This study reviewed reports of ankylosing spondylitis (AS) following vaccination by searching Scielo, PubMed, and Web of Science (1966–April 2024). Only two articles were found, encompassing 3,862,339 participants and 910 post-vaccination AS cases (793 after COVID-19 vaccines and 117 after other vaccines, including 22 following influenza vaccination). The mean age was 45.7 ± 18.7 years, and symptom onset occurred 2 (1–7) days post-vaccination. Preliminary evidence suggests vaccineinduced AS, warranting standardized prospective research.


