This is a spontaneous report from a Pfizer-sponsored program COVAX US Support received from a contactable consumer (patient). An 89-year-old female patient received the second dose of BNT162b2 (PFIZER-BIONTECH COVID-19 VACCINE; lot number: EL9267), administered in left arm, on 02Mar2021 (at the age of 89-years-old) at 2nd dose, single for COVID-19 immunisation. Medical history included blood pressure, black and blue at the area of the blood work, whole arm was black and blue. Concomitant medications included metoprolol taken from 2021 (about a month prior the report, as reported) at 25 mg for blood pressure; amlodipine taken from an unspecified date (started taking it many years prior the report, she said at least 8 years, as reported) at 5 mg for blood pressure. The vaccination provider had difficulty with the needle and her skin had black and blue since that day, she had not experienced any other side effect. The patient read somewhere that in older people the vaccine was not as effective, her doctor told her that the black and blue was a result of being mistreated, and she had also heard that this should not happen. The black and blue was getting lighter, she saw some yellow as in bruises, when she took a blood test her whole arm was black and blue. She would like to know if this was normal or if she was "the first one in the history to report this" and if her injection was effective and if it had full effect. She continued to state the operator that gave her the vaccine had difficultly administering it to her as a result the operator started prodding her and the injection area was then black and blue. It did not hurt her, well it did hurt when he did it, and she told him that. She used ice on the area but everyone she had shown said 'oh my God that was not normal she should go see a doctor'. She did not have any after effects, she was fine, all symptoms listed she did not have any of them other than the black and blue arm. She was starting to get concerned because it had been so many days. She mentioned it was getting yellow at the time of the report. She was concerned that the vaccine was ineffective or it was effective and something was wrong. Patient stated the black and blue area resembled something like when she got a blood test and the operator had difficulty, she continued to report that sometimes she would be black and blue at the area of the blood work and that sometimes her whole arm would be black and blue. She continued to speak about her concern with the black and blue area, she stated she worried, was the vaccine going to work ok because of this. She thought it was import and that it was such a peculiar thing. She had spoken to her doctor and pharmacist, they felt it was just a black and blue area that would go away but she was concerned because it had been so many days and she felt it should have resolved by this time. She did not take any ASPIRIN or acetaminophen, because they said not to. She was concerned that the vaccine was ineffective or it was effective and something was wrong, due to the event that she was experiencing. Injection site was black and blue. The patient was recovering from the events.   No follow-up attempts are possible. No further information is expected.