Ankylosing spondylitis (AS) is a systemic, chronic, and inflammatory autoimmune disease associated with the disorder of intestinal microbiota. The intestinal microbiota composition plays an important
VL, viral load; HBV, hepatitis B virus; AIDS, acquired immunodeficiency syndrome; HAART, highly active antiretroviral therapy. Values are number (%) or median (Interquartile Range). Positive HBV vacci