Hallucinating 14 hours after 2nd booster/Called during the night thinking was in a Movie 14 hours after 2nd booster/Thought there were people in her house 14 hours after 2nd booster; Still in bed all morning day after 2nd booster, Feeling Weak day after 2nd booster/Extremely Weak day after 2nd booster; Trouble walking day after 2nd booster; Dizzy day after 2nd booster; Fever (102 F) eight hours after 2nd booster; Fatigue eight hours after 2nd booster; This case was received via an unknown source (no reference has been entered for a health authority or license partner) on 04-May-2022 and was forwarded to Moderna on 04-May-2022.    This spontaneous case was reported by a consumer and describes the occurrence of HALLUCINATION (Hallucinating 14 hours after 2nd booster/Called during the night thinking was in a Movie 14 hours after 2nd booster/Thought there were people in her house 14 hours after 2nd booster) in a 58-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.     Previously administered products included for COVID-19 vaccination: Pfizer COVID-19 vaccine (Primary dose 1), Pfizer COVID-19 vaccine (First Booster dose, last Pfizer vaccine was 6 months ago) and Pfizer COVID-19 vaccine (Primary dose 2). Past adverse reactions to the above products included No adverse event with Pfizer COVID-19 vaccine, Pfizer COVID-19 vaccine and Pfizer COVID-19 vaccine.    On 03-May-2022, the patient received fourth dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 03-May-2022, the patient experienced PYREXIA (Fever (102 F) eight hours after 2nd booster) and FATIGUE (Fatigue eight hours after 2nd booster). On 04-May-2022, the patient experienced HALLUCINATION (Hallucinating 14 hours after 2nd booster/Called during the night thinking was in a Movie 14 hours after 2nd booster/Thought there were people in her house 14 hours after 2nd booster) (seriousness criterion medically significant), ASTHENIA (Still in bed all morning day after 2nd booster, Feeling Weak day after 2nd booster/Extremely Weak day after 2nd booster), GAIT DISTURBANCE (Trouble walking day after 2nd booster) and DIZZINESS (Dizzy day after 2nd booster). On 04-May-2022, HALLUCINATION (Hallucinating 14 hours after 2nd booster/Called during the night thinking was in a Movie 14 hours after 2nd booster/Thought there were people in her house 14 hours after 2nd booster) had resolved. At the time of the report, ASTHENIA (Still in bed all morning day after 2nd booster, Feeling Weak day after 2nd booster/Extremely Weak day after 2nd booster), GAIT DISTURBANCE (Trouble walking day after 2nd booster), DIZZINESS (Dizzy day after 2nd booster), PYREXIA (Fever (102 F) eight hours after 2nd booster) and FATIGUE (Fatigue eight hours after 2nd booster) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 03-May-2022, Body temperature: 102 (High) 102 F.         No Concomitant medications were reported. Patient took the last Pfizer vaccine 6 months ago. Patient had 2nd Booster dose of Moderna COVID-19 vaccine on 03MAY2022 around 12 noon. Eight hours after the 2nd booster she had a fever (102 F), and she was in fatigue. In the middle of the night patient was thinking that she was in a movie, and there were people in her house. She was hallucinating at about 2AM on 04MAY2022. In the morning she was still in bed, feeling weak. She took some OTC Medications. In the afternoon she was extremely weak, dizzy, and she had trouble walking.