“[It] does not include a countrywide lockdown. I’m going to lock down the virus,” Mr. Biden told WESH-TV in Florida.

He also said he doesn’t have the power to institute a national mask mandate, which the former vice president had talked up earlier in the campaign.

Mr. Biden said he does have the authority to mandate mask-wearing on federal property and in interstate travel.

He said some Republican governors are being “smarter” than President Trump about combating the coronavirus.