DC in systemic and CNS reactivations and partial flares. The level of DC is depicted, if available, as CD3⁺ DC, or otherwise as overall DC. Left: Lowest DC level of each patient (CD3⁺, ▲; overall, ●). Middle and right: Patients with systemic (CD3⁺, ▲; overall, ●), isolated CNS reactivations (CD3⁺, △; overall, ○), and partial flares (CD3⁺, ▲; overall, ●) at the time of the event. Events in the middle column occurred during profound post-HSCT immune suppression before day 180; events in the right column occurred after that day. Refer to the “Results” section for case descriptions of events that occurred at a DC >25%. Patient identifications are indicated in the figure.