shortness of breath; like  cellulitis; hyperventilating and could not get a deep breath in; shot area raised, hot, painful to the touch; she didn't feel too well; arm was hurting; red bump on arm; This spontaneous case was reported by a consumer and describes the occurrence of DYSPNOEA (shortness of breath), CELLULITIS (like  cellulitis) and HYPERVENTILATION (hyperventilating and could not get a deep breath in) in a 59-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 033C21A and 042B21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.   On 23-Apr-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 22-May-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 23-May-2021, the patient experienced VACCINATION SITE SWELLING (red bump on arm). On 24-May-2021, the patient experienced CELLULITIS (like  cellulitis) (seriousness criterion medically significant), HYPERVENTILATION (hyperventilating and could not get a deep breath in) (seriousness criterion medically significant), VACCINATION SITE WARMTH (shot area raised, hot, painful to the touch), MALAISE (she didn't feel too well) and VACCINATION SITE PAIN (arm was hurting). On 02-Jun-2021, the patient experienced DYSPNOEA (shortness of breath) (seriousness criteria hospitalization and medically significant). The patient was hospitalized from 03-Jun-2021 to 08-Jun-2021 due to DYSPNOEA. The patient was treated with SACUBITRIL VALSARTAN SODIUM HYDRATE (ENTRESTO) ongoing since an unknown date at a dose of 1 dosage form and POTASSIUM ongoing since an unknown date at a dose of 1 dosage form. At the time of the report, DYSPNOEA (shortness of breath), CELLULITIS (like  cellulitis), HYPERVENTILATION (hyperventilating and could not get a deep breath in), VACCINATION SITE WARMTH (shot area raised, hot, painful to the touch), MALAISE (she didn't feel too well), VACCINATION SITE PAIN (arm was hurting) and VACCINATION SITE SWELLING (red bump on arm) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 03-Jun-2021, Computerised tomogram: negative (Negative) Negative for blood clots. On 03-Jun-2021, Ejection fraction: low (Low) Ejection Fraction 20%. On 03-Jun-2021, Oxygen saturation: 3 litre per minute (Low) oxygen saturation  3 litre per minute.         Patient went to urgent care, and got two breathing treatments and a shot of steroids.  She was discharged on oral steroids and a pill for breathing.   Patient was admitted form 03Jun2021 until 08Jun2021. action taken with mRNA-1273 in response to the events was not applicable.  Company Comment: 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. No concomitant medication information was provided.; 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.