Lost consciousness 20 minutes after booster shot; Feels Dizzy 20 minutes after booster shot; Tunnel vision 20 minutes after booster shot/Purple and black vision 20 minutes after booster shot; Felt confused after booster shot; Woke up in her own vomit 20 minutes after booster shot; Left Arm injection site hurts 20 minutes after booster shot; This spontaneous case was reported by a consumer and describes the occurrence of LOSS OF CONSCIOUSNESS (Lost consciousness 20 minutes after booster shot) in a 28-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 033K21-2A, 041B21A and 023C21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.   On 15-Apr-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 14-May-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On 07-Mar-2022 at 3:30 PM, received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On 07-Mar-2022, the patient experienced LOSS OF CONSCIOUSNESS (Lost consciousness 20 minutes after booster shot) (seriousness criterion medically significant), DIZZINESS (Feels Dizzy 20 minutes after booster shot), VISUAL IMPAIRMENT (Tunnel vision 20 minutes after booster shot/Purple and black vision 20 minutes after booster shot), CONFUSIONAL STATE (Felt confused after booster shot), VOMITING (Woke up in her own vomit 20 minutes after booster shot) and VACCINATION SITE PAIN (Left Arm injection site hurts 20 minutes after booster shot). At the time of the report, LOSS OF CONSCIOUSNESS (Lost consciousness 20 minutes after booster shot), DIZZINESS (Feels Dizzy 20 minutes after booster shot), VISUAL IMPAIRMENT (Tunnel vision 20 minutes after booster shot/Purple and black vision 20 minutes after booster shot), CONFUSIONAL STATE (Felt confused after booster shot), VOMITING (Woke up in her own vomit 20 minutes after booster shot) and VACCINATION SITE PAIN (Left Arm injection site hurts 20 minutes after booster shot) outcome was unknown.            After Booster dose she complained that the pharmacist and the staff did not watch her for 15 minutes. They asked her to leave immediately after vaccination. She wanted to ask a question from the pharmacist but she was told that the pharmacist was not available. Right after vaccination, she felt confused.  20 minutes after vaccination, when she arrived home via a ride, she felt confused. When she tried to find the key hole in the door, she had tunnel vision (purple and black vision). As soon as she opened the door, she lost consciousness. She does not know for how long she was unconscious but she woke up in her own vomit. She still feels Dizzy, and her Left Arm injection site hurts.  No concomitant medication information was reported No treatment medication information was reported  Company Comment: This spontaneous case concerns a 28-year-old, female patient with no reported medical history, who experienced the unexpected, serious (medically significant) event of Loss of consciousness. The event occurred 20 minutes after booster dose of mRNA-1273 vaccine with the non-serious events of Dizziness, Visual impairment, Confusion and Vomting. The non-serious event of Vaccination site pain was also reported. The patient left the vaccination site immediately after getting the dose without adequate observation period. At home, she suddenly felt confused and noted dimming vision. Afterwards, she lost consciousness for an unspecified duration and unknowingly vomited. It was not reported if there was any medical intervention administered. At the time of reporting, the outcome was unknown. The events experienced were not reported during the first 2 doses of the mRNA-1273 vaccine.  The benefit-risk relationship of mRNA-1273 is not affected by this report.   This case was linked to MOD-2022-504251, MOD-2022-504266 (Patient Link).; Sender's Comments: This spontaneous case concerns a 28-year-old, female patient with no reported medical history, who experienced the unexpected, serious (medically significant) event of Loss of consciousness. The event occurred 20 minutes after booster dose of mRNA-1273 vaccine with the non-serious events of Dizziness, Visual impairment, Confusion and Vomting. The non-serious event of Vaccination site pain was also reported. The patient left the vaccination site immediately after getting the dose without adequate observation period. At home, she suddenly felt confused and noted dimming vision. Afterwards, she lost consciousness for an unspecified duration and unknowingly vomited. It was not reported if there was any medical intervention administered. At the time of reporting, the outcome was unknown. The events experienced were not reported during the first 2 doses of the mRNA-1273 vaccine.  The benefit-risk relationship of mRNA-1273 is not affected by this report.