Received Oct 7, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| COVID19 | COVID19 (COVID19 (PFIZER-BIONTECH)) | PFIZER\BIONTECH | 3 | FC3181 | — |
this increased platelet positive affect; platelet count to rise 50% from the 50 K/ul to 75 K/ul each time I was; This is a spontaneous report received from a Consumer or other non HCP. An 83-year-old male patient received BNT162b2 (BNT162B2), on 21Aug2021 as dose 3 (booster), single (Lot number: FC3181) at the age of 83 years for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: BNT162b2 (Dose 1, single; Lot number: EK9231), administration date: 11Jan2021, when the patient was 82-year-old, for COVID-19 immunization, reaction(s): "this increased platelet positive affect/platelet count to rise 50% from the 50 K/ul to 75 K/ul each time", "this increased platelet positive affect/platelet count to rise 50% from the 50 K/ul to 75 K/ul each time"; BNT162b2 (Dose 2, single; Lot number: EL8982), administration date: 01Feb2021, when the patient was 82-year-old, for COVID-19 immunization, reaction(s): "this increased platelet positive affect/platelet count to rise 50% from the 50 K/ul to 75 K/ul each time", "this increased platelet positive affect/platelet count to rise 50% from the 50 K/ul to 75 K/ul each time". The following information was reported: THERAPEUTIC RESPONSE UNEXPECTED (non-serious), outcome "unknown", described as "this increased platelet positive affect"; PLATELET COUNT INCREASED (non-serious), outcome "unknown", described as "platelet count to rise 50% from the 50 K/ul to 75 K/ul each time I was". Relevant laboratory tests and procedures are available in the appropriate section. Additional information: for over 20 years, patient's platelet count has been in the 50 to 60 K/uL range. During the Pfizer vaccines injections (2021 to 2023), platelet count rose to 70/75 K/uL and then dropped back to 50/60 K/uL. Interestingly, during his January 2025 5-day-hospital for COVID, his platelet blood count also rose to 75 K/uL an all-time high. Patient was asking to review the COVID vaccines content to determine what products were included that might cause the platelet count to rise 50% from 50 K/uL to 75 K/uL each time he was vaccinated. This increased platelet positive effect might be a secondary or tertiary effect but would be beneficial for platelet treatment rather the normal drugs.; Sender's Comments: Linked Report(s) : US-PFIZER INC-PV202500116863 Same patient, different vaccine dose and event;
Test Name: Platelet count; Result Unstructured Data: Test Result:50 to 60; Comments: Unit: K/uL; for over 20 years, platelet count has been in the 50 to 60 K/uL range; Test Name: Platelet count; Result Unstructured Data: Test Result:70/75; Comments: Unit: K/uL; during the Pfizer vaccines injections (2021 to 2023), platelet count rose to 70/75 K/uL; Test Name: Platelet count; Result Unstructured Data: Test Result:50/60; Comments: Unit: K/uL; dropped back to 50/60 K/uL; Test Date: 202501; Test Name: Platelet count; Result Unstructured Data: Test Result:75; Comments: Unit: K/uL; all-time high