Monoarthritis induced by the Oxford-AstraZenecaR SARS-CoV-2 vaccine.

We describe the case of a 25-year-old woman who presented with monoarthritis of the proximal interphalangeal articulation of the fourth left finger 4 days after receiving the second dose of the Oxford-AstraZenecaR SARS-CoV-2 vaccine. She had no abnormalities in her X-ray or blood exams, but she had a cousin diagnosed with juvenile rheumatoid arthritis. The patient had an excellent response to anti-inflammatory medication, the arthritis was transient and left no sequelae. Studies have shown some vaccines may be associated with acute arthritis, in particular the measles-mumps-rubella vaccine. Young women such as our patient seem to be more susceptible to post-vaccination arthritis. Most of the cases reported were transient and left no articular sequelae, thus we did not contraindicate further doses of the Oxford-AstraZenecaR SARS-CoV-2 vaccine (should they be recommended in the future) in this case.