In a pointy break with the Trump administration, President-elect Joseph R. Biden Jr. intends to launch practically all out there doses of the coronavirus vaccine quickly after he’s inaugurated, somewhat than maintain again tens of millions of vials to ensure second doses shall be out there.

The choice is a part of an aggressive effort to “to make sure the People who want it most get it as quickly as potential,” the Biden transition crew stated on Friday. The vaccination plan, to be formally unveiled subsequent week, additionally will embrace federally run vaccination websites in locations like highschool gyms and sports activities stadiums, and cellular models to succeed in high-risk populations.

The president-elect has vowed to get “at the least 100 million Covid vaccine pictures into the arms of the American individuals” throughout his first 100 days in workplace.

The choice to launch the overwhelming majority of vaccine doses set off a pointy debate amongst public well being consultants. The 2 vaccines which have acquired emergency approval every require two doses, and the Trump administration has to this point been holding again about half of its provide to make sure that booster doses shall be out there for these already inoculated.

Officers at Operation Warp Velocity, the Trump administration’s vaccine program, had famous that doses would cease being sequestered after the primary few weeks of rollout. However the announcement by the Biden administration units the clearest benchmark but for front-loading pictures, then distributing them as they turn out to be out there. And Warp Velocity officers on Friday had been vital of the president-elect’s choice.

The Meals and Drug Administration — whose recommendation Mr. Biden has pledged to comply with — has spoken out strongly against altering the dosing schedule, as another nations have opted to do, calling such a transfer “untimely and never rooted solidly within the out there proof.” Some public well being consultants concern that second doses could be delayed by the choice.

However others known as it a wise measure and stated it was crucial to get as many individuals vaccinated as shortly as potential — as long as the second doses should not delayed. The Biden crew stated it was assured that the availability could be sufficient, and that Mr. Biden would invoke the Protection Manufacturing Act if essential to bolster the availability of second doses.

“The president-elect believes we should speed up distribution of the vaccine whereas persevering with to make sure the People who want it most get it as quickly as potential,” stated T.J. Ducklo, a spokesman for the Biden transition crew.

The announcement that Mr. Biden intends to liberate additional doses coincided with a letter from eight Democratic governors — together with Andrew M. Cuomo of New York and Gretchen Whitmer of Michigan, each of whom have clashed with President Trump — imploring the present administration to launch all out there doses to the states as quickly as potential.

“The failure to distribute these doses to states who request them is unconscionable and unacceptable,” the governors wrote in the letter, which was obtained by The New York Instances and despatched Friday to the secretary of well being, Alex M. Azar II, and Gen. Gustave F. Perna, who’s accountable for vaccine distribution.

“We demand that the federal authorities start distributing these reserved doses to states instantly,” the letter stated.

Mr. Biden’s promise of 100 million pictures in arms is an formidable one, and the Trump administration’s rocky rollout — which Mr. Biden known as “a travesty” on Friday — has not made his activity any simpler. As of Thursday, the Trump administration had shipped greater than 21 million vaccine doses, and tens of millions extra had been already within the federal authorities’s palms.

Yet only 5.9 million people had received a dose. State and native public well being officers, already overwhelmed with rising infections, have been struggling to manage the vaccine to hospital staff and at-risk older People whereas most individuals stay at midnight about once they could be protected.

The largest drawback to this point has not been a lack of vaccine, however the difficulties that state and native governments face in distributing the doses they’ve. Capability and logistics, not shortages, are retaining vaccines from being administered.

Dr. Leana S. Wen, an emergency doctor and public well being knowledgeable on the George Washington College College of Public Well being, stated she was stunned and anxious about Mr. Biden’s new technique.

“This isn’t the issue we’re making an attempt to unravel proper now,” Dr. Wen stated.

Officers at Operation Warp Velocity had been additionally vital.

Talking at a news briefing on Friday, Dr. Stephen M. Hahn, the F.D.A. commissioner, urged states which have used solely a small a part of their provide to start vaccinating lower-priority teams, whereas nonetheless observing authorities pointers. Most states are nonetheless prioritizing frontline well being care staff and older People in group residential settings.

Increasing the focused teams “will go a great distance towards utilizing these vaccines appropriately and getting them into the arms of people,” Dr. Hahn stated.