itsbob
I bowl overhand
By 1964, the oral polio vaccine (OPV), developed by Albert Sabin, had become the recommended vaccine. OPV allowed large populations to be immunized because it was easy to administer, and it provided "contact" immunization, which means that an unimmunized person who came in contact with a recently immunized child might become immune, too. The problem with OPV was that, in very rare cases, paralytic polio could develop either in immunized children or in those who came in contact with them.
Since 1979 (when wild polio was eliminated in the United States), the approximately 10 cases per year of polio seen in this country were traced to OPV.
IPV is a vaccine that stimulates the immune system of the body (through production of antibodies) to fight the virus if it comes in contact with it. IPV cannot cause polio.
Sounds like your research is current and up to date..
IF IT WAS 1979!!!
Since 1979 (when wild polio was eliminated in the United States), the approximately 10 cases per year of polio seen in this country were traced to OPV.
IPV is a vaccine that stimulates the immune system of the body (through production of antibodies) to fight the virus if it comes in contact with it. IPV cannot cause polio.
Sounds like your research is current and up to date..
IF IT WAS 1979!!!