Had the same symptoms, pass out; Thinks that her daughter had chest pain after the 2nd dose; Extreme body ache; Fever; Headache; This spontaneous case was reported by a consumer and describes the occurrence of LOSS OF CONSCIOUSNESS (Had the same symptoms, pass out) in a 30-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included COVID-19 (History of COVID) in October 2020. Concurrent medical conditions included Allergy NOS (A lot of allergies).   In February 2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. In March 2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. In March 2021, the patient experienced LOSS OF CONSCIOUSNESS (Had the same symptoms, pass out) (seriousness criterion medically significant), CHEST PAIN (Thinks that her daughter had chest pain after the 2nd dose), MYALGIA (Extreme body ache), PYREXIA (Fever) and HEADACHE (Headache). In March 2021, LOSS OF CONSCIOUSNESS (Had the same symptoms, pass out), CHEST PAIN (Thinks that her daughter had chest pain after the 2nd dose), MYALGIA (Extreme body ache), PYREXIA (Fever) and HEADACHE (Headache) had resolved.        mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) dosing remained unchanged.       No concomitant medications were reported. Treatment information was not provided.  The patient was a heathy athletic person and had no history of myocarditis or any heart problems. She does intense exercises and reporter stated that if there was anything wrong with her heart that would have known by that time.  The reporter stated that the patient did not have the vaccination card information. The patient just got married and thinks that she was not pregnant but still was not sure. The information of lot and exact date of shots were not sure. Post the second dose the patient had same symptoms as that of first shot and also had chest pain. All symptoms went away after 24 hours.  Company Comment:This is a spontaneous case concerning a 30-year-old female patient with the concurrent condition of "A lot of allergies", who experienced the serious unexpected event of Loss of consciousness and non-serious event of Chest pain with the expected events of Myalgia, Pyrexia, and Headache. The patient received the second dose of mRNA-1273 (Moderna COVID-19 Vaccine) but no specific date was given. All events occurred within the same month, but again, no specific date was given. The benefit-risk relationship of mRNA-1273 Vaccine is not affected by this report.   This case was linked to MOD-2021-422827, MOD-2021-422855 (Patient Link).; Sender's Comments: This is a spontaneous case concerning a 30-year-old female patient with the concurrent condition of "A lot of allergies", who experienced the serious unexpected event of Loss of consciousness and non-serious event of Chest pain with the expected events of Myalgia, Pyrexia, and Headache. The patient received the second dose of mRNA-1273 (Moderna COVID-19 Vaccine) but no specific date was given. All events occurred within the same month, but again, no specific date was given. The benefit-risk relationship of mRNA-1273 Vaccine is not affected by this report.