her mother's body was full blown with leukemia/she wasn't responding/leukemia was back; Second dose: breathing heavy; Second dose: screaming in agony and pain because her sides were blowing up in pain; Second dose: She had no red blood cells that could provide oxygen to her organs; Second dose: weak; Second dose: overproducing of her white blood cells; Second dose: wasn't acting like herself; Second dose: more tired; Second dose: she could hardly talk; Second dose: she couldn't stand up; Second dose: she lost control of her bowels; Second dose: hollow cough; This is a spontaneous report from a contactable consumer. A 96-years-old female patient received bnt162b2 (BNT162B2), dose 2 via an unspecified route of administration, administered in Arm Left on 28Mar2021 (Batch/Lot Number: EP6955) as 2ND DOSE, SINGLE for covid-19 immunisation. Medical history included Leukaemia in 2018, High blood pressure with 40 years, Diabetes in 2016, Atrial fibrillation in 2018.The patient's concomitant medications were not reported. Patient previously received the first dose of BNT162B2 (Batch/lot number: EN6199) in left arm on 07Mar2021 for COVID-19 immunization. She had just had her blood drawn in Feb2021 and her blood was ok. So on 07Mar2021 she received her first Covid 19 vaccine. At 96 years old, after the Covid 19 vaccine, her mother's body was full blown with leukemia. Radiation wasn't an option to stop the overproducing of her white blood cells. The Covid 19 vaccine just accelerated it. Maybe there are others out there in this condition and should be double checking to see if they should get the Covid 19 vaccine.  On the 12Apr2021 or 13Apr2021 her mother started having a hollow cough. She wasn't congested but she continued to cough. She noticed her mother was breathing heavy and fighting to breathe on Friday, on16Apr2021. It wasn't getting any better and she thought her mother would have more trouble so she took her to the emergency room. She reported she took her mother to the hospital on 16Apr2021.She was admitted on 16Apr2021 and discharged on 18Apr2021. They gave her some oxygen and did some tests. They asked her mother if she had chronic obstructive pulmonary disease and she did not, they suggested that it was her atrial fibrillation. She has had atrial fibrillation in the past, her doctor did leave her on her atrial fibrillation medication. She can't recall the name of the atrial fibrillation medication. She was discharged home on 18Apr2021 and she was breathing ok on her own. But by that next Tuesday, 20Apr2021, she noticed her mother was declining. She wasn't acting like herself. On Wednesday, 21Apr2021, she was more tired and her difficulty breathing started back up. On Thursday, 22Apr2021, she called the ambulance to take her mother to the hospital. She could tell that her mother wasn't herself, she could hardly talk on 22Apr2021 , she couldn't stand up, she lost control of her bowels. She wasn't responding to her. The caller knew something was going on. They put oxygen on her mother and they transferred her to a cancer specialist hospital. That's when the doctor realized it was a leukoblast. Clarified with caller, leukoblast. Then her mother died. She died on 28Apr2021.The caller knows the hospital was doing tests to see what was causing her mother's pain, but she doesn't have that information. She heard the screams from her mother and there was no consoling her mother. The hospital gave her mother morphine and it didn't work. She has no product information for the morphine, it was given in the hospital. She was screaming for murder, screaming for help and was given the morphine. Within a month of receiving the Covid 19 vaccine her leukemia was back and her mother was screaming in agony and pain because her sides were blowing up in pain. Whatever the Covid 19 vaccine did in her body, her body thought it was fighting off something. She had no red blood cells that could provide oxygen to her organs. She was weak. Overproducing of her white blood cells on an unspecified date. The lab data included White blood cell count abnormal and Red blood cell count decreased. Outcome of her mother's body was full blown with leukemia/she wasn't responding was fatal, of remaining events was unknown. Treatment received for all events. The seriousness of event breathing heavy and fighting to breathe were reported as hospitalization from 16Apr2021 to 18Apr2021. The seriousness criteria of she wasn't responding was reported as hospitalization from 22Apr2021 to 28Apr2021.; Reported Cause(s) of Death: Fatal Neoplasm progression