Sex: F
Vaccine: COVID19
Symptoms: Atrial fibrillation, Swelling
Clinical narrative: I was getting AFIB at least once and sometimes twice per week it did increased the number of AFIB that I had and lasted longer; The caller stated that she had quite a bit of swelling in the beginning; This spontaneous case was reported by a consumer and describes the occurrence of ATRIAL FIBRILLATION (I was getting AFIB at least once and sometimes twice per week it did increased the number of AFIB that I had and lasted longer) in a female patient of an unknown age who received SPIKEVAX NOS (SPIKEVAX NOS) (batch nos. ASKU and ASKU) for COVID-19 prophylaxis. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included Bone graft. Previously administered products included for Product used for unknown indication: Flu vaccine. Past adverse reactions to the above products included No adverse event with Flu vaccine.   On an unknown date, the patient received dose of SPIKEVAX NOS (SPIKEVAX NOS) (unknown route) 1 dosage form. On an unknown date, received dose of SPIKEVAX NOS (SPIKEVAX NOS) (unknown route) dosage was changed to 1 dosage form. On an unknown date, the patient experienced ATRIAL FIBRILLATION (I was getting AFIB at least once and sometimes twice per week it did increased the number of AFIB that I had and lasted longer) (seriousness criterion medically significant) and SWELLING (The caller stated that she had quite a bit of swelling in the beginning). At the time of the report, ATRIAL FIBRILLATION (I was getting AFIB at least once and sometimes twice per week it did increased the number of AFIB that I had and lasted longer) and SWELLING (The caller stated that she had quite a bit of swelling in the beginning) outcome was unknown.        For SPIKEVAX NOS (SPIKEVAX NOS) (Unknown), the reporter did not provide any causality assessments.   Concomitant and treatment medications were not reported.  The reporter stated they've had all vaccines except for the new Spikevax.   The caller explained that they were waiting because about six weeks ago, she had 2 bottom teeth pulled for a bridge.  The caller stated that she had quite a bit of swelling in the beginning and didn't want to take anything that could potentially cause inflammation.  Patient reported that in the past with 2 "real ones", well they're all real, the original ones, patient was getting AFIB at least once and sometimes twice per week it did increase the number of AFIB that patient had and lasted longer.   Patient stated that it wasn't serious though, and when patient had the other booster shots everything was fine. Reported that in the last year, "patient had only AFIB once."  Company Comment: This is a spontaneous case concerning a female patient of unknown age, with no relevant medical history, who experienced the serious (due to medically significant) unexpected, AESI of Atrial fibrillation, which occurred related to the SPIKEVAX COVID-19 VACCINE NOS, received as part of COVID-19 vaccination schedule. Temporal association cannot be assessed due to lack of information on onset date of the event and vaccination date. The outcome was reported not reported. No further clinical information was available for medical review. The benefit-risk relationship of SPIKEVAX COVID-19 VACCINE NOS is not affected by this report.   This case was linked to US-MODERNATX, INC.-MOD-2023-754059 (E2B Linked Report).   Reporter did not allow further contact; Sender's Comments:  US-MODERNATX, INC.-MOD-2023-754059:same reporter other Patient