One major takeway: Two doses is far better than one when it comes to the Delta variant from India.

Potentially big implications for UK: Extended interval btw doses may need to be revisited. And international travel unlikely to open up until bulk of population is *FULLY* vaxxed. pic.twitter.com/70HY3MkJrI

— Julianna Tatelbaum (@CNBCJulianna) June 4, 2021