<qa>  What is a medication used to treat inflammation in people with rheumatoiPeople with HIV infection who are taking antiretroviral therapy ART may be at risk for cardiovascular disease CVD, which can be caused by inflammation. Methotrexate MTX is a medication used to treat inflammation in people with rheumatoid arthritis. This study will evaluate the safety and effectiveness of low-dose methotrexate LDMTX at reducing inflammation in HIV-infected adults. 