Doses of the Pfizer-BioNTech COVID-19 vaccine are ready to be administered at Brigham and Women's Hospital in Boston, Mass., on Dec. 16, 2020. Brian Snyder/Reuters
A hospital in Illinois halted COVID-19 vaccinations after four workers suffered adverse reactions.
The workers at Advocate Condell Medical Center in Libertyville suffered tingling and an elevated heartrate, Advocate Aurora Health said in a statement to news outlets.