Tianjin Medical Journal ›› 2024, Vol. 52 ›› Issue (7): 683-686.doi: 10.11958/20231791

• Monograph·Connective Tissue Diseases-Interstitial Lung Disease/Pulmo-nary Arterial Hypertension • Previous Articles     Next Articles

Study on the protective effect of vaccine in patients with microscopic polyangiitis-interstitial lung disease complicated with COVID-19 infection

QI Fumin(), SU Rui, HAO Jian, SU Li, FAN Qian, LI Xin, WEI Wei()   

  1. Department of Rheumatology and Immunology, Tianjin Medical University General Hospital, Tianjin 300052, China
  • Received:2023-11-19 Revised:2024-01-09 Published:2024-07-15 Online:2024-07-11
  • Contact: E-mail: tjweiwei2003@163.com

Abstract:

Objective To analyze the clinical features of microscopic polyangiitis (MPA)-associated interstitial lung disease (ILD) patients infected with coronavirus disease-2019 (COVID-19),and investigate the protective effect of SARS-CoV-2 vaccine. Methods Patients with MPA-ILD in the General Hospital of Tianjin Medical University were included, and patients also met the diagnostic criteria for COVID-19 in accordance with the COVID-19's diagnosis and treatment plan (10th Edition). All of patients had positive evidence of coronavirus antigens or positive nucleic acid tests. Clinical data of patients, ILD imaging typing, COVID-19 vaccination, clinical typing and prognostic results were collected and analyzed. Results Thirty-seven patients with MPA-ILD were included, including 14 females and 23 males. Thirty-two patients with MPA were in remission at the time of infection with COVID-19, and 31 were maintained on concurrent immunosuppressive/biologic therapy. The original imaging type of MPA-ILD was predominantly usual interstitial pneumonia (UIP, 15 cases) and nonspecific interstitial pneumonia (NSIP, 14 cases). The typing of the remaining 8 cases was inconclusive. Of the COVID-19 subtypes, 27 patients were mild infection, and 5 dead due to COVID-19. Eleven patients were unvaccinated, and 26 received inactivated vaccine. Among them, 11 completed 3-dose of booster immunization. The proportion of patients with mild COVID-19 was significantly higher in MPA-ILD patients with vaccinated patient group than that in the unvaccinated patient group (P=0.038). Multifactorial analysis showed that vaccines were an independent protective factor for MPA-ILD patients with COVID-19 infection (OR=0.045, 95%CI: 0.004-0.472, P=0.010) and non-mild infection (OR=0.049, 95%CI: 0.005-0.517, P=0.012). Moreover, MPA in remission was a protective factor for COVID-19 non-mild infections (OR=0.021, 95%CI: 0.001-0.459, P=0.014). Conclusion Vaccination and MPA in remission may reduce the severity of COVID-19 infection in patients with MPA.

Key words: microscopic polyangiitis, COVID-19, COVID-19 vaccines

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