Salk or Sabin Vaccine Antibodies Being Passed from Mother to Child 

Original Post:  Do either the Salk or Sabin vaccines pass polio immunity to offspring? Can the oral vaccine actually cause polio?

Dr. Bruno’s Response: Mothers transfer antibodies in utero (however they are created, naturally or by vaccination), to their infants.  They remain protecting the child for about 6 months.

     The oral vaccine (OPV) can mutate once in several million doses and can do so in a child’s feces, giving a polio infection to the young child or two the unvaccinated person changing the diaper.  This is a very rare occurrence but is the reason the oral vaccine was discontinued in the United States in 2000.

     For those who are interested here is some in-depth information:

Maternal Antibodies: Clinical Significance, Mechanism of Interference

with Immune Responses, and Possible Vaccination Strategies

Richard L. Bruno, HD, PhD

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