Joe Biden pledges 600m vaccine doses by end of July in town hall – live

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3.49am GMT

That's all for the live coverage tonight. Here are some highlights from Joe Biden's CNN town hall in Milwaukee:

3.19am GMT

At the end of the town hall, Biden says he has had conversations with living former presidents, with one exception", though he declines to elaborate or discuss what those conversations entailed. And the event has now ended after more than an hour of questions.