Hospice put in the death certificated that she dies from complication with the Moderna shot; got Alzheimer dementia; complained about her arm; started having trouble walking/ a couple of weeks after that she was not able to walk; was concern because the shot was not administer right; This spontaneous case was reported by a patient family member or friend and describes the occurrence of VACCINATION COMPLICATION (Hospice put in the death certificated that she dies from complication with the Moderna shot), DEMENTIA ALZHEIMER'S TYPE (got Alzheimer dementia), LIMB DISCOMFORT (complained about her arm) and GAIT DISTURBANCE (started having trouble walking/ a couple of weeks after that she was not able to walk) in a 94-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 prophylaxis. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included COVID-19 in March 2022. Previously administered products included for Product used for unknown indication: Flu shot (given within 1 month prior to Moderna COVID-19 vaccine). Past adverse reactions to the above products included No adverse event with Flu shot.    In 2022, the patient received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. In 2022, the patient experienced VACCINATION COMPLICATION (Hospice put in the death certificated that she dies from complication with the Moderna shot) (seriousness criterion death), DEMENTIA ALZHEIMER'S TYPE (got Alzheimer dementia) (seriousness criteria death and medically significant), LIMB DISCOMFORT (complained about her arm) (seriousness criterion death), GAIT DISTURBANCE (started having trouble walking/ a couple of weeks after that she was not able to walk) (seriousness criterion death) and PRODUCT ADMINISTRATION ERROR (was concern because the shot was not administer right). The patient died on 15-Jun-2022. The reported cause of death was hospice put in the death certificated that she dies from complication with the moderna shot, got alzheimer dementia, complained about her arm and started having trouble walking/ a couple of weeks after that she was not able to walk. An autopsy was not performed. At the time of death, PRODUCT ADMINISTRATION ERROR (was concern because the shot was not administer right) outcome was unknown.            Relevant concomitant medications were not reported. It was reported that 3 months ago the patient got the booster and the end of Feb-2022 begging of Mar-2022, and that got a little sick with first and second shot, but after the booster got a rapid declined. She complained about her arm and then she started having trouble walking. A couple of weeks after that she was not able to walk, and after that got Alzheimer dementia, and she did not know her family. On 15-Jun-2022 she died, something happened with that shot at that pharmacy, was a rapid declined, she was gardening and driving the day of the booster. The doctor was surprised because she got a psychical. Patient's son was concern because the shot was not administered right, or she was to old and fragile to get the shot. The amalgamation of what happened was incredible three months. All this people were okay at the time of report, except for his mother. The Hospice put in the death certificated that she dies from complication with the Moderna shot. The adverse event cause patient to seek medical care (office visit, Urgent care, ER, hospitalized) to ER.  They could not get the Autopsy done because of her age. Treatment information was not provided. The patient experienced no a similar event in the past.   This case was linked to US-MODERNATX, INC.-MOD-2022-599998 (E2B Linked Report). Company Comment: This spontaneous case concerns a 94-years-old, female patient with no relevant medical history, who experienced the unexpected fatal serious events of vaccination complication, dementia Alzheimer's type (medically significant), limb discomfort, gait disturbance, product admiration error, which occurred unspecified days after third dose of mRNA-1273 vaccine. It is reported that after booster vaccination patient complained about her arm and started having trouble walking and after couple of weeks patient wasn't able to walk and then patient diagnosed with Alzheimer dementia and family didn't about this and patient died on 15 AUG 2022, autopsy results were unknown. Cause of death is mentioned as vaccination complication, dementia Alzheimer's type (medically significant), limb discomfort, gait disturbance, product admiration error. The benefit-risk relationship of mRNA-1273 is not affected by this report.; Sender's Comments: This spontaneous case concerns a 94-years-old, female patient with no relevant medical history, who experienced the unexpected fatal serious events of vaccination complication, dementia Alzheimer's type (medically significant), limb discomfort, gait disturbance, product admiration error, which occurred unspecified days after third dose of mRNA-1273 vaccine. It is reported that after booster vaccination patient complained about her arm and started having trouble walking and after couple of weeks patient wasn't able to walk and then patient diagnosed with Alzheimer dementia and family didn't about this and patient died on 15 AUG 2022, autopsy results were unknown. Cause of death is mentioned as vaccination complication, dementia Alzheimer's type (medically significant), limb discomfort, gait disturbance, product admiration error. The benefit-risk relationship of mRNA-1273 is not affected by this report. US-MODERNATX, INC.-MOD-2022-599998:Master case; Reported Cause(s) of Death: Hospice put in the death certificated that she dies from complication with the Moderna shot; got Alzheimer dementia; complained about her arm; started having trouble walking/ a couple of weeks after that she was not able to walk