(CNN) President-elect Joe Biden will aim to release nearly every available dose of the coronavirus vaccine when he takes office, a break with the Trump administration's strategy of holding back half of US vaccine production to ensure second doses are available. "He will share additional details next week on how his Administration will begin releasing available doses when he assumes office on January 20th." The Trump administration also does this -- in addition to holding back the second doses -- in the event of incidents such as shipment errors or vaccine spoilage. "Operation Warp Speed is continuing to ensure second doses are available to vaccine administration sites, at appropriate intervals, as directed by jurisdiction leaders," said a spokesman for HHS. The researchers modeled various scenarios, with variables including vaccine supply, protection provided by the first dose and waning efficacy of the first dose if the second dose is delayed.

Source: CNN January 08, 2021 15:33 UTC