Su Jeong Shin, You Ho Mun and Jung Ho Kim
In late December 2020, vaccination for the coronavirus disease 2019 (COVID-19) started among the personnel of the United States Forces Korea and related units, including the medical team. Because its usage was approved based on emergency circumstances, sufficient research on the possible side effects has not been conducted yet. We experienced an unusual neurologic side effect after injection of the SARS-CoV-2 mRNA-1273 vaccine. A 32-year-old U.S Army male soldier with headache, blurred vision, and cramping chest pain after second-dose injection visited the emergency room. Subsequently, left-sided weakness developed during the observation. Imaging of the cervical lesion for the diagnosis of acute intracranial disease was performed but revealed no definite disease. While under close observation, the patient’s symptoms progressed to nearly hemiplegic but then improved gradually in an ascending and peripheral-to-center manner with only supportive care. We report this case as the first unilateral neurologic side effect of the SARS-CoV-2 mRNA-1273 vaccine.
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