The example of a middle-aged woman who developed seropositive rheumatoid arthritis (RA) with an elevated CRP and erythrocyte sedimentation rate (ESR) 2 weeks post-hospital discharge after a COVID-19 infection, with previously negative tests for rheumatoid factor (RF) and anticyclic-citrullinated protein (anti-CCP), suggested COVID-19 infection as a trigger for autoimmunity [40]. Here, CRP is linked to rheumatoid arthritis.