government has purchased enough vaccines to give booster shots to its entire population. .
Some Americans have already found ways to get additional doses of the Covid vaccines, with some even "mixing and matching" vaccines to receive extra shots from different companies.
Scott Gottlieb sees Covid vaccine boosters for vulnerable people in U.S.
Covid vaccination rates rise as Americans in hard-hit states rush to get shots amid delta fears?
"The South will come out of this in a couple of weeks but you're going to see cases start to pick up in the North [as well]," Gottlieb said, adding he doesn't believe the wave of infections will hit Northern states as heavily since they have higher vaccination ratesThis is a big country so this epidemic wave is going to hit different regions at different points in time," Gottlieb said
With more time, he said it may be discovered that spacing apart the first two doses of vaccine distribution may give people a more durable response against the virus