U.S. Needs 500 Million Doses to Vaccinate All 16 and Older

The U.S. needs 500 million doses of Covid-19 vaccine to fully inoculate everyone 16 and older, according to Andy Slavitt, the Biden administration’s deputy coordinator for pandemic response.

Slavitt, who spoke Wednesday at the first news briefing of the administration’s Covid-19 task force, said that estimate assumes a two-dose regimen and reflects only the vaccines that are currently on the market.

“We are not counting on things that are not in existence today,” he said. Trial results for Johnson & Johnson’s one-dose vaccine are expected within days and could change the calculus dramatically, if authorized for emergency use.

The ...