Age: 67.0
Sex: F
Vaccine: COVID19
Symptoms: Immunisation, Overdose, Product preparation error
Clinical narrative: booster dose administered today; patients were given a dose of the Pfizer COVID Vaccine that was not diluted first; patients were given a dose of the Pfizer COVID Vaccine that was not diluted first; This is a spontaneous report received from contactable reporter (Other HCP) from medical information team for a Pfizer sponsored program. A contactable other HCP reported similar events for 4 patients. This is a 2nd of 4 reports.  A 67 year-old female patient received bnt162b2 (COMIRNATY), intramuscular, administration date 19Nov2021 (Lot number: FH8028) at the age of 67 years as dose 3 (booster), single for covid-19 immunisation. The patient's relevant medical history was not reported. There were no concomitant medications. Vaccination history included: Bnt162b2 (1st dose of the Pfizer COVID Vaccine, lot number EN6202, route was intramuscularly to the patient's unknown side.), administration date: 24Feb2021, when the patient was 66 years old, for COVID-19 immunization; Bnt162b2 (2nd dose of the Pfizer vaccine , lot ER2613 , route was intramuscularly to the patient's unknown side.), administration date: 17Mar2021, when the patient was 66 years old, for COVID-19 immunisation. The following information was reported: IMMUNISATION (non-serious) with onset 19Nov2021, outcome "unknown", described as "booster dose administered today"; PRODUCT PREPARATION ERROR (non-serious), OVERDOSE (non-serious) all with onset 19Nov2021, outcome "unknown" and all described as "patients were given a dose of the Pfizer COVID Vaccine that was not diluted first".  Additional information: Patients were given a dose of the Pfizer COVID Vaccine that was not diluted first. Reporter states she had a caller on the line who mistakenly gave three patients a dose of the Pfizer COVID Vaccine that was not diluted first and she was asking for guidance on what to do; states she gave the caller the contact information for Pfizer. Reporter verified the information provided by the transferring agent and clarified to state that four patients were administered the Pfizer COVID Vaccine that was not diluted first. States this patient had the 3rd dose or booster dose administered today and it was the dose that was not diluted and states the patient had the 1st dose of the Pfizer COVID Vaccine on 24Feb2021 with lot number EN6202, the 2nd dose of the Pfizer vaccine on 17Mar2021 with lot ER2613 and the booster dose administered today 19Nov2021 with lot FH8028; states she does not knew the location of administration but the route was intramuscularly to the patient's unknown side. Reporter had 4 patients who were mistakenly giving a dose of Comirnaty that was not diluted. Patients are a 62-year old male, a 67-year old female, a 28-year old male, and a 66-year old male. Reporter wanted guidance regarding this error. As per Reporter, the 28-year old male was not given an incorrect dose. Reporter mentioned all doses were the 3rd dose of the patients.  Follow-up attempts are completed. No further information is expected.; Sender's Comments: Linked Report(s) : US-PFIZER INC-202101624862 similar report from same reporter