>> reporter: the u.s. now averaging more than 43,000 new covid cases a day, a 65% increase over the last week. the colored regions on the map showing the highest cases. >> you're watching this freight train come that go delta is going to sweep across the south and so many people are getting to get infected with this fake narrative that if you are young and healthy and take care of yourself you're not going to get sick. knots the true. seeing all of these young people get hospitalized knowing its preventable is heartbreaking. >> reporter: about eight months into u.s. vaccination efforts and still more than half of the nation remains unvaccinated and unprotected. friday marked one of the lowest daily vaccination averages since january according to the cdc. >> there's spillover into vaccinated people. we could all bring this to a close if everyone who were unvaccinated would just come in, get vaccinated tomorrow.