Had a stroke the day after the second Moderna shot/Couldn't speak hardly at all for 6 months. Has trouble speaking and thinking/ Next morning couldn't talk because having a bunch of mini strokes; allergic reaction to second shot/hives; This spontaneous case was reported by a consumer and describes the occurrence of CEREBROVASCULAR ACCIDENT (Had a stroke the day after the second Moderna shot/Couldn't speak hardly at all for 6 months. Has trouble speaking and thinking/ Next morning couldn't talk because having a bunch of mini strokes) in a male patient of an unknown age who received mRNA-1273 (Spikevax) (batch nos. ASKU and ASKU) for COVID-19 prophylaxis. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.   In March 2021, the patient received first dose of mRNA-1273 (Spikevax) (unknown route) 1 dosage form. In April 2021, received second dose of mRNA-1273 (Spikevax) (unknown route) dosage was changed to 1 dosage form. In 2021, the patient experienced CEREBROVASCULAR ACCIDENT (Had a stroke the day after the second Moderna shot/Couldn't speak hardly at all for 6 months. Has trouble speaking and thinking/ Next morning couldn't talk because having a bunch of mini strokes) (seriousness criteria hospitalization and medically significant) and URTICARIA (allergic reaction to second shot/hives). At the time of the report, CEREBROVASCULAR ACCIDENT (Had a stroke the day after the second Moderna shot/Couldn't speak hardly at all for 6 months. Has trouble speaking and thinking/ Next morning couldn't talk because having a bunch of mini strokes) and URTICARIA (allergic reaction to second shot/hives) was resolving.        For mRNA-1273 (Spikevax) (Unknown), the reporter did not provide any causality assessments.   Concomitant medication and treatment medication were not reported.  Patient had an allergic reaction to the second shot and a stroke the day after the second Moderna shot. He couldn't remember anyone's name. Next morning couldn't talk because having a bunch of mini strokes. He was in the hospital for 4-5 days. Couldn't speak for that period of time. He had hives about 1 week later. Couldn't speak hardly at all for 6 months. His speech slowly improved. Still scribbles his name. Has trouble speaking and thinking, and that sort of stuff. He stated, it almost killed him. He doesn't think very well anymore. Received doses in March and April of 2021. His symptoms have continued to bother him for 2.5 years. Declined contact information.  Company comment- This is a regulatory authority case concerning a male patient of unknown age with no medical history reported who experienced the unexpected and serious (hospitalization and medically significant) AESI cerebrovascular accident. Two doses of mRNA-1273 vaccine were administered on unknown exact days.  Temporal association cannot be assessed due to lack of information on onset date of the event and vaccination dates. It was reported patient had a stroke the day after the second Moderna shot. He couldn't remember anyone's name. Next morning couldn't talk because he was having a bunch of mini strokes. He was in the hospital for 4-5 days. Couldn't speak for that period. The patient also had an allergic reaction to the second shot with hives about 1 week later. Couldn't speak hardly at all for 6 months. His speech slowly improved. He still scribbles his name, has trouble speaking and thinking and that sort of stuff. His symptoms have continued to bother him for 2.5 years. The benefit-risk relationship of mRNA-1273 vaccine is not affected by this report.