Nearly 9,000 people need another vaccine after a nurse replaced doses with saline in April.
The nurse dropped a vial of the Pfizer vaccine and used a saltwater solution instead.
Police found the nurse may have swapped out the vaccine multiple times.
Nearly 9,000 people in Germany must be vaccinated again after a nurse administering the shot swapped the vaccine for a harmless saltwater solution.
After dropping a vial of Pfizer vaccine in April, a German nurse replaced COVID-19 shots with saline and administered those to patients instead, Metro UK reported.
But police found the nurse may have swapped out the vaccine multiple times.
German health officials said the patients "vaccinated" with the saline solution were not at any health risk, NDR reported. »