MercyOne admitted more than 100 children under age 12 received the wrong dose of the Pfizer COVID vaccine at a mass vaccination clinic held on Nov. 20 in Urbandale.
“The prescribed dose is 10 micrograms for children under 12 years old, and children received 20 micrograms,” the statement said. “An adult vaccine dose is 30 micrograms.”
MercyOne representatives are contacting all parents and has pediatricians available to answer questions.
“Anticipated side effects from the misdosage may include more pronounced post-vaccine responses such as a sore arm, mild fever, headache and fatigue,” the statement said.
MercyOne is putting procedures in place to “ensure a similar incident does not happen again.”