EXCELLENT PROGNOSIS of RHEUMATIC MANIFESTATIONS FOLLOWING COVID-19 VACCINATION: 7 MONTHS FOLLOW-UP DATA

Background: It is well established that severe forms of SARS-CoV2 infection can induce a massive cytokine storm, which may disrupt the immune system stability and conceivably stimulate the development of reactive manifestations through a molecular mimicry process. Likewise, anti-COVID-19 vaccines, which have so far proved an excellent tolerability and safety profile, are able boost the immune response via different biologic technologies and adjuvant combinations possibly facilitating, in predisposed subjects, the onset of infammatory or even autoimmune manifestations. Objectives: We report a case series of suspected rheumatic adverse events following immunization (AEFI) associated with anti-COVID-19 vaccine. We focused our attention on the prognosis of these patients by analysing their available follow-up data. Methods: We included patients evaluated at frst-aid rheumatologic consultancy and at rheumatologic outpatient and inpatient clinic at Padua University Hospital between May and September 2021 presenting with new-onset rheumatic manifestation or a fare of an underlying rheumatic disease within 30 days after receiving an anti-COVID-19 vaccine dose. Inclusion and exclusion criteria were in accordance with the World Health Organization guidelines for AEFI surveillance. All patients were re-evaluated in January 2022: telemedicine or face-to-face visit. Response to therapy was classifed as complete, good or absent according to the clinician's judgment based on clinical examination, patient's reporting and analysis of laboratory data. Results: We identifed 30 cases of suspected rheumatic AEFI reported in Table 1. Comprehensively the most common manifestations were infammatory arthritis (40.0%), rheumatic polymyalgia (26.7%) and adult-onset Still disease (13.3%). Among patients with an underlying rheumatic disease we recorded an AOSD fare, a rheumatoid arthritis fare with involvement of hands proximal inter-phalangeal joints, one case of wrist arthritis in a patient with psoriatic arthritis, one of aortitis in a patient with large vessels vasculitis, one case of polyarthritis in undifferentiated connective tissue disease and a nephritis fare in a patient with systemic lupus erythematosus. Treatment for the suspected AEFI was based on systemic glucocorticoids (GC) alone (63.3%), systemic GC plus IL-1R antagonists (13.3%), non-steroidal autoinfammatory drugs (13.3%), intra-articular GC (6.6%), colchicine (3.3%) and non-steroidal anti-infammatory drugs (13.3%). At last follow-up contact (7.8±1.5 months) 26 patients (89.6%) were classified as complete responders. Eleven of them (42.3%) withdrew therapy without experiencing recurrence of disease manifestation. One patient with lupus nephritis had a proteinuric flare after the first BNT162b dose;he showed an initial good response to increased glucocorticoid therapy but had a new 24h proteinuria increase at second follow-up visit three months later requiring implementation of immunosuppressive therapy. Another patient with AOSD was in remission at last FU visit in December 2021 but required hospitalization in January 2022 for disease relapse due to a suspected gastrointestinal infection. Finally, one patient hospitalized for a seronegative polyarthritis after the first BNT162b dose achieved complete remission at last available contact (one month after hospital discharge) but was then lost in follow-up. Conclusion: After a mean follow-up of 7.8±1.5 months nearly all of patients showed a complete/good response to standard therapy and about half of them withdrew the treatment without losing the remission status.

Post-COVID-19 arthritis: a case report and literature review.

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) is the novel pathogen responsible for the coronavirus disease 19 (COVID-19) outbreak. Researchers and clinicians are exploring the pathogenetic mechanisms of the viral-induced damage and growing interest is focusing on the short-term and long-term immune-mediated consequences triggered by the infection. We will focus on post-SARS-CoV2 infection arthritis which may arise as a new pathological condition associated with COVID-19. In this article, we describe a case of acute oligoarthritis occurring 13 days after a SARS-CoV2 severe pneumonia in a middle-aged Caucasian man and we go over a brief review of the current available literature. We hypothesize that molecular mimicry might be the basic immunological mechanism responsible for the onset of COVID-19-related arthritis based on the current knowledge of SARS-CoV2 and on the known pathogenetic mechanism of viral-induced arthritis.

SARS-CoV-2 infection in patients with autoimmune rheumatic diseases in northeast Italy: A cross-sectional study on 916 patients.

BACKGROUND: Whether patients with autoimmune rheumatic diseases (ARD) have a higher risk for SARS-CoV-2 infection (COVID-19) and how SARS-CoV-2 pandemic impacts on adherence to therapy has not been fully elucidated. We assessed the rate and clinical presentation of COVID-19, and adherence to therapy in a large cohort of patients with ARD followed-up in a tertiary University-Hospital in Northeast Italy. METHODS: Between April 9th and April 25th, 2020, after SARS-CoV-2 infection peak, a telephone survey investigating the impact of COVID-19 on patients with systemic lupus erythematosus (SLE), systemic sclerosis (SSc), rheumatoid arthritis (RA), ANCA-associated vasculitis (AAV), and idiopathic inflammatory myopathies (IIM) was administered. Demographics, disease activity status, therapy, occupational exposure, and adherence to social distancing advise were also collected. RESULTS: 916 patients (397 SLE, 182 AAV, 176 SSc, 111 RA, 50 IIM) completed the survey. 148 patients developed at least one symptom compatible with COVID-19 (cough 96, sore throat 64, fever 64, arthromyalgias 59, diarrhea 26, conjunctivitis 18, ageusia/hyposmia, 18). Among the 916 patients, 65 (7.1%) underwent SARS-CoV-2 nasopharyngeal swab (18 symptomatic and 47 asymptomatic), 2 (0.21%) tested positive, a proportion similar to that observed in the general population of the Veneto region. No deaths occurred. 31 patients (3.4%) withdrew ≥1 medication, mainly immunosuppressants or biologics. Adoption of social distancing was observed by 860 patients (93.9%), including 335 (36.6%) who adopted it before official lockdown. CONCLUSIONS: COVID-19 incidence seems to be similar in our cohort compared to the general population. Adherence to therapy and to social distancing advise was high.