Former Vice President Joe Biden says the Democratic National Convention that has already been delayed until August may need to be held virtually.

Biden said on ABC’s “This Week” it may not be possible to put tens of thousands of people in one place.

Biden has a commanding lead in delegates and needs to clinch his party’s presidential nomination as the coronavirus’ spread continues to reshape the race for the White House.

Biden says he plans to wear a mask in public. That conforms with federal guidelines that Americans use face coverings in public places. But it contradicts President Donald Trump, who says he’s choosing not do that.

“He may not like how he looks in a mask, but the truth of the matter is that follow the science,” Biden said. “That’s what they’re telling us.”