Goodbye Alpha. Hello Delta. - a podcast by ABC News

There are lots of words that are used to describe the Delta coronavirus variant: highly contagious, very infectious, fast moving.

But maybe it's time to add the word successful.

The Delta variant has now overtaken the homegrown Alpha variant in the UK as the most dominant strain, and numbers are rising in the United States as well.

So on today's Coronacast, we look ahead as to what the rise of Delta might mean for the world.

Also on today's show:

* Why is there a variation state to state on vaccination rollouts?

* Evidence from Germany shows earlier detection and better treatment is lowering AstraZeneca clot mortality

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