cardiac arrest; She died of a pulmonary/saddle type pulmonary embolism/atal type pulmonary embolism; dizzy; headache; nauseous; shortness of breath; Vertigo; not feel well/ill; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team.  A 71-year-old female patient received BNT162b2 (BNT162B2), as dose number unknown (booster), single (Batch/Lot number: unknown) for covid-19 immunisation. The patient's relevant medical history included: "Pre-diabetic" (unspecified if ongoing). The patient's concomitant medications were not reported. Vaccination history included: Covid-19 vaccine (Primary Immunization series complete; Unknown Manufacturer), for COVID-19 immunization. The following information was reported: CARDIAC ARREST (death, medically significant), outcome "fatal"; PULMONARY EMBOLISM (death, medically significant), outcome "fatal", described as "She died of a pulmonary/saddle type pulmonary embolism/atal type pulmonary embolism"; DIZZINESS (non-serious), outcome "unknown", described as "dizzy"; HEADACHE (non-serious), outcome "unknown"; NAUSEA (non-serious), outcome "unknown", described as "nauseous"; DYSPNOEA (non-serious), outcome "unknown", described as "shortness of breath"; VERTIGO (non-serious), outcome "unknown"; MALAISE (non-serious), outcome "unknown", described as "not feel well/ill". The events "dizzy", "headache", "nauseous", "shortness of breath", "vertigo" and "not feel well/ill" required emergency room visit. The patient underwent the following laboratory tests and procedures: Blood test: Unknown result; Weight: 150, notes: Weight: Reporter stated, "Weight, I don't know off hand what her weight was, may be about a 150(further clarification unknown) I don't know. Therapeutic measures were taken as a result of malaise. The patient date of death was 17Nov2021. Reported cause of death: "She died of a pulmonary/saddle type pulmonary embolism/atal type pulmonary embolism", "cardiac arrest". Clinical course: Calling on behalf of her father. He was told to call this phone number to report his wife/her mother passing away after getting the Pfizer Covid 19 booster dose. Lab test: Reporter stated, "I believe they did a try to do, they did take blood work when she was at the hospital the day that she passed away. I am saying that at the hospital I know they took her labs, the day that she passed away they took blood yes, for sure. Prior to that I have to get her information there was an autopsy that was performed so I have her cause of death." Treatment: Reporter stated, "After the vaccine she started to not feel well, she was feeling dizzy, she had a headache and she was feeling nauseous. She went to an urgent care, the urgent care told get she had vertigo, it was not vertigo she had never experienced vertigo in her entire life, she was clearly having shortness of breath. They did not see any of that. they didn't test her any of that. They sent her home with the prescription and told her that it was vertigo and it was just nausea. The day after when she woke up that morning she felt extremely ill, was not able to breath or catch her breath. My father took her to the hospital, this time the emergency room and again they sent her home and told her it was vertigo. They did not allow me to go in with her because of all of the Covid instruction during that time because I was at least able to help with the translation because she is stronger in her language and she died the next morning." Cause of death: Reporter stated, "She died of a pulmonary, it is called a saddle type pulmonary embolism according to the autopsy report." When paraphrased the concern: Reporter stated, "Yes, so her and my father on the same day received the booster and she fell ill immediately after that, the day after, the 2nd day after the timeline. I don't know how many specific you need, but she felt ill, she was having problems after. She was feeling very dizzy, very nauseated, shortness of breath and we actually took her to urgent care because she didn't know what was happening to her. The urgent care diagnosed her as having vertigo and she was sent home.  She continued to feel ill and my father 'went' to emergency room to hospital, the next morning. And basically same diagnosis. She never got a x-ray, other 'investigations in' the ER and running additional test and nothing like that was done. She was basically sent home. And they gave her medication for vertigo again. She had never experienced vertigo in her life and this was not something that was common for her. And she passed away the day after. So, she passed away, 9 days exactly after the booster. We were heading to get autopsy because we needed to find out exactly what happened. Because all we knew is that she went into a cardiac arrest. But that just not make sense because she never had heart problems, I mean the heart just suddenly stopped. And we did the autopsy and the autopsy revealed that she had passed from fatal type pulmonary embolism. And after doing kind of research, this is one of the thing that is happening with the booster. And I am not anti with all the vaccines, none of that so this is getting very difficult for us. Her doctor just you know, we had been, her doctor is addition to all of that, was aware, and when he submitted my mother's death certificate to the county stating it was due to the booster that he understated in the death certificate, the death certificate was given back to him and he was disappointed because that was not okay to put on the death certificate, according to the physician said to me. And he was asked to change the cause of death. We have the autopsy report." Treatment: Reporter stated, "She was prescribed the medication (not clarified) but she didn't take it because she didn't think she had vertigo."  The information on the batch/lot number for BNT162b2 has been requested and will be submitted if and when received.; Reported Cause(s) of Death: She died of a pulmonary/saddle type pulmonary embolism/atal type pulmonary embolism; cardiac arrest