Cytomegalovirus Immune Responses and Cognitive Impairment in People With Human Immunodeficiency Virus.

People with human immunodeficiency virus (HIV) have an earlier occurrence of aging complications, including cognitive impairment (CI). Chronic immune activation from cytomegalovirus (CMV) may contribute to increased inflammation and CI. We explored this association using several measures of CMV immune response among people with HIV (PWH). In a case-control design, we compared CMV immunoglobulin G (IgG), enzyme-linked immunospot (ELISpot), and flow cytometry between cases (subsequent CI) and controls (no CI). Baseline CMV IgG, CMV ELISpot, or flow measures were not associated with subsequent CI. This exploratory analysis supports larger studies using more nuanced immunophenotyping to clarify relationship between CMV and development of CI in PWH.