Still not feeling well, still not back to being herself/ I have been sick since Easter Sunday; Chest was tight; Trouble breathing; felt lack of oxygen; Body ache; Extremely thirsty; felt chills, teeth were chattering; body inceresed temperature; extreme fatigue and exhaustion; Rash on arm; Severe pain on arm; Swollen arm; COVID arm; This spontaneous case was reported by a consumer and describes the occurrence of DYSPNOEA (Trouble breathing), PAIN IN EXTREMITY (Severe pain on arm), PERIPHERAL SWELLING (Swollen arm), MALAISE (Still not feeling well, still not back to being herself/ I have been sick since Easter Sunday) and CHEST DISCOMFORT (Chest was tight) in a 58-year-old patient of an unknown gender who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 031B21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included Asthma. Previously administered products included for an unreported indication: COVID-19 VACCINE (Moderna COVID Vaccine-First dose on 07MAR2021 on left arm.) on 07-Mar-2021.   On 04-Apr-2021, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On an unknown date, the patient received dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 04-Apr-2021, the patient experienced PAIN IN EXTREMITY (Severe pain on arm), PERIPHERAL SWELLING (Swollen arm), VACCINATION SITE REACTION (COVID arm), PYREXIA (body inceresed temperature), FATIGUE (extreme fatigue and exhaustion), RASH (Rash on arm) and CHILLS (felt chills, teeth were chattering). On 07-Apr-2021, the patient experienced THIRST (Extremely thirsty) and MYALGIA (Body ache). On 24-Apr-2021, the patient experienced DYSPNOEA (Trouble breathing) and HYPOXIA (felt lack of oxygen). On an unknown date, the patient experienced MALAISE (Still not feeling well, still not back to being herself/ I have been sick since Easter Sunday) and CHEST DISCOMFORT (Chest was tight). The patient was treated with DEXAMETHASONE ACETATE (DECADRON A) at a dose of UNK,; SALBUTAMOL (ALBUTEROL HFA) at a dose of UNK, q6h; PARACETAMOL (TYLENOL) ongoing since an unknown date at an unspecified dose and frequency and DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) at an unspecified dose and frequency. On 09-Apr-2021, THIRST (Extremely thirsty) had resolved, MYALGIA (Body ache) outcome was unknown. On 10-Apr-2021, PYREXIA (body inceresed temperature) and CHILLS (felt chills, teeth were chattering) had resolved. At the time of the report, DYSPNOEA (Trouble breathing), PAIN IN EXTREMITY (Severe pain on arm), PERIPHERAL SWELLING (Swollen arm), MALAISE (Still not feeling well, still not back to being herself/ I have been sick since Easter Sunday), CHEST DISCOMFORT (Chest was tight), VACCINATION SITE REACTION (COVID arm), HYPOXIA (felt lack of oxygen), FATIGUE (extreme fatigue and exhaustion) and RASH (Rash on arm) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Body temperature: increased 102 *F.    Patient also had nebulization during the next week. Patient preferred not to shared concomitant medication. Patient stated still not back to being herself,chest still feels tight, still not feeling well.   This case was linked to US-MODERNATX, INC.-MOD-2021-100610 (E2B Linked Report).   Most recent FOLLOW-UP information incorporated above includes: On 14-Jun-2021: Non-Significant Follow-up On 15-Jun-2021: Follow up received and has no new information; Sender's Comments:  US-MODERNATX, INC.-MOD-2021-100610: