With national vaccinations ramping up to more than 2.5 million people per day, at least 34 states have made all adults eligible to receive one of three approved COVID-19 vaccines—or plan to by mid-April— as the United States continues to race to vaccinate as many people as possible while variant cases continue to rise."It's clear, there is a case for optimism; but there is not a case for relaxation," said Jeff Zients, coordinator of the White House's COVID-19 response, today during a White House press briefing.California is the largest state to announce a change in eligibility: On Apr 1 all residents 50 and older will be eligible, and all residents 16 and older will be able to get a vaccine on Apr 15.