused widespread outbreaks and paralysis. The vaccine was proven effective, leading to mass immunization efforts that dramatically reduced polio cases worldwide. Subsequently, an oral polio vaccine (OPV) developed by Dr. Albert Sabin became widely used in the early 1960s.
He developed the polio vaccine.
Jonas Salk in 1952
Jonas Salk
Jonas Salk. just visit this web site http://en.wikipedia.org/wiki/Polio_vaccine。。。nashie^_~
1950's The first polio vaccine, called the Salk vaccine, was developed by Jonas Salk and became available in 1955. In 1962 the Sabin or oral vaccine developed by Albert Sabin became available.