Doctors inject sisters Claudia Scott-Mighty, left, Althea Scott-Bonaparte, who are patient care directors, and Christine Scott, an ICU nurse, with their second shot of the Pfizer vaccine at NewYork-Presbyterian Lawrence Hospital in Bronxville, N.Y., on Friday. The second round of the vaccine increases its efficacy to 95%, according to Pfizer. (AP Photo/Kevin Hagen). (CN) — The decentralized rollout of the Covid-19 vaccine in the United States is moving slower than anticipated, but a massive boost in funding this week — and a new plan from President-elect Joe Biden — could alleviate some of states’ most pressing concerns about distribution. On Friday, Biden said he will reverse the Trump administration’s distribution approach for second doses of vaccine. The move followed a letter from six state governors asking for the change.