COVID arm/Covid arm in opposite arm; This spontaneous case was reported by a consumer and describes the occurrence of VACCINATION SITE REACTION (COVID arm/Covid arm in opposite arm) in a 53-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 002A21A) for COVID-19 vaccination.     NO Medical History Information was reported.  Concomitant products included AZELASTINE, FLUTICASONE PROPIONATE, SALMETEROL XINAFOATE (ADVAIR), BIOTIN, CALCIUM, VITAMIN D NOS, MAGNESIUM, ESTRADIOL, FISH OIL, FLUTICASONE PROPIONATE (FLONASE ALLERGY RELIEF), APETAMIN [CYPROHEPTADINE HYDROCHLORIDE;DEXPANTHENOL;LYSINE HYDROCHLORIDE;NICOTINAMIDE;PYRIDOXINE HYDROCHLORIDE;THIAMINE HYDROCHLORIDE], LEVOCETIRIZINE DIHYDROCHLORIDE (LEVOCETRIZINE HYDROCHLORIDE), LEVOTHYROXINE SODIUM (SYNTHROID), OMEPRAZOLE, CICLOSPORIN (RESTASIS), TOPIRAMATE, PSYLLIUM HUSK [PLANTAGO OVATA HUSK], SALBUTAMOL (VENTOLIN [SALBUTAMOL]) and VITAMIN C [ASCORBIC ACID] for an unknown indication.    On 26-Feb-2021, the patient received dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 03-Mar-2021, the patient experienced VACCINATION SITE REACTION (COVID arm/Covid arm in opposite arm). The patient was treated with DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) for Adverse event, at an unspecified dose and frequency. At the time of the report, VACCINATION SITE REACTION (COVID arm/Covid arm in opposite arm) outcome was unknown.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.       After two months, Patient reported that the first vaccine she received was a non Moderna inactivated vaccine.   This case was linked to US-MODERNATX, INC.-MOD-2021-101809 (E2B Linked Report).   Most recent FOLLOW-UP information incorporated above includes: On 03-May-2021: Additional information received This case was received via an unknown source (no reference has been entered for a health authority or license partner) on 07-Mar-2021 and was forwarded to Moderna on 08-Mar-2021.    This spontaneous case was reported by a consumer and describes the occurrence of VACCINATION SITE REACTION (COVID arm/Covid arm in opposite arm) in a 53-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 002A21A) for COVID-19 vaccination.     NO Medical History Information was reported.  Concomitant products included AZELASTINE, FLUTICASONE PROPIONATE, SALMETEROL XINAFOATE (ADVAIR), BIOTIN, CALCIUM, VITAMIN D NOS, MAGNESIUM, ESTRADIOL, FISH OIL, FLUTICASONE PROPIONATE (FLONASE ALLERGY RELIEF), APETAMIN [CYPROHEPTADINE HYDROCHLORIDE;DEXPANTHENOL;LYSINE HYDROCHLORIDE;NICOTINAMIDE;PYRIDOXINE HYDROCHLORIDE;THIAMINE HYDROCHLORIDE], LEVOCETIRIZINE DIHYDROCHLORIDE (LEVOCETRIZINE HYDROCHLORIDE), LEVOTHYROXINE SODIUM (SYNTHROID), OMEPRAZOLE, CICLOSPORIN (RESTASIS), TOPIRAMATE, PSYLLIUM HUSK [PLANTAGO OVATA HUSK], SALBUTAMOL (VENTOLIN [SALBUTAMOL]) and VITAMIN C [ASCORBIC ACID] for an unknown indication.    On 26-Feb-2021, the patient received dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 03-Mar-2021, the patient experienced VACCINATION SITE REACTION (COVID arm/Covid arm in opposite arm). The patient was treated with DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) for Adverse event, at an unspecified dose and frequency. At the time of the report, VACCINATION SITE REACTION (COVID arm/Covid arm in opposite arm) outcome was unknown.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.       After two months, Patient reported that the first vaccine she received was a non Moderna inactivated vaccine.   This case was linked to US-MODERNATX, INC.-MOD-2021-101809 (E2B Linked Report).   Most recent FOLLOW-UP information incorporated above includes: On 03-May-2021: Additional information received; Sender's Comments:  US-MODERNATX, INC.-MOD-2021-101809: