Patient had a perforation in his left ear drum at the time that he received the Moderna Covid-19 vaccine; The patient also reports muscle spasms and muscle pain which started 2 weeks after the booster dose; Patient felt a shock wave or electric jolt through his right leg while he was walking through a store; The patient went home and could not bend his leg; Could not bear weight on the leg; Patient had muscle pain and could not bear weight on the leg. Gradually this pain lessened; This spontaneous case was reported by a patient and describes the occurrence of ELECTRIC SHOCK (Patient felt a shock wave or electric jolt through his right leg while he was walking through a store), LIMB DISCOMFORT (The patient went home and could not bend his leg), WEIGHT BEARING DIFFICULTY (Could not bear weight on the leg), TYMPANIC MEMBRANE PERFORATION (Patient had a perforation in his left ear drum at the time that he received the Moderna Covid-19 vaccine) and MUSCLE SPASMS (The patient also reports muscle spasms and muscle pain which started 2 weeks after the booster dose) in a 71-year-old male patient who received mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (batch no. AS7162B) for COVID-19 prophylaxis. The occurrence of additional non-serious events is detailed below.     Concomitant products included TIMOLOL MALEATE and TESTOSTERONE for an unknown indication.    On 19-Sep-2022, the patient received fourth dose of mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (unknown route) 1 dosage form. On 19-Sep-2022, the patient experienced LIMB DISCOMFORT (The patient went home and could not bend his leg), WEIGHT BEARING DIFFICULTY (Could not bear weight on the leg) and MYALGIA (Patient had muscle pain and could not bear weight on the leg. Gradually this pain lessened). On 19-Sep-2022 at 11:00 AM, the patient experienced ELECTRIC SHOCK (Patient felt a shock wave or electric jolt through his right leg while he was walking through a store). On an unknown date,  after starting mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)), the patient experienced TYMPANIC MEMBRANE PERFORATION (Patient had a perforation in his left ear drum at the time that he received the Moderna Covid-19 vaccine) and MUSCLE SPASMS (The patient also reports muscle spasms and muscle pain which started 2 weeks after the booster dose). At the time of the report, ELECTRIC SHOCK (Patient felt a shock wave or electric jolt through his right leg while he was walking through a store), LIMB DISCOMFORT (The patient went home and could not bend his leg), WEIGHT BEARING DIFFICULTY (Could not bear weight on the leg), TYMPANIC MEMBRANE PERFORATION (Patient had a perforation in his left ear drum at the time that he received the Moderna Covid-19 vaccine), MUSCLE SPASMS (The patient also reports muscle spasms and muscle pain which started 2 weeks after the booster dose) and MYALGIA (Patient had muscle pain and could not bear weight on the leg. Gradually this pain lessened) had resolved.            No Medical History information was reported.  The patient received his first Moderna COVID-19 bivalent vaccine booster dose on 19-SEP-2022.  Patient reports Adverse Reactions of at 11AM patient felt a shock wave or electric jolt through his right leg while he was walking through a store. Shock wave or electric jolt lasted for 5 seconds or less.  The patient hobbled out of the store and went home. Later that day the patient went home and could not bend his leg. Patient had muscle pain and could not bear weight on the leg. Gradually this pain lessened. The patient said that he is 100% better now at the time of report and almost has full strength back in his right leg. The patient also reported muscle spasms and muscle pain which started 2 weeks after the booster dose. That had resolved.  Treatment information was not provided.   This case was linked to MOD-2022-664799 (Patient Link).