Foggy mind; hypersensitive reaction; Fatigue; Weak; Dizzy; This spontaneous case was reported by a consumer and describes the occurrence of FEELING ABNORMAL (Foggy mind), VACCINATION COMPLICATION (hypersensitive reaction), ASTHENIA (Weak), DIZZINESS (Dizzy) and FATIGUE (Fatigue) in a 73-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 032B21A and 026A21A) for COVID-19 vaccination.     The patient's past medical history included Vertigo (with previous vaccine in October 2017) and Shingles. Concurrent medical conditions included Asthma, Hay fever, Hives, Dust allergy (Reaction-Nose throat, headache, vertigo (balance, dizzy) in 1980's, 2017 and 2021) since 1980, Allergy to animals (Dogs, cat, Reaction-Nose throat, headache, vertigo (balance, dizzy) in 1980's, 2017 and 2021), Allergy to plants (Tree, Reaction-Nose throat, headache, vertigo (balance, dizzy) in 1980's, 2017 and 2021), Grass allergy (Reaction-Nose throat, headache, vertigo (balance, dizzy) in 1980's, 2017 and 2021), Allergy to molds (Reaction-Nose throat, headache, vertigo (balance, dizzy) in 1980's, 2017 and 2021), Wheezing, Macular degeneration, Blood pressure high and Allergy to vaccine (Shingles vaccine). Concomitant products included FEXOFENADINE HYDROCHLORIDE (ALLEGRA) and MOMETASONE FUROATE for Allergy, HYDROCHLOROTHIAZIDE for Blood pressure, ASCORBIC ACID, BETACAROTENE, CUPRIC OXIDE, TOCOPHERYL ACETATE, ZINC OXIDE (PRESERVISION) for Dry macular degeneration, ALBUTEROL SULFATE for Wheezing, CALCIUM, VITAMIN D3, VITAMIN C [ASCORBIC ACID] and FISH OIL for an unknown indication.   On 05-Mar-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 02-Apr-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On 04-Apr-2021, the patient experienced ASTHENIA (Weak) and DIZZINESS (Dizzy). On an unknown date, the patient experienced FEELING ABNORMAL (Foggy mind) and VACCINATION COMPLICATION (hypersensitive reaction). an unknown date, the patient experienced FATIGUE (Fatigue). The patient was treated with AZELASTINE HYDROCHLORIDE at a dose of 1 dosage form twice a day; FLUTICASONE PROPIONATE at a dose of 1 dosage form and AMOXICILLIN TRIHYDRATE, CLAVULANATE POTASSIUM (AMOXICILLIN CLAVULANIC ACID) (oral) at a dose of 125 mg. At the time of the report, FEELING ABNORMAL (Foggy mind) had resolved, VACCINATION COMPLICATION (hypersensitive reaction) outcome was unknown, ASTHENIA (Weak) and DIZZINESS (Dizzy) was resolving and FATIGUE (Fatigue) had not resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 27-Mar-2021, SARS-CoV-2 antibody test: negative (Negative) Negative. On 28-Mar-2021, Magnetic resonance imaging head: abnormal (abnormal) abnormal.     For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   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.   Most recent FOLLOW-UP information incorporated above includes: On 26-May-2021: Follow up received on 26-may-2021 added pcp details, patient demographics, past medical history,concomitant and treatment medications, event outcome. On 29-Jul-2021: Non - significant Follow up; 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.