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Ben Walker is a data journalist at the New Statesman.
Only six countries have recorded more cases than the American city, which now has more than 13,000.
Data from the most comparable periods suggests we will have more of both.
This page will use a combination of live data and regular updates to offer relevant figures on Covid-19 in the UK and the wider world.
Fewer than half of Warren’s supporters may defect to the second-placed senator.