Gates said he was picking the top seven vaccine candidates and building manufacturing capacity for them. "Even though we'll end up picking at most two of them, we're going to fund factories for all seven, just so that we don't waste time in serially saying, 'OK, which vaccine works?' and then building the factory," he said.
Gates said that simultaneously testing and building manufacturing capacity is essential to the quick development of a vaccine, which Gates thinks could take about 18 months.
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