2 people given undiluted Covid-19 vaccine on Sept 15, one hospitalised now discharged: MOH

Two adults were given an undiluted vial of the Pfizer-BioNTech vaccines each on Sept 15, with one needing hospitalisation after experiencing headache and increased heart rate, the Ministry of Health (MOH) said.

In response to queries from TODAY, the ministry said that it was alerted on Sept 19 to the incident. It happened at a clinic of ProHealth Medical Group in Hougang on Sept 15.

Each vial of Pfizer-BioNtech vaccine reportedly supplements five doses. This is based on an incident last year when an employee at the Singapore National Eye Centre was wrongly administered the equivalent of five doses of the Pfizer-BioNTech Covid-19 vaccine due to a human error.

"MOH takes a serious view of this incident and is carrying out a thorough investigation," the ministry said on the latest case.

"The clinic and doctor who administered the vaccine have been suspended from the national vaccination programme until further notice."

TODAY has asked MOH when the patient was hospitalised. ProHealth Medical Group declined to comment.