Had cucumbers which caused allergic reaction, lemon tea and cheese Danish reaction due to Moderna vaccine allergy, in and out of the hospital due allergic reaction, took 4 days off of work due to allergic reaction, tested by allergist, allergy PEG; Diagnosis of acid reflux and never had this prior; Medication for nausea; This spontaneous case was reported by a consumer and describes the occurrence of HYPERSENSITIVITY (Had cucumbers which caused allergic reaction, lemon tea and cheese Danish reaction due to Moderna vaccine allergy, in and out of the hospital due allergic reaction, took 4 days off of work due to allergic reaction, tested by allergist, allergy PEG) in a female patient of an unknown age who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.    On 22-Oct-2021, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. In 2021, the patient experienced NAUSEA (Medication for nausea). On an unknown date, the patient experienced HYPERSENSITIVITY (Had cucumbers which caused allergic reaction, lemon tea and cheese Danish reaction due to Moderna vaccine allergy, in and out of the hospital due allergic reaction, took 4 days off of work due to allergic reaction, tested by allergist, allergy PEG) (seriousness criterion medically significant) and GASTROOESOPHAGEAL REFLUX DISEASE (Diagnosis of acid reflux and never had this prior). The patient was treated with DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) for Adverse event, at a dose of 1 dosage form; EPINEPHRINE (EPIPEN) for Adverse event, at a dose of 1 dosage form; PREDNISONE on 27-Sep-2021 for Adverse event, at a dose of 40 milligram twice a day; CETIRIZINE HYDROCHLORIDE (ZYRTEC [CETIRIZINE HYDROCHLORIDE]) for Adverse event, at a dose of 50 milligram every six hours and CIMETIDINE for Adverse event, at a dose of 10 milligram increased to to 20 mg. At the time of the report, HYPERSENSITIVITY (Had cucumbers which caused allergic reaction, lemon tea and cheese Danish reaction due to Moderna vaccine allergy, in and out of the hospital due allergic reaction, took 4 days off of work due to allergic reaction, tested by allergist, allergy PEG) and GASTROOESOPHAGEAL REFLUX DISEASE (Diagnosis of acid reflux and never had this prior) had not resolved and NAUSEA (Medication for nausea) outcome was unknown.            Hospital was diagnosed the patient with allergy to the Moderna vaccine.  Last week took 4 days off of work due to an allergic reaction resulting in EpiPen administration and 50mg of Benadryl at work last Monday.   On numerous occasions patient has used EpiPen at work and at home which always results in a hospital visit to monitor her after EpiPen administration.   Patient was in the hospital about 3 times a week and last weeks patient was in hospital 5 times  On 01-Nov-2021 at 9 am patient states she had lemon tea and a cheese Danish and this was the most recent reaction resulting in ER visit and EpiPen administration.   Patient states that reactions have been ongoing for 3 months and never had any allergy prior to receiving the 1st Moderna dose.   After second dose vaccination patient was sent to a walk in clinic where she was administered Benadryl as an injection and was given an EpiPen injection and went sent straight to ER from the walk in clinic.   Patient is on medication for nausea an unknown medication name and dosage.  Patient takes 25 to 30 pills a day due to Moderna vaccine allergy about 200mg total of allergy medication.  Company Comment: This case concerns a female patient of unknown age, with no reported medical history, who experienced the serious unexpected event of HYPERSENSITIVITY. The event occurred on an unknown date after the second dose of the Moderna COVID 19 vaccine. The rechallenge is not applicable since the event has not resolved. The benefit-risk relationship of the Moderna COVID 19 vaccine is not affected by this report. Event was assessed as medically significant as the patient reports multiple visits to the hospital (with no reported admissions) and is receiving multiple treatment drugs.   This case was linked to MOD-2021-335165 (Patient Link).; Sender's Comments: This case concerns a female patient of unknown age, with no reported medical history, who experienced the serious unexpected event of HYPERSENSITIVITY. The event occurred on an unknown date after the second dose of the Moderna COVID 19 vaccine. The rechallenge is not applicable since the event has not resolved. The benefit-risk relationship of the Moderna COVID 19 vaccine is not affected by this report. Event was assessed as medically significant as the patient reports multiple visits to the hospital (with no reported admissions) and is receiving multiple treatment drugs.