can't walk; feeling very bad/brain is not working correctly/ head is wrong/feeling like a zombie; He vomit everything he eats, he cannot eat, he vomit even water/he have been throwing up; very dizzy, cannot walk because dizzy and vomit/woke up dizzy; pressure was down; short of breath; stomach was tight near the heart; he don't have appetite; This spontaneous case was reported by a consumer (subsequently medically confirmed) and describes the occurrence of GAIT DISTURBANCE (can't walk) and FEELING ABNORMAL (feeling very bad/brain is not working correctly/ head is wrong/feeling like a zombie) in a 72-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. unknown) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.    On 31-May-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 04-Jun-2021, the patient experienced GAIT DISTURBANCE (can't walk) (seriousness criterion hospitalization), FEELING ABNORMAL (feeling very bad/brain is not working correctly/ head is wrong/feeling like a zombie) (seriousness criterion hospitalization) and DECREASED APPETITE (he don't have appetite). On 07-Jun-2021, the patient experienced DIZZINESS (very dizzy, cannot walk because dizzy and vomit/woke up dizzy), HYPOTENSION (pressure was down), DYSPNOEA (short of breath) and ABDOMINAL DISCOMFORT (stomach was tight near the heart). On an unknown date, the patient experienced VOMITING (He vomit everything he eats, he cannot eat, he vomit even water/he have been throwing up). At the time of the report, GAIT DISTURBANCE (can't walk), FEELING ABNORMAL (feeling very bad/brain is not working correctly/ head is wrong/feeling like a zombie), DIZZINESS (very dizzy, cannot walk because dizzy and vomit/woke up dizzy), HYPOTENSION (pressure was down), DYSPNOEA (short of breath), ABDOMINAL DISCOMFORT (stomach was tight near the heart), DECREASED APPETITE (he don't have appetite) and VOMITING (He vomit everything he eats, he cannot eat, he vomit even water/he have been throwing up) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Blood pressure measurement: blood pressure (Inconclusive) 170-71. On an unknown date, Body temperature: 98.4 (Inconclusive) 98.4 F°. On an unknown date, Oxygen saturation: 99 % (Inconclusive) Oxygen saturation. On an unknown date, Pulse abnormal: 60 (Inconclusive) Pulse. On an unknown date, Respiratory rate: 18 (Low) decreased.     The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.       No concomitant medication was reported.  No treatment medication was reported.  Company Comment  Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.   Most recent FOLLOW-UP information incorporated above includes: On 08-Jun-2021: Lab data were updated. Product and event tab were updated. On 08-Jun-2021: Seriousness criteria hospitalization was added.; Sender's Comments: Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.