So @moderna_tx has what looks like a very good nasal vaccine. Why haven't they got it into large scale clinical trials? https://
science.org/doi/10.1126/sc
iadv.adh1655
… "Our promising results show that mRNA-LNP vaccines have potential for effective administration
via the intranasal route."
Moderna’s Nasal mRNA Vaccine: Clinical Trial Delays Questioned
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