Last week the Center for Disease Control and Prevention (CDC) approved the use of mix-and-match COVID-19 boosters for Americans at high risk of severe illness or infection. Any of the three authorized vaccines in the United States, Pfizer-BioNTech, Moderna-NIAID, or Johnson & Johnson may be used as a booster, regardless of which vaccine people received […]
What is Systemic Scleroderma? Systemic scleroderma (SSc) is a rare autoimmune disease, which mainly influences middle-aged patients, its morbidity rate varies in different countries at 100-300/1,000,000. With the main characteristics of vascular endothelial impairment and diffuse fibrosis, SSc mainly affects the skin and lung tissues, as well as the function of the heart and digestive […]