Experts are sharing insights on multiple sclerosis at the ACTRIMS 2026 event, including the potential role of Epstein-Barr virus (EBV) in the disease. However, some research suggests that EBV may not precede every case of multiple sclerosis, with some cases being EBV-negative, which could impact understanding of the disease's pathogenesis. Other topics being discussed at the event include gut health, pediatric multiple sclerosis, and factors that may influence disease progression.