Hype or hope? Nasal COVID-19 vaccines

Five billion dollars was just allocated to Operation Next Gen with one goal: speed the creation of next-generation COVID-19 vaccines and therapies, including nasal (mucosal) vaccines. I advocated for this at the White House, but it’s going to be a hard road. Here’s why.

What are mucosal vaccines? 

Mucosal vaccines, like ones administered in the nose, stim…