An estimated 112 children in Loudoun County, Virginia received partial doses of the adult coronavirus vaccine last week because a local clinic did not yet have the shots for children.

The Loudoun County Health Department said in a letter to parents of the affected children that Ted Pharmacy, located in Aldie, VA, “incorrectly administered” partial doses of adult Pfizer-BioNTech vaccines to kids on Nov. 3 and Nov. 4.

“Because they did not have the children’s formulation they used the adult formulation but only gave a third of the amount to the children,” the health department’s director, David Goodfriend, told The Washington Post. “Our understanding from Ted Pharmacy is they were trying to do a workaround, which is not authorized.”

Individuals who are at least 12-years-old should receive a .3-milliliter dose of the vaccine while children ages 5 to 11 are only supposed to receive a .2-milliliter dose, according to the Center for Disease Control and Prevention.

The pharmacy will no longer be permitted to offer the vaccine and its remaining doses have been transferred to the local health department, the letter to parents noted. The pharmacy was also ordered to contact the parents of the kids who received the shots.