Do you have one of the following autoimmune diseases: Rheumatoid arthritis, scleroderma, myositis, or Sjogren’s syndrome? Are you planning on receiving a COVID-19 vaccine? You may be able to participate in a study to determine the effect of the vaccine on your autoimmune disease. This study involves 9 visits over 4 months. Four of the visits will take place in-person and 5 visits by phone.