Deep-pocketed philanthropists Bill and Melinda Gates have now pledged a staggering $250 million (£200m) to tackle the global COVID-19 pandemic, having upped their original donation by an additional $150 million (£120m). The money is helping to fund the treatment-focused COVID-19 Therapeutics Accelerator, which the couple's foundation set up alongside Mastercard and Wellcome, as well as virus testing and food assistance in low and middle-income countries.

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The rich and famous donating fortunes to combat COVID-19