Received Oct 6, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| COVID19 | COVID19 (COVID19 (PFIZER-BIONTECH)) | PFIZER\BIONTECH | 1 | EK9231 | — |
Platelet count rose to 70/75 K/uL; increased platelet positive effect; Platelet count rose to 70/75 K/uL; increased platelet positive effect; This is a spontaneous report received from a consumer. An 82-year-old male patient received BNT162b2 (BNT162B2), on 11Jan2021 as dose 1, single (Lot number: EK9231) at the age of 82 years for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. The following information was reported: THERAPEUTIC RESPONSE UNEXPECTED (non-serious), PLATELET COUNT INCREASED (non-serious) all with onset 2021, outcome "unknown" and all described as "Platelet count rose to 70/75 K/uL; increased platelet positive effect". Relevant laboratory tests and procedures are available in the appropriate section. Additional Information: As a recipient of four Pfizer COVID-19 Vaccinations, the patient would like to share details with the company as a medical researcher regarding his platelet function during the vaccine period. For over 20 years, the patient's platelet count has been in the 50 to 60 K/uL range. During the Pfizer vaccines injections (2021 to 2023), his platelet count rose to 70/75 K/uL and then dropped back to 50/60 K/uL. The patient was asking the company to review the COVID-19 vaccines content to determine what products were included that might cause the platelet count to rise 50% from the 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. The patient thinks this increased platelet phenomenon could spotlight another way to increase platelet product for patients with MDS without the serious side effects associated with INCQOVI.; Sender's Comments: Linked Report(s) : US-PFIZER INC-PV202500116863 Same patient; different dose and event;
Test Name: Platelet; Result Unstructured Data: Test Result:50-60 x10 6/mm3; Test Name: Platelet; Result Unstructured Data: Test Result:50/60 x10 6/mm3; Test Date: 2021; Test Name: Platelet; Result Unstructured Data: Test Result:70/75 x10 6/mm3