Almost 15 million Americans have skipped their second COVID-19 shot Sentara Healthcare is taking vaccines to the people to bring that number down. They're setting up on beaches and at parties with some live music. Author: Sarah Hammond Updated: 11:19 PM EDT July 7, 2021 HAMPTON, Va. — The CDC says about 15 million Americans have skipped their second dose of the COVID-19 vaccine. That’s more than one in 10 people. Now, the delta variant has become the dominant strain in the country and healthcare workers say it’s more important than ever to get that shot. "The second does help to provide that full immunity for COVID," said Jillian Carpenter with Sentara Family and Internal Medicine.