Issues with her heart pushing fluid; Cellulitis collecting fluid; Missed 2nd Dose due to hospitalization; Did not feeling well; Extreme pain because she is in need of reverse shoulder replacement bad knee and back; Extreme pain because she is in need of reverse shoulder replacement bad knee and back; Nausea; This spontaneous pregnancy case was reported by a consumer and describes the occurrence of CELLULITIS (Cellulitis collecting fluid) and CARDIAC FAILURE (Issues with her heart pushing fluid) in a 76-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included Cardiac catheterization. Concurrent medical conditions included Cellulitis. Concomitant products included APIXABAN (ELIQUIS) for an unknown indication.    On 25-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. Last menstrual period and estimated date of delivery were not provided. On 23-Mar-2021, the patient experienced CELLULITIS (Cellulitis collecting fluid) (seriousness criteria hospitalization and medically significant). On an unknown date, the patient experienced CARDIAC FAILURE (Issues with her heart pushing fluid) (seriousness criteria hospitalization and medically significant), PRODUCT DOSE OMISSION ISSUE (Missed 2nd Dose due to hospitalization), MALAISE (Did not feeling well), BACK PAIN (Extreme pain because she is in need of reverse shoulder replacement bad knee and back), ARTHRALGIA (Extreme pain because she is in need of reverse shoulder replacement bad knee and back) and NAUSEA (Nausea). The patient was hospitalized on 23-Mar-2021 due to CARDIAC FAILURE and CELLULITIS. At the time of the report, CELLULITIS (Cellulitis collecting fluid), CARDIAC FAILURE (Issues with her heart pushing fluid), MALAISE (Did not feeling well), BACK PAIN (Extreme pain because she is in need of reverse shoulder replacement bad knee and back), ARTHRALGIA (Extreme pain because she is in need of reverse shoulder replacement bad knee and back) and NAUSEA (Nausea) outcome was unknown and PRODUCT DOSE OMISSION ISSUE (Missed 2nd Dose due to hospitalization) had resolved.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.       Treatment information was not provided. patient missed second dose of vaccination due to hospitalization.  Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.  Reporter stated that hospitalization  has nothing to do with the vaccine. Very limited information regarding the events has been provided at this time.  Further information has been requested.; Sender's Comments: Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.  Reporter stated that hospitalization  has nothing to do with the vaccine. Very limited information regarding the events has been provided at this time.  Further information has been requested.