It might not be until fall 2021 that Americans "can be completely safe" from COVID-19, Bill Gates said in a Tuesday interview with Judy Woodruff on PBS Newshour.
"The vaccine is critical, because, until you have that, things aren't really going to be normal," the billionaire philanthropist told Woodruff.
And so they have been able to avoid a large rebound," he said.
Beyond that, "returning to some semblance of normal," as Woodruff put it, can be predicted by watching the behaviors of other countries.
Sweden, for example, isn't "locking down quite as much," so their experience will be informative, Gates explained.