fainted; shortness of breath/couldn't breathe/gasping for air; flu-like symptoms; arthritis; chest feels like it is on fire, severe chest pain; extreme fatigue, exhausting for me to walk; This spontaneous case was reported by a consumer and describes the occurrence of SYNCOPE (fainted), DYSPNOEA (shortness of breath/couldn't breathe/gasping for air), INFLUENZA LIKE ILLNESS (flu-like symptoms), ARTHRITIS (arthritis) and CHEST PAIN (chest feels like it is on fire, severe chest pain) in a 21-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 939906) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.    On 15-Oct-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. In October 2021, the patient experienced ARTHRITIS (arthritis), CHEST PAIN (chest feels like it is on fire, severe chest pain) and FATIGUE (extreme fatigue, exhausting for me to walk). On 16-Oct-2021, the patient experienced INFLUENZA LIKE ILLNESS (flu-like symptoms). On 14-Nov-2021, the patient experienced SYNCOPE (fainted) and DYSPNOEA (shortness of breath/couldn't breathe/gasping for air). At the time of the report, SYNCOPE (fainted), DYSPNOEA (shortness of breath/couldn't breathe/gasping for air), INFLUENZA LIKE ILLNESS (flu-like symptoms), ARTHRITIS (arthritis), CHEST PAIN (chest feels like it is on fire, severe chest pain) and FATIGUE (extreme fatigue, exhausting for me to walk) outcome was unknown.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.       Patient went to the ER after she fainted, she was not diagnosed with anything and the doctors did not prescribe any medication. Her 2nd Dose is scheduled for the 12th of November.  Concomitant medication was not provided.  Company comment: This case concerns a 21 year old female with no reported medical history, who experienced Non-serious unexpected event of Influenza like illness which occurred within 24 hours after vaccination with the 1st of vaccination with mRNA-1273 vaccine ( Moderna Covid 19 vaccine ) . Other non-serious unexpected events of chest pain , arthritis and fatigue occurred on an unknown time after vaccination with the 1st dose. Non-serious , unexpected events of Syncope and Dyspnea occurred 1 month after vaccination with the 1st dose, these events lead to ER visit of the patient and finidngs were non-significant, no internvention was done  and patient was sent home. The re-challenge for this case is not applicable since the outcome of the events is unkown. The benefit -risk relationship of mRNA -1273 ( Moderna Covid 19 Vaccine) is not affected by this report.; Sender's Comments: This case concerns a 21 year old female with no reported medical history, who experienced Non-serious unexpected event of Influenza like illness which occurred within 24 hours after vaccination with the 1st of vaccination with mRNA-1273 vaccine ( Moderna Covid 19 vaccine ) . Other non-serious unexpected events of chest pain , arthritis and fatigue occurred on an unknown time after vaccination with the 1st dose. Non-serious , unexpected events of Syncope and Dyspnea occurred 1 month after vaccination with the 1st dose, these events lead to ER visit of the patient and finidngs were non-significant, no internvention was done  and patient was sent home. The re-challenge for this case is not applicable since the outcome of the events is unkown. The benefit -risk relationship of mRNA -1273 ( Moderna Covid 19 Vaccine) is not affected by this report.