Search strategy and literature review
As of June 2023, We did a systematic literature review using a combination of the MeSH search keywords ”COVID-19” or ”Coronavirus disease 2019” with ”Granulomatosis with polyangiitis” or ”GPA” or ”ANCA associated vasculitis” in the database (PubMed,Wanfang Data,CNKI). Three writers (RJ, ZJZ, and HBZ) independently evaluated the titles and complete texts of all pertinent papers. The three authors analyzed the search results and agreed on which articles to include. The authors collected data on age, gender, clinical symptoms, laboratory and imaging findings, diagnosis and therapy, and prognosis of GPA after COVID-19 infection from each article.