In 1977, Jonas Salk, the creator of the polio vaccine, testified before a Senate subcommittee that �all polio outbreaks since 1961 were caused by the oral polio vaccine.�
In 1977, Jonas Salk, the creator of the polio vaccine, testified before a Senate subcommittee that �all polio outbreaks since 1961 were caused by the oral polio vaccine.�