%0 Journal Article %A Shreena Umit Patel %A Ruhaid Khurram %A Anjali Lakhani %A Bernadine Quirk %T Guillain-Barre syndrome following the first dose of the chimpanzee adenovirus-vectored COVID-19 vaccine, ChAdOx1 %D 2021 %R 10.1136/bcr-2021-242956 %J BMJ Case Reports %P e242956 %V 14 %N 4 %X Prevention strategies for COVID-19 transmission are at the forefront of healthcare paradigms worldwide, the main emphasis of which is vaccination. We present an interesting case of a 37-year-old man who, 3 weeks following his first dose of the chimpanzee adenovirus-vectored COVID-19 vaccine, ChAdOx1, presented to hospital with a rapidly progressive ascending muscle weakness and back pain in the absence of any other triggers. He also had a negative COVID-19 swab during admission. A diagnosis of Guillain-Barre syndrome was confirmed by correlating the clinical features with cerebrospinal fluid analysis, nerve conduction studies and MRI of the brain and whole spine. The patient received treatment with 5 days of intravenous immunoglobulin and did not require any respiratory support. He was also regularly reviewed by a multidisciplinary team consisting of neurologists, speech and language therapists, and physiotherapists and is on the course to a recovery. %U https://casereports.bmj.com/content/bmjcr/14/4/e242956.full.pdf