He's referring to replication in the nasal passage[1], which was already expected[2] and has nothing to do with overall viral titers in the blood stream nor wit

He's referring to replication in the nasal passage[1], which was already expected[2] and has nothing to do with overall viral titers in the blood stream nor with ADE. ADE would have been detected long before the first trials from last year ended (see tylerhou's comment). "As the Associated Press notes, Walensky cited data from the last few days, still unpublished, taken from 100 samples from vaccinated and unvaccinated individuals with COVID infections. They found that the amount of virus in the noses and throats of vaccinated infected people was nearly "indistinguishable" from what was found in unvaccinated people, confirming what some experts have suspected." 1. https://sfist.com/2021/07/27/cdc-confirms-that-viral-loads-in-vaccinated-people-with-delta-are-indistinguishable-from-unvaccinated/ https://sfist.com/2021/07/27/cdc-confirms-that-viral-loads-i... 2. https://pubmed.ncbi.nlm.nih.gov/33320052/ https://pubmed.ncbi.nlm.nih.gov/33320052/