Highlights • There is a major public health need for GBS vaccines for maternal immunization.• Important obstacles lie in the way of a pivotal clinical efficacy trial for licensure.• A… Click to show full abstract
Highlights • There is a major public health need for GBS vaccines for maternal immunization.• Important obstacles lie in the way of a pivotal clinical efficacy trial for licensure.• A vaccine development pathway based on an immune correlate of protection is envisaged.• Key considerations and priority activities for success are presented, based on WHO consultations.
               
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