The Virginia Department of Health is expecting to receive approximately 370,000 doses of the COVID-19 vaccine by the end of December. That number is about 110,000 fewer doses than the state originally expected to receive, VDH Immunization Director Christy Gray said in a press call Wednesday.

The federal government’s “Operation Warp Speed” plan is to roll out 300 million doses, with the first batch available for frontline workers nationwide by January.

“Our understanding is that the calculation for how much vaccination would be available … it was determined off of the wrong set of vaccines,” Gray said on the call. “[Operation Warp Speed] used the number of total being manufactured, not necessarily the number that had completely gone through the data quality process and [were] ready to be shipped. They were using the wrong number to calculate that off of.”

Gray added that the original estimate was just “planning numbers,” but that VDH was “not expecting the actual allocated number to be so much lower than the planning number.”

The state has distributed 285,000 doses of the vaccine and administered more than 54,000 doses so far, according to VDH’s vaccine dashboard, which breaks down the data by locality and demographics. The department expects to receive another shipment of doses to reach the total of 370,650 by Friday.

A total of 18 Virginia hospitals received the first batch of the Pfizer-BioNTech and Moderna vaccines in mid-December. The state’s estimated 500,000 healthcare professionals and long-term care facility residents remain in the priority groups to receive the vaccine. These facilities are still in the process of giving staff and residents their initial doses.

Over the next few weeks, Gray says Virginia is slated to distribute 100,000 doses per week across 96 sites throughout the state.

At one point during the call, VDH spokesperson Maria Reppas said “a lot” of the state’s doses that are scheduled to go to long-term care facilities are currently sitting at CVS and Walgreens. Gray clarified that those doses “aren’t necessarily sitting on a shelf somewhere,” but are part of the pharmaceutical companies’ partnerships with Virginia long-term care facilities. With three visits each, CVS and Walgreens will vaccinate staff and residents at 1,442 long-term care facilities, Reppas said.

“The actual amount of the vaccine received in Virginia is a moving target and is dependent on when and how quickly vaccination doses are manufactured,” Gray said. She added that the number of doses the dashboard displays will continually lag behind the actual number administered.

Virgina isn’t the only jurisdiction falling behind on its initial distribution plan. The U.S. is administering an average of 200,000 doses daily, meaning health departments nationwide won’t hit Operation Warp Speed’s goal of 20 million doses administered by the end of the year.

Dr. Leana Wen, a visiting professor at George Washington University’s Milken School of Public Health, recently shared some sobering statistics on CNN, saying it will take 10 years at our current pace to reach 80% of Americans completely vaccinated (both Pfizer and Moderna’s vaccines require two doses). “To get to herd immunity by June 2021, we need to be at 3.5 million vaccinations a day,” she tweeted.

Gray said of Virginia’s lag in distribution, “Dealing with new systems and operations at this scale, it is expected to be slower at the beginning—but we are expecting to increase our efficiency over time.”